154 THE CANADIAN ENTOMOLOGIST. 



short. The female belonging to this male has lost one of its hind legs, and 

 on the other there is a single middle spur — the outer one. Among four or 

 five males only one has four spurs, one three, and two or three only apical 

 spurs. Alcides must also be distinguished by a very unusual tendency to 

 lose the middle spurs, or to vary in the number of the spurs, as does 

 Acidalia rusticata, the latter of which is the more probable. 



In Division C, only the male of Mathias has a discoidal stigma — a 

 straight oblique streak, which separates Mathias directly from all other 

 species similarly marked. The streak arises nearer the margin than 

 usual, a little behind the middle of the dorsal vein, and ends at the first 

 branch of the median. Its color is also different ; it is not coal-black, as 

 others, but whitish-grav and glossy. From the two other species of this 

 Division, Zelleri offers no particular difference ; N~ostroda?nus differs in its 

 unusually short antennae (in this agreeing with the otherwise quite unlike 

 American Phylceus Dr.), with their thicker oval club, on which is placed 

 a short conical hooklet, as a point on the thin apical joint. 



Herrich-Schaeffer places the species of the Divisions B and C in his 

 genus Go)iiloba ; but he is unable to give the difference between it and 

 Pamphila. 



Inachus has a more slender club than the other species, and is besides 

 separated from them by its spotted fringe (which induced Mene'tries to 

 refer it to the genus Pyrgus) ; it has also a peculiarly colored and marked 

 under side of the hind wings. Its place in Pamphila, with many other 

 species, can be only provisional. 



(To be Concluded in Following Number.) 



PAPILIO CRESPHONTES Cram. 



BY JACOB liOLL, DALLAS, TEXAS. 



The caterpillar of this beautiful butterfly is living here on Xanthoxylum 

 carolinianum, or Prickly Ash ; at least, till now I did not find it on any 

 other plants. It can be found three times in a year, first in April and 

 May, then in July, and again in September and October. If the cater- 



