SUNIUS. 597 
Hab. Panama, Volcan de Chiriqui 2000 to 4000 feet (Champion). 
Antenne about as long as the head and thorax. Head elongate, the eyes placed at the 
middle of the sides, the pterygia very conspicuous; densely punctate. Thorax as broad 
as the elytra, longer than wide, much narrowed behind, sculptured like the head. 
Elytra rather longer than the thorax, densely covered with a rough granular sculpture. 
Hind body rather densely punctured and pubescent. 
This insect somewhat resembles the European S. anguinus, but is larger and much 
more elongate, with longer head, distinct pterygia, and very much longer and more 
slender antenne. The male has a deep sharply defined excision on the last ventral 
segment; the hind margin of the preceding segment is very slightly emarginate in 
the middle, and the emargination is studded with excessively minute bristles, so as to 
be file-like. 
3. Sunius vilis. 
Hlongatus, angustus, opacus, niger, griseo-pubescens, antennis, palpis pedibusque pallide flavis; capite sub- 
oblongo, convexiusculo. 
Long. 5 millim. 
Hab. Guatumata, Las Mercedes 3000 feet, Cerro Zunil 4000 to 5000 feet, Sabo 
(Champion). 
The description of S. cognatus applies to this species, except that in 8S. vilis 
the pterygia are not developed. Compared with S. anguinus, S. vilis is larger and 
more elongate, with much longer elytra, and considerably longer anterior part of 
the thorax. The male has an angular excision on the hind margin of the last ventral 
segment. 
Only one example has been procured of this species in each of the localities men- 
tioned. 
4, Sunius filiventris. 
Elongatus, omnino angustus, opacus, niger, griseo-pubescens ; antennis, palpis pedibusque pallide flavis, illis 
extrorsum fuscescentibus ; capite suboblongo. 
Long. 54 millim. 
Hab. Panama, Volcan de Chiriqui 4000 to 6000 feet (Champion). 
This species also is closely allied to S. cognatus, but is remarkable on account of its very 
slender form, the hind body being remarkably narrow ; it differs also from S. cognatus in 
several other particulars. The antenne are very long and slender, longer than the head 
and thorax, with the five or six outer joints infuscate. The eyes are convex, placed at 
the middle of the sides. The elytra are conspicuously longer than the thorax, and are 
‘a little narrowed towards the hind margin. The male has only a small excision on the 
last ventral segment. Unique. 
