Several instances a disastrous and even fatal effects to valuable pearorchards from being attacked by the Psylla have come under my observation, as well as entirely satisfactory results from treating the trees.

The life-history and habits of injurious insects must be accurately determined before we can know just how to deal with them. A knowledge of the habits of such insects will also often enable the farmer to so manage his land crops that the insects are placed under unfavourable and even destructive conditions.

The good work on the Hymenopterous fauna of the Philippine Islands, begun by Father W. A. Stanton, S.J., is being contiuned by Father Robert E. Brown, S.J. and I have now the pleasure of describing below two new genera and twelve new species captured by him in the Observatory Garden at Manila.

The only apology for publishing the following descriptions at this time, is that the names have been made use of in identifying speciments for Messers. Saunders, Winn and Yound, and that “MMS” species are the bete noire of entomology—effecutally locking up a species indefinitely, and prohibiting any one form referring to it in any way, no matter how common it may be or how interesting a life-history someone else may have worked out.

The peculiar facility of the older entomologists, the fathers of the Sciences, for discarding each other's generic and specific names has in this instance, as in many others, given rise to be complicated synonymy, of which I give above that covering this extremely interesting little waterstrider. It is given more in detail in The Entomologist (London Eng.) for June, 1900, on Page 176, in which Kirkaldy elucidates it, relegating Say's specific name to synonymy, as it unfortunatley has been preoccuupied by Eschscholtz, who in 1822 described Hydrometra lineata from Manila, Philippine Islands. In the paper mentioned hereafter, Mr. J.O. Martin discusses the generic synonymy.

Aristotelia Youngella, sp. nov.—Head. antennæ, palpi, thorax abdomen and legs shining iridescent green. Basal half of front wing and outer half along costa black or very dark brown, heavily overlaid with iridescent green. The dark basal half is outwardly margined by the black ground colour, owing to absence of the iridescent scales at this point. All the outer half of wing, except the dark costal streak, is dull ochreous, inwardly margined by a pale yellow line, the latter adjoining the dark line of ground colour outlining the basal half.

Proteoteras Moffatiana. n. sp.—Expanse of wings, 14—20 mm. Head, thorax and fore wings emerald green, varying considerably in the different specimens, some being much brighter than others. The fore wings are marked with black and much brighter than others. The fore wings are marked with blacks, and may parts have silvery reflections in certain lights. On the basal fourth of the costa there is a small quadrate black spot, below which the basal part of the wing is more or less marked with streaks or irrorations of black.

150. Hadena (Xylophasia) remissa, Hbn.—Nine ♂ ♂ at light in 1903, and a few both sexes at light and treacle during 1904. Not previously met with. July 15th to Aug. 2nd. Prof. Smith says they are “somewhat paler in ground colour than New England examples.” In a general way the species resembles a pale ferens, with which species Mr. Hudson and I at first confused it whilst collecting.

Having planned a trip to Europe for the early part of last spring, I was anxious to utlize the opportunity to compare some specimens with types in the British Museum, but as I was sailing to the Mediterranean and going tospend most of my time in Italy, it was impossible to take more than a very few specimens, as I had to carry them everywhere, and did not dare to intrust the box to anyone else to carry for me. I there for restirced myself to cigar-box full, chiefly Gortynas, two of them Appassionata and Harrssii, kindly lent me by Mr. Bird, and the rest from my own collection.