42 J. L. LECONTE, M. D. 



broadly toothed about the middle ; palpi with the last joint oval, obliquely 

 truncate, so as to appear pointed and aciculate at tip ; ligula and mentum 

 small, supported on a broad gular peduncle which is concavely impressed 

 behind ; sutures widely separated. Antenna long, broadly compressed, 

 strongly serrate, joints triangular, second but one-half as long and one- 

 half as wide as the third, outer joints ( S ) longer, narrower and more 

 prolonged at tip than the lower joints. Prothorax transverse, truncate 

 in front, broadly rounded behind, sides short, inflexed flanks very narrow ; 

 under surftice of prothorax membranous, with the exception of a very 

 very narrow collar which supports the front legs ; coxae and trochantins 

 large. Middle coxae contiguous. Side pieces of metathorax broad, nar- 

 rowed and pointed behind, not sinuate on the inner margin, epimera ex- 

 posed. Elytra one-half as long as the abdomen, rounded at tip ; epipleurae 

 narrow, but distinct for one-half the length. Scutel broad, slightly emar- 

 ginate behind. Wings straight, extending along the dorsal surface of the 

 abdomen. Legs feeble, claws small, simple. 



?) . — Antenna; nearly as long as the body, strongly serrate, seventh 

 ventral segment broadly emarginate, eighth narrow, channeled. 



9 . — Antenn;Te two-thirds as long as the body, outer joints narrower, 

 but not longer than the lower joints. 



Black, opake, sparsely and finely pubescent, front, occiput and under surface 

 of head fulvous. Length 4 mm. ; Middle States, on leaves. 



erytlirocephaliis Fabr. 



Sub-f\imily III.— TELEPHORID^E. 



The insects of this sub-family are -closely related to the Lampyridse 

 genuini, but are easily known by the stronger development of the mouth 

 organs, the smaller size of the eyes, which permits the antenn;^ to be 

 widely separated at the base, and by the straight, or nearly straight out- 

 line of the inner side of the metathoracic episterna. 



Light organs do not exist in any of the species, and the sexes are very 

 similar in form, differing, at most, by the length of the antenna? and the 

 outline of the sides of the prothorax. Sexual characters are also seen 

 in the last segments of the abdomen, especially in Chau/iognafhus and 

 Mdlthodea ; in the latter genus the claspers assume large size and great 

 complexity. In a few instances tibial and tarsal characters distinguish the 

 sexes, and in Biiany species of Telepliorus the; ungues are quite different. 



I have excluded the singular genus Ometliea from this sub-family. It is 

 not a Lampyride, but where it may be suitably placed I do not know. 



Two tribes may be recognized in our fauna : 



Mentum very long, wider in front CuAtiLioGNAXHiNi. 



Mentum sm;ill, quadrnte TELKPHoniNr. 



