120 Mr, G. C. Champion's Revision of the Mexican 



Hah. Mexico {Truqui, ex coll. Fry). 



Two males and one female. Very like Discodon melan- 

 aspis, but with the front of the head testaceous, the eyes 

 much larger in both sexes, the prothorax of the male smaller, 

 shorter, and rounded and narrowly incised at the sides 

 (much as in S. ohlita and its allies), and the tarsal claws 

 uncleft at the tip. 



28. Silis haematodes. (Plate IX, fig. 90, prothorax, (^.) 



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

 pp. 93, 294 {S ?). 



Hah. Guatemala, Pacific slope. 



The types of this species, from Capetillo (1 (^ and 3 $ $), 

 are very shining and sparsely pilose, and have unusually 

 coarsely, somewhat sparsely punctured, wholly black 

 elytra ; the others before me {^ $), from various localities, 

 have more densely punctate, nigro-piceous elytra, with 

 the humeri in some of them testaceous, the base of the 

 femora being also of that colour in three examples. The 

 eyes are moderately large in ^, smaller in $. The pro- 

 thorax in both sexes is strongly transverse, and has a 

 broad reflexed margin ; that of the male has a narrow deep 

 notch at about the basal third, preceded by a sinuous very 

 prominent tooth and followed by a smaller straight tooth ; 

 that of the female is broader, with the margins strongly 

 trisinuate and the hind angles acute. The inner claw of 

 the anterior tarsi, and the outer claw of the middle tarsi, 

 have an angular tooth at the base in the male. 



29. Silis melanocephala. (Plate IX, fig. 91, prothorax, <^.) 



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

 2, p. 294 {^). 



Hah. Guatemala, Capetillo. 



This species is based upon a single male example. It is 

 a form of, and perhaps not really distinct from, S. haema- 

 todes, which occurred at the same locality, with still longer 

 antennae, a black head and scutellum, and the tooth in 

 front of the lateral notch of the prothorax not curved out- 

 wards. According to Gorham the notch is placed nearer 

 the hind angle than in S. haematodes, but this is not obvious. * 



* He also compares S. melanocephala with 8. atripennis ( ? erythro- 

 deres), a nomen nudum. 



