126 Mr. G. 0. Champion's Revision of the Mexican 



sided, firm elytra, and the above-mentioned characters of 

 the male, separate Parasilis from the allied genera. The 

 terminal joint of both palpi is long, stout, and securiform 

 in each sex. The genital armature is symmetric. There 

 is an unnamed species of Parasilis from Ecuador in the 

 British Museum. 



1. Parasilis colyphoides. (Plate III, fig. 12, (^.) 



Parasilis colyphoides, Gorh., Biol. Centr.-Am., Coleopt. iii, 

 2, p. 308. 



(J. Eyes moderately large, prominent ; prothorax as long as broad, 

 narrow, deeply transversely excavate across the disc anteriorly and 

 hollowed down the middle thence to the base, arcuate in front, the 

 margins obliquely plicate and angularly notched at the middle, 

 dilated into a blunt tooth in front of this, and refiexed and slightly 

 sinuate thence to the apex, the space between the notch and the 

 base rounded, convex, and almost immarginate; tibiae somewhat 

 curved; inner claw of anterior tarsi, and outer claw of the other 

 tarsi, cleft at the tip; seventh ventral segment long, divided into 

 two lobes; last dorsal segment drawn out into a long, curved, 

 attenuate lobe on each side, the two lobes meeting at the tip and 

 extending far beyond the seventh ventral segment. 



$. Eyes smaller; prothorax a little shorter, the excavations 

 shallower, the margins somewhat rounded, feebly trisinuate, and 

 reflexed throughout; sixth ventral segment shorter, triangularly 

 emarginate in the middle at the apex. 



Hab. Panama, Volcan de Chiriqui. 



Twenty-two specimens seen, five of which are males, 

 one of the latter with an oblique pallid stripe on each 

 elytron. The appendages of the last dorsal segment of 

 the male form a pair of forceps, a somewhat similar structure 

 having been noticed by Gorham in the same sex of P. 

 vittata. The terminal segments of the abdomen and the 

 evaginated genital armature are figured on Plate VI, 

 figs. 37, 37a. 



2. Parasilis vittata. 



Parasilis vittata, Gorh., Biol. Centr.-Am., Coleopt. iii, 2, 

 p. 308. 



(J. Eyes a little larger than in 2 ; prothorax as long as broad, the 

 margins obliquely plicate and angularly notched at the middle, 



