1893.] NATURAL SCIENCES OF PHILADELPHIA. 551 



Bothynostethus distinctus Fox. 



B. distinctus Fox, Entom. News. II, p. 31. £ $ . 1891. 



9 • — Anterior margin of clypeus bilobate medially and armed 

 laterally with at least two strong teeth ; front finely but not very 

 closely punctured; vertex more sparsely so ; flagellum subclavate, 

 the first joint shorter than the second, which joint is about equal to the 

 third ; dorsulum punctured about like the front ; scutellum impressed; 

 metathorax above with a broad and deep, longitudinal channel, 

 which is connected, or nearly so, with the strong depression at the 

 base of posterior face, a little beyond the base of the upper surface is 

 a strongly foveolate, curved furrow, which extends from side to side, 

 with exception of these furrows the upper surface of metathorax is 

 smooth, or finely puuctured, metapleune strongly rugose ; abdomen 

 indistinctly punctured ; pygidium large, rounded at tip. Black ; 

 line on prothorax above, tubercles, postscutellum and spot near the 

 base of four posterior tibia?, whitish; the whole insect more or less covered 

 with silvery pubescence, which is most dense on head in front ; wings 

 subhyaline, apical margins broadly fuscous ; last ventral segment 

 red. Length 7-8 mm. 



" <? . — More slender than the 9 , the anterior margin of clypeus 

 subtruucate, or slightly sinuate ; the anterior tibia? in front, and the 

 tarsi are rufous; pygidium short, obtuse at tip, with appressed pubes- 

 cence, otherwise as in the 9 . Length .30 inch." 



New Jersey (July and August); Montana. With exception of 

 being smaller, I can find no difference worth noting in the Montana 

 specimens. 



