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



straight incision on each side at about one- third from the base in J" ; 

 wider in $, with the margins broadly explanate and at most feebly 

 sinuate. Elytra broadly arcuato-explanate from a little below the 

 shoulder. Tarsi and sixth and seventh ventral segments of (J as 

 in D. normale. 



Var. a. Elytra nigro-fuscous, with the margin broadly flavous. 

 ^■ 

 Discodon perplexum, var. ?, Gorh,, loc. cit. p. 287. 



Var. $. Elytra with the margin and suture ochraceous, the disc 

 fuscous. ?. 



Var. y. Elytra wholly, and sometimes the abdomen also, nigro- 

 fuscous or black. (^ $. 



Discodon perplexum, var.?, Gorh., loc. cit. p. 287. 



cj. Eighth ventral segment raised and bilobed at the tip (fig. 25a), 

 the lobes (seen in profile) oblique and triangular at the aj^ex, and 

 armed with a sharp tooth above (lower portion of fig. 25) ; ninth 

 segment broad, the apices of the hooks enclosed within the internal 

 sac visible (fig. 25). 



Hab. Mexico, Vera Cruz and Oaxaca. 



The insect described by Gorham under the name D. 

 luridum has been received in numbers from Juquila in 

 Oaxaca, the var. a occurring at the same locahty and at 

 Playa Vicente in Vera Cruz ; the var. y has been found at 

 Misantla in Vera Cruz, and there are three others ((^ $) 

 in the Oxford Museum labelled " Mexico " ; the var. /5 

 is represented by a single $ in the Oxford Museum. The 

 variations in colour, therefore, correspond with those of 

 D. normale, of which D. luridum is perhaps no more than 

 a form with broadly explanate elytra, the genital arma- 

 ture of the male being very similar in the two insects. 

 From D. perplexum the position of the prothoracic incision, 

 the stouter and more tapering antennae, and the genital 

 armature, sufficiently distinguish D. luridum, at least in 

 the male sex. 



64. Discodon nigrifrons, n. sp. 



Telephorus nigrifrons, Chevr., in litt. 



Elongate, rather robust, tliickly clothed with long, coarse, cinereous 

 pubescence; nigro-piceous or black, the head from between the 

 eyes to the apex (the black basal portion produced into a dentiform 

 projection in the middle anteriorly), the base of the antennae, the 

 prothorax (a subcordate spot on the disc excepted in two speci- 



