A PPENDIX— GOLEOPTERA . 



47 



structure and ap]K'arance of a species of tlie genus Plakros, the elytra in tlieii 



close striation, punctuation, and scale-like but 



very close vestiture entirely agree with that 



genus, the antenute also agree, the head is a litth- 



more ])rominent, but the prothorax is unlike 



that ofy-'/o/cTOs, the sides Ix'ing rather contracted 



l)('l(iw the middle, and tla' land angles turneil 



imtward, the sides and niiddh- nf the disk are 



raised, thus k-aving a deep and wide fovea on 



each side while the centre itself has a deep rather 



rudely - formed channel, not open at the base 



nor reaching within one-third of the front. 



The characters which separate genera of 

 Lycidce are so difficult to seize and define, that T won 

 institute a genus upon a single s]>ecimeii. 



Fam. LAMPYRID.-E. 

 Cladodes, Solier, is a genus of Lampjiruhr, of which, generally, the species 

 are of large size, with antenna^ tiabellate on one side, and with ;i very sniall 



I'l.ATKUciS .' AI.TU'DLA, CORHAM. 

 HACIENDA OF GUACHALA. 



not undertake ti 





CLADODES NIGEICOLLIS, (i(lR 

 HACIENDA OF GUACHALA. 



portion of the abdomen capable of transmitting light. It is remarkable that 

 hitherto we have been unable to distinguish the sexes, probaldy all the speci- 



