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



rounded and very feebly sinuate, and the hind angles 

 prominent. 



32. Silis ocularis. (Plate IX, fig. 94, prothorax, ^.) 



Silis ocularis, Gorh., Biol. Centr.-Am., Coleopt. iii, 2, 

 p. 293(c^). 



Hah. Guatemala, El Reposo and Paraiso, Pacific slope. 



In this species, based upon two males, the eyes are very 

 large ; the antennae are about as long as the body, slender, 

 and closely pilose ; the prothorax is very short and broad, 

 the lateral margins explanate, plicate, and with a very 

 deep, narrow, oblique notch behind the middle, the dilated 

 space in front of it appearing broadly hooked ; the elytra 

 are piceous, like the basal portion of the head, shining, 

 and comparatively short, the anterior portion of the latter, 

 the prothorax, scutellum, and femora (the tip excepted) 

 testaceous. Length (excl. head) 3-3| mm. 



33. Silis appendicularis. (Plate IX, fig. 95, prothorax, ^J.) 



Silis appendicularis, Gorh., Biol. Centr.-Am., Coleopt. iii, 



2, p. 304 {^ ?). 



Hab. Panama, Volcan de Chiriqui, above 4000 ft. 



A small, shining, sparsely pubescent insect, with the 

 anterior portion of the head, the mandibles, and prothorax 

 rufous or rufo-testaceous, the head and prothorax almost 

 smooth, and the elytra roughly sculptured. The pro- 

 thorax has the narrowly reflexed margins abruptly and 

 strongly dilated posteriorly in both sexes, the dilated 

 portion deeply, narrowly incised in the male (a curved 

 backwardly-directed lobe being thus formed in front of it) 

 and feebly emarginate in the female. The tarsi have one 

 of the claws lobed at the base in the male. The mandibles 

 are curved in the female. One male and three females seen. 



34. Silis aurita. (Plate IX, fig. 96, prothorax, $.) 



$. Silis aurita, Gorh., Biol. Centr.-Am., Coleopt. iii, 2, 

 p. 295. 



Hab. Costa Rica, Irazu. 



The type of S. aurita ($) superficially resembles S. 

 haematodes and S. erythroderes, Gorh., i. e. it is a shining 

 black insect, with a red head, prothorax, and scutellum. 



