On page 365, Dr. Sharp states that the Hesperid larva “frequently forms a rudimentary cocoon.” It does not appear to be generally known that Doberes Mexicanus, Feld., a Hesperid (near Eantis) common to Central Mexico, makes a decidedly complicated cocoon. Constructed of tough gray silk, and very closely woven, the cocoou is formed between two leaves (or, rarely, two sides of one folded leaf) of the “zapote blanco” (Casimiroa sp.), and suspended from a twig by a strong silk thread 70 mm. to 90 mm. in length. The mouth is closed by an exceptionally well made chevauz-de-frise and turned at nearly right angles to the axis of the cocoon, which is 33 mm. in length, and at the middle, 13 mm. in breadth by 9 mm. in thickness.