The larvæ of two species of Arachnis, from Mexico, were given to me by Mr. Jacob Doll. They are the following:-

Arachnis aulea, Geyer.

Egg.—Shape of two-thirds of a sphere, with flat base. Shining, pearly, irirdescent. Diameter, .6 mm. The reticulations are rounded, moderately distinct, of quite uniform size, but smaller at apex. On the angles of the reticulations a series of short, stiff spines (½inch objective).