When Prof. E. Hindle took over the direction of the Biological Laboratory of the Egyptian Government School of Medicine, Cairo, he found there a large collection of parasitic worms, most of which had been accumulated by Prof. Looss while in charge of the Laboratory for a number of years prior to the Great War. As a large proportion of this material was unnamed, and as the named portion of it contained many specimens possibly of considerable value as original types or co-types, which had been in a neglected condition for some time, it was thought advisable to send duplicates of the collection to England, in order that part of it might be kept there in safer custody. It was also felt to be desirable that arrangements should be made for the examination and determination of the contents of the unnamed part of the collection.

The following is a continuation of the foregoing Report (Parasitology, xv, pp. 1–13). As in the first part, the numbers are those given to the original tubes at Cambridge.

As in Parts I and II of this Report (Parasitology, xv, pp. 1–23) the numbers are those given to the original tubes at Cambridge.

In January, 1921, I published in Parasitology (Vol. xn. No. 4, p. 337) a brief description of what appeared and still appears to me to be a new species of Porocephalus, and I commented upon the fact that this species exhibited “the most marked form of sexual dimorphism yet discovered in the Linguatulidae” and is therefore of some interest. Two writers have recently questioned the validity of this new species. Alcock1 suggests the possibility of my female specimen of Porocephalus pomeroyi being an individual abnormality, and Sambon2 unhesitatingly decides that its peculiar form is merely due to “constriction” and deformity, and records the species as a synonym of his “Armillifer annulatus” —the Pentastoma (Porocephalus) annulatum of Baird, 1853.

Most of the published descriptions of R. prowazeki in lice have dealt with the minute round, oval, diplococcal or dumb-bell forms found by Ricketts and Wilder (1910), Sergent, Foley and Vialatte (1914), da Rocha-Lima (1916), and others.

Among material recently sent for identification by the Molteno Institute of Parasitology were a number of small Nematode worms collected by Mr E. A. Chapin from the rectum of the North American Tortoise, Cistudo Carolina.

The parasitic worm fauna of domesticated animals in India has in the past been greatly neglected as a subject for research by zoologists working in that country. The increased interest in Helminthology during the last few years has been world-wide, and has led to greater attention being paid to Indian parasitic worms, such attention has, however, been largely devoted to the Roundworms, the Flatworms, with the exception of the Trematodes, receiving but scant attention.

The genus Diaphanocephalus was erected by Diesing in 1851 to contain certain species included in Rudolphi's Synopsis in the old genus Strongylus. The species in question were Strongylus galeatus Rud., 1819, re-named Diaphanocephalus strongyloides by Diesing, and subsequently indicated as the type-species of the genus; S. costatus; and possible S. viperae Rud., which Diesing listed as a species inquirenda. In deciding upon the necessity for the new genus Diesing seems to have been influenced largely by the characters of the head. His diagnosis shows that he considered the supporting rays of the buccal capsule to be four only in number, regarding two of these as divided each into two distinct processes. Molin (1861) gave an emended diagnosis of Diesing's genus and proposed the new genus Kalicephalus for certain other strongyle parasites in reptiles. It has already been pointed out (Baylis and Daubney) that the generic characters used by Molin are unreliable and that Railliet and Henry (1909) were justified in abolishing Kalicephalus in favour of the older genus, Diaphanocephalus. Recently, Skrjabin (1916) has given a diagnosis of the genus. Through the kindness of Dr H. A. Baylis the writer has been able to examine specimens in the collection of the British Museum (Natural History), and the Wellcome Bureau of Scientific Research. The material examined includes four specimens of the genus Diaphanocephalus.

[This paper is the final report on the Diptera collected by the Percy Sladen Trust Expedition under Professor J. Stanley Gardiner, F.R.S., in the Seychelles and other islands of the Western Indian Ocean in 1905 and 1908–9. Many reports on the insects collected have appeared in the special series of volumes devoted to that Expedition, Tr. Linn. Soc.London, ser. 2 (Zool.), xii–xviii (from 1907 onwards), but it has not been possible to include all the entomological contributions in that series. I am greatly indebted to the Editor of Parasitology for accepting the present work, which was offered for publication in this journal as it deals with a number of parasitic forms—Bombyliidae, Sarcophaginae, Tachininae, etc. A list of all the other reports on Diptera collected by this Expedition, with full references, is given in Ent. Monthly Mag., 58, 1922, p. 184.

The hosts of the new Schizogregarine herein described are the larvae of Dolichopodid flies: Syslenus adpropinquans Loew and S. scholtzii Loew which live in the decomposed sap or wood-pulp filling the wounds of Elm and Horsechestnut trees. The larvae used for the present study have been obtained from two trees only: an Elm tree standing on the Caius College playing ground at Newnham and a Horse-chestnut tree standing on the Downing site. The new parasite Schizocystis legeri n.sp., in company with a gregarine Dendrorhynchus systeni Keilin (1920), often completely fills the lumen of the host's midgut, but, even when heavily parasitised, the host does not show any sign of infection. The latter can only be detected when the larvae, slightly pressed between a slide and a coverslip, are examined under the microscope.

Alfred Giard was born at Valenciennes (Nord) on the 8th of August, 1843, and died at Orsay (Seine-et-Oise) on the 8th of August, 1908. He received his education at the “Ecole Normale Supérieure” of Paris and in 1873, having obtained his D.Sc. at the Sorbonne, he was elected to the chair of Natural History at the University of Lille. In 1874 he founded at Wimereux, near Boulogne, a marine zoological station and in 1878 became editor of the Bulletin Scientifique de la France et Belgique, which still appears and counts now fifty-five volumes.In 1882 he was elected member of Parliament but, fortunately for his scientific career, lost his seat at the next election in 1885. Three years later the Town Council of Paris endowed for him at the Sorbonne a lectureship of Evolution which soon developed into a Professorial chair of “Evolution des Ětres organises.” In 1900 he was elected a member of the Institute.