LoConte.] 



BASITROPINI. 405 



Basal ridge flexed abruptly forwards at the hind 



angles, and continued along the sides of the 



prothorux for a short distance BRACK YTARSUS. 



Basal ridge gently rounded and becoming obsolete 



at the hind angles ANTHRIBTJLUS. 



BRAOHYTARSUS Sch. 



This genus contains the type of Geoffroy's genus Anthribus ; but in con- 

 sequence of his only semi-recognition of the binominal Linnaean nomen- 

 clature, of a definition properly accompanied by a specific name, indica- 

 ting the object described, was delayed until 1799. The generic name thus 

 proposed by him (1764), was appropriated by Olivier (1789 , and by La- 

 treille and Fabricius subsequently, and applied to an assemblage of species 

 now divided into several genera. Schonherr afterwards divided this as- 

 semblage of species, and gave the name Brachytarsus to the genus here 

 treated of. I cannot, therefore, advise the restoration of the name Anthri- 

 bus, with the authority Geoffrey, to this genus, even though it be sanc- 

 tioned by the authority of the Munich Catalogue, and the Check List of 

 Mr. Crotch. 



Legs testaceous not annulated 2. 



Legs brown, annulated with darker; elytra tessellated on 



the alternate interspaces 1. alternatus. 



2. More elongate, densely and coarsely pubescent with 



yellowish-gray hair, with indistinct stripes of gray.. 2. griseus. 



Pubescence coarse and dense, yellowish-gray, slightly 



mottled with paler dots on the elytra 3. limbatus. 



Pubescence finer, scarcely mottled, body more elongate 



than in B. limbatus 4. plumbeus. 



Pubescence coarse and dense, brownish-yellow, not mot- 

 tled ; smaller and more elongate than B. limbatus. . 5. vestitue. 

 Shorter and stouter, pubescence finer, gray, not mottled; 



thighs usually dusky 6. tomentosus. 



Longer, pubescence grayish -yellow, mottled with dark 

 brown, elytra each with a basal spot, and another be- 

 hind the middle 7. variegatus. 



1. B. alternatus. Anthribus alt. Say, Journ. Ac. Nat. Sc. Phila. v. 

 250 ; ed Lee., ii, 314. 



New York, Missouri and Texas ; of the same form, size and color as 

 Arceocerus coffece, but quite different by the form and position of the an- 

 tennse. 



2. B. griseus, n. sp. 



Elongate, subcylindrical, piceous, densely clothed with rather CO 

 gray hair, verging towards ochreous in places, but without definite pa' tern. 

 Head as in B. limbatus. Prothorax longer than its width at base, rounded. 

 but scarcely narrowed on the sides as far as the middle, then more obl'que- 

 ly rounded and narrowed to the tip, which is rounded as usual ; base 



