96 COLEOPTERA OF NORTH AMERICA. 



Sub-Family IY.— HEMIPEPLIDAE. 



In this sub-family the anterior coxal cavities are nearly con- 

 fluent, and narrowly closed behind ; the elytra are rounded at tip, 

 but shorter than the abdomen. The anterior and middle tarsi 

 are somewhat dilated, and the fourth joint is not smaller than the 

 third, and is slightly lobed beneath ; the hind tarsi (of the males 

 alone ?) are 4-jointed. The body is very elongated, linear, and 

 depressed ; the head is narrowed behind the eyes, which are 

 large. The thorax in our species is somewhat narrowed behind, 

 with a large puncture each side, near the base ; the antennae are 

 a little longer than the head and thorax, very slightly thickened 

 at the extremity, with the first joint as long as the three follow- 

 ing ; the maxillae are not covered, and the genae are but slightly 

 prominent. 



Hemipeplus marginipennis, the only representative in our 

 fauna, is a very rare insect, found under bark in the Southern 

 States. 



Sub-Family Y.— TELEPHANIDAE. 



In this sub-family the anterior coxal cavities are broadly closed 

 behind, as in the first sub-family, but the third joint of the tarsi 

 is lobed beneath ; the maxillae are exposed, and the genaa but 

 slightly prominent. The genus Telephanus is found under stones ; 

 of Pseudophanus the habits are not known. 



Our two genera, each containing a single species, represent two 

 tribes : — 



Antennas with the first joint elongated. Telephanini. 



Antennas with the first joint short. Pseudophanini. 



Telephanus velox (Heterodromia velox Hald.) is found in the 

 Atlantic district; Pseudophanus signatus Lee. in Oregon. 



Fam. XXL— CRYPTOPHAGIDAE. 



Mentum moderate, trapezoidal, sinuate in front; ligula 

 corneous, usually with distinct paraglossse; labial palpi short, 

 3-jointed. 



Maxillae exposed at the base, with two coriaceous lobes, 



