and Central American Telephorinae. 109 



Differs from S. albicincta in tlie testaceous antennae and 

 legs, the very large eyes of the male, and the broader 

 prothorax in both sexes, that of the male with longer 

 lateral lobes, the anterior lobe angulate externally (as in 

 S. albicincta), the posterior lobe narrow as seen from above 

 and strongly sinuate. The black head, and the large eyes 

 and less dilated prothorax of the male, the latter with 

 narrow, differently shaped lobes, separate S. f estiva from 

 >S. jocosa, an insect occurring at the same locality. Fifteen 

 specimens seen, four of which are males. 



As stated by Grorham (loc. cit. pp. 301, 302), S. festiva 

 and S. jocosa were originally recorded by him as varieties 

 of S. albicincta. 



14. Silis erythrodiscus, n. sp. (Plate IX, fig. 78, 

 prothorax, (^.) 



Silis sp. no. 24, Gorh., Biol. Centr,-Am., Coleopt. iii, 2, 

 p. 306 (c^). 



(J. Comparatively short, rather broad, the head and prothorax 

 shining, the elytra opaque, closely fusco-pubescent; black, the pro- 

 thorax with the entire disc or two transversely placed spots, and 

 the base of the mandibles rufous or rufo-testaceous. Eyes small. 

 Antennae stout, feebly serrate, moderately long. Prothorax short, 

 strongly transverse, feebly canaliculate and broadly, deeply ex- 

 cavate on the disc posteriorly, the space on either side of the cavity 

 tumid, the margins reflexed, bilobate towards the base — the anterior 

 lobe oblique, stout, rounded externally, the posterior lobe narrow, 

 curved, arising from just in front of the sharply reflexed basal 

 margin, and armed with a short slender hook near the apex an- 

 teriorly. Elytra comparatively short, blunt at the tip, somewhat 

 explanate laterally from a little below the base, finely sculptured. 

 Legs stout. 



Length (excl. head) 4-4|, breadth l§-2 mm. 



Hab. Mexico {Truqui, in Mus. Brit.), Ciudad in Durango 

 (Forrer), Cuernavaca {Hoge). 



Three males, including the one from Durango left 

 unnamed by Gorham, the rufescent portion of the disc of 

 the prothorax in the latter reduced to two spots. In this 

 insect the lateral lobes of the prothorax are narrowly 

 separated and placed further back than usual, and the legs 

 and antennae are stout. The black-margined rufescent 

 prothorax is suggestive of the Guatemalan Silis sicula 



