48 Mr. G. C. Champion's Revision of the Mexican 



than D. chiriquense, the prothorax of the male with a 

 shallower lateral notch, and that of the female more 

 deeply sinuate at the sides than in the same sex of D. 

 photinoides, the antennae of the male less elongate and 

 less widened. Two males have been dissected. 



37. Discodon amplipenne, n. sp. 



Moderately elongate, broad, shining, finely pubescent; nigro- 

 piceous or black, the base of the mandibles and prothorax (a median 

 vitta excepted) flavous, the elytral humeri sometimes testaceous. 

 Eyes rather small in both sexes. Antennae moderately long, 

 tapering slightly towards the tip. Prothorax transverse, arcuate 

 in front ; angularly notched on each side at the middle and narrower 

 and parallel thence to the base in cJ, explanate and with the sides 

 feebly sinuate in $. Elytra at the base about as wide as the pro- 

 thorax, moderately long, broadly arcuato-ampliate from a little 

 below the shoulder, costulate on the disc. Iimer claw of anterior 

 tarsi broadly lobed, and outer claw of the other tarsi deepl}' cleft, 

 in cJ. 



Var. a. Prothorax entirely flavous. $. 



(J. Eighth ventral segment long, oval, rounded and slightly 

 reflexed at the tip; ninth segment oblong, subparallel-sided, the 

 apex produced in the middle, subtruncate on each side, and angulate 

 externally, two hooks projecting from the internal sac (fig. 15). 



Length (excl. head) 9-9|, breadth 3i-4| mm. ((^ ?.) 



Hab. Mexico, Cuernavaca in Morelos, Juquila in Oaxaca 

 (Salle). 



Described from two pairs from Cuernavaca and a female 

 of the variety with immaculate prothorax from Juquila, 

 the former included by Gorham under D. plicahmi and 

 the latter under D. difficile. The dilated elytra, and the 

 small eyes and differently-shaped ninth ventral segment 

 of the male, distinguish D. amplipenne from D. plicatum, 

 the prothorax of which varies in colour in a similar way. 

 From similarly-coloured D. luridmn, (^, the present species 

 may be separated by the narrower prothorax, with 

 differently placed median notch, and the cleft outer 

 intermediate tarsal claw. 



38. Discodon cleroides. 



Discodon cleroides, Gorh., Biol. Centr.-Am., Coleopt, iii, 2, 



p. 84((^$) (part.) (wee p. 287). 

 Telephorus cleroides, Gorh., loc, cit. pi. 5, fig. 18 ($). 



