98 C0LE0PTERA OF NORTH AMERICA. 



Tribe I.— TELMATOPHELIItfl. 



The antenna? are inserted at the sides of the front, which is 

 narrowed and prolonged ; the clypeal suture is not visible ; the 

 anterior coxse are slightly oval; the prosternum is prolonged, 

 meeting the concave mesosternum. The tarsi are 5-jointed in 

 both sexes, the fourth joint is very small, and the third is pro- 

 longed beneath into a lobe ; the second joint is slightly lobed. 



Telinatophilus, and a new genus, constitute this tribe; the 

 species are found on plants near water. One species of each 

 genus is known to me from the Atlantic district ; they are found 

 on plants near water. Loberus resembles, at first sight, a small 

 Haltica of the group Crepidodera ; the color is shining black, 

 the thorax but sparsely punctured, with a transverse impression 

 very near the base ; the elytra have striae: of fine punctures, from 

 which proceed very short fine hairs. 



The genera are thus distinguished : — 



Ninth joint of antennae scarcely wider than the eighth ; body densely punc- 

 tured and pubescent. Telmatophilus. 



Ninth joint of antennae as wide as the tenth ; body scarcely pubescent ; ely- 

 tra with striae of punctures. Loberus. 



Tribe II.— CRYPTOPIIAGIjVI (genuini). 



The antenna? are inserted at the sides of the front, which is 

 sometimes prolonged; the ninth joint of the antennae is scarcely 

 narrower than the tenth. The anterior coxse are decidedly trans- 

 verse. The tarsi are sometimes 5-jointed in both sexes, but 

 usually the hind tarsi of the male are 4-jointed; the joints are 

 not lobed beneath, and the fourth is but little smaller than the 

 third. The anterior tarsi of the males are slightly dilated, and 

 hairy beneath. 



Two groups are known by the following characters : — 



Mesosternum deeply eniarginate, receiving the prosternum. 



Antherophagi. 

 Mesosternum not emarginate. Cryptophagi. 



Group I. — Antherophagi. 



The genus Antherophagus alone, represented by one species in 

 the Atlantic district, and one in Russian America, constitutes this 

 group, which differs from the next not only by the prosternum 



