49 



the head, which may be almost entirely drawn into the ring. 

 The next 'larger ones were pale, yellowish-green; hairs relatively 

 longer, smooth; dorsal line white, not distinct, but uninterrupted. 

 The largest were of the same hue but deeper; in many the eighth 

 and ninth rings were yellow; dorsal line white, more decided, 

 interrupted, i.e., made up of dashes and rings as stated below for 

 the adult larvae. The subsequent changes were mainly those of 

 size, deepening of color and a less woolly appearance. I was unable 

 to discover any differences by which I could, with certainty, sepa- 

 rate those of monodactylus from those of cretidactylus until the third 

 (?) moult, when those of the latter have somewhat darker colors 

 than those of the former. 



Full grown examples of each are described as follows: Homo- 

 dactyhis; length .55 of an inch; pale yellowish-green; dorsal line 

 sharply defined, white; subdorsal and stigmatal lines similar; the 

 top of each ring from the second to the tenth bears a minute circle 

 of white interrupting the dorsal line. The dorsal spaces of each 

 ring from the fourth to eleventh bear a pair of tubercles on either 

 side of the middle line, from these proceed rather long, stiff, hoary, 

 smooth hairs; the thoracic and terminal rings have a single papilla 

 in place of the pairs. These tubercles stand in a light stripe. Be- 

 low them a single tubercle with similar appendages; below the spir- 

 acles a larger one with a minute one back of it bearing three or 

 four hairs, also one above the line of the feet. Legs and ventral sur- 

 face hairy. The anterior half of the first ring bears many hairs which 

 hang over the head somewhat. Spiracles round, rim white, back of 

 each there is a short, stiff hair. Head almost colorless, except 

 mouth organs and oceli; epicranial suture deep; cranial lobes hemis- 

 pherical, with scattered hairs. 



Cretidactylus. Length .55 of an inch; color of skin greenish, 

 striped with wine-color and white; hairs dusky, lighter later- 

 ally. Dorsal line white, interrupted with circles as in the former, 

 and bordered laterally with wine-color. That part of the dorsal 

 space in which the tubercles stand much lighter in hue; subdorsal 

 and stigmatal lines white bounded by the same shade as the dorsal. 

 Tubercles as in homodactylus. Head light green, same form as the 

 other. Spiracles ringed with brown. 



BUF. BUL. SOC. NAT. SCI. (7) JAN. 1883. 



