TENEBRIONIDAE. 235 



pens visible ; antennae tolerably long, slender, outer joints rounded, 

 very slightly thicker ; nientum small ; gular peduncle distinct ; 

 ligula prominent ; palpi with the last joint slightly dilated. Elytra 

 with moderate epipleurae occupying the whole of the inflexed 

 portion. Presternum prolonged behind ; mesosternum concave ; 

 metasternum moderately long, with narrow side pieces. Anterior 

 coxie almost rounded ; middle coxae with distinct trochautin, the 

 epimera exceedingly short ; hind coxae not widely separated ; 

 tibiae not dilated ; spurs distinct ; tarsi with small spines beneath ; 

 iirst joint of hind tarsi very long. 



This tribe is represented in our fauna by Grypticus obsoletus 

 Say, found in the Atlantic district. 



This and allied foreign genera are placed by Lacordaire as a 

 group of Coniontini, with the remark that it should constitute more 

 properly a distinct tribe. It differs very much from Coniontini, 

 as will be seen by the characters given above, and still more by 

 the hind margin of the third and fourth ventral segments, being- 

 very distinctly coriaceous. 



Tribe XL— BOLETOPHAGINI. 



In this tribe the body is oblong and winged, opaque, with the 

 surface rough, or at least with the elytra costate ; head received in 

 the thorax as far as the eyes ; front variable ; epistoma sepa- 

 rated from the labrum by a short clypeus ; eyes coarsely granu- 

 lated ; mentum inserted upon a gular peduncle ; ligula promi- 

 nent ; palpi not much dilated ; head under the eyes with a large 

 groove for the reception of the base of the antenna? ; elytra with 

 narrow epipleurae. Anterior coxae transverse ; middle coxae with 

 a small distinct trochantin ; hind coxae separated ; intercoxal 

 process triangular ; legs moderate ; tibial spurs small, tarsi pu- 

 bescent beneath ; the first joints very short, equal ; the last joint 

 longer than the others united. 



I would divide the tribe into two groups according to the form 

 of the epistoma and eyes. 



Eyes deeply emarginated ; epistoma much dilated. Boletophagi. 



Eyes entire ; epistoma not dilated. Rhipidandri. 



Group I. — Boletophagi. 

 In this group the front is prolonged and margined anteriorly 

 and at the sides, covering the mouth above, and causing the eyes 





