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



tarsi broadly lobed, and outer claw of the other tarsi cleft at the tip, 

 in S. 



Var. a. Prothorax, epistoma, and scutellum straw-yellow. 



Discodon flavicolle, Gorh., loc. cit., pp. 81, 287 (excl. 

 Panama specimens). 



^. Eighth ventral segment oval, rather broad, feebly notched in 

 the centre at the tip; ninth segment somewhat broadly produced 

 and subtruncate at the apex, two curved hooks projecting from the 

 internal sac (fig. 7). 



Hah. Mexico, Nuevo Leon, Vera Cruz, Oaxaca, Mexico 

 City, etc. ; Guatemala ; Costa Rica. 



A variable insect, recognisable amongst its allies by the 

 position of the prothoracic notch of the male, and from 

 D. normale, etc., by the form of the tarsal claws of the 

 same sex. In the long series examined the black mark 

 on the disc of the prothorax (which is never dilated into 

 a cruciform patch posteriorly) becomes gradually evanes- 

 cent, till it entirely disappears. The length (excluding 

 head) varies from 8-11 mm. Five males have been dis- 

 sected, three of D. plicatimi and two of D. flavicolle. 



28. Discodon stramineicolle, n. sp. 



Discodon fl,avicolle, Gorh., Biol. Centr.-Am., Coleopt. iii, 

 2, p. 287 (part.). 



Elongate, shining, sparsely pubescent; black or pitchy-black, 

 the anterior half of the head, the base of the mandibles, the anterior 

 coxae, prothorax, and scutellum pale flavous. Eyes very large in cj, 

 smaller in $. Antennae long, filiform, sparsely pilose. Prothorax 

 transverse, arcuate in front ; the lateral margins abruptly, obliquely 

 notched at about the basal third (a dentiform projection being thus 

 formed in front of the emargination) in J', and feebly sinuate in $; 

 the entire basal margin strongly reflexed ; the hind angles rectangular 

 in (J, obtuse in $. Elytra very long, broader at the base than the 

 prothorax, and gradually widening from the base, faintly costulate 

 on the disc, the margins not explanate. Inner claw of anterior 

 tarsi broadly lobed, and outer claw of the other tarsi deeply cleft 

 (the outer portion of the claw shorter than the inner), in ^. 



^. Eighth ventral segment narrowly arcuato-emarginate in the 

 middle and upturned at the apex, and produced into a dentiform 

 projection on each side of the emargination (fig. 8) ; ninth segment 

 broad, lobed towards the sides posteriorly, a stout, oblique, com- 



1 



