TRIBE XVIII. BARIXI. 40:5 



apex; disc rather densely and deeply, not coarsely punctate, with narrow 

 median smooth line. Punctures of elytral intervals coarse, confused, ru- 

 gose. Male with a small, elongate-oval, feeble impression near base of ab- 

 domen. Length 5.2 mm. 



Long Island, X. Y., July. Described from Georgia and Flor- 

 ida. Recorded also from Pennsylvania, District of Columbia and 

 Ohio. Occurs on Crata'gus in July, (fffiniilton.} 



XX IT OLIGOLOCHUS Casey, 1802. (Gr., "small" + -similar.") 



Small, oval, convex species resembling Microcholus but hav- 

 ing the mandibles small, thick, strongly curved, notched at apex 

 and broadly crossed when closed; prosternum flat, not impressed, 

 nor excavated in front but with a fine, deep, transverse constric- 

 tion ; front coxre separated by less than half their own width; 

 pygidium slightly exposed at tip in male. 



620 (8949). OLTGOLOCIH-.S COXVKXUS Lee., 1876, 422. 



Oval, convex. Black, shining, legs reddish-brown; very sparsely cloth- 

 ed with elongate white scales, condensed toward sides and on median line 

 of thorax and toward base of third and fifth intervals of elytra. Beak 

 slender, feebly curved, as long as thorax, coarsely, sparsely, unevenly punc- 

 tate on sides, smoother toward tip. Antennae inserted in front of middle, 

 scape almost reaching the eye, second joint of funicle scarcely longer than 

 third. Thorax one-third wider than long, sides broadly curved from base 

 to apex, which is distinctly constricted but not tubulate; disc coarsely, not 

 densely punctate, the smooth median line entire. Elytra slightly wider at 

 base and three-fourths longer than thorax; striae coarse, deep, not punctate; 

 intervals each with an uneven single row of small, close-set punctures, 

 somewhat confused on third. Length 2.4 mm. 



Known only from Tampa and Enterprise. V]<\., and District 

 of Columbia. 0. robuxtux Linell (1807, 53) is a synonym of Cen- 

 trum* hr<ic<it<i Casey. 



XXIII. ImosTETiirs Casey, 1S!) ( Gr., "peculiar" + "chest.") 



Small oval or elongate-oval species having the an tenure in- 

 serted at or beyond the middle, second joint of funicle as long as 

 the next two, club usually small; prosternum broadly impressed, 

 not narrowly sulcate, noticeably tumid, especially before the coxa-, 

 which are never separated by more than one-third their width; 

 thorax tubulate at apex, its disc more or less wrinkled or strigose, 

 the median basal lobe prominent; vestiture consisting of small, 

 slender setre and scales which, while very sparse, are distinct, 

 especially towards the sides of the body beneath. The four known 

 species occur with us. 



