336 Coleopterological Notices, V. 



-with long Llack sparse setse toward tip. Head wider than long, three-fifths as 

 wide as the prothorax ; eyes moderate, at their own length from the protho- 

 rax ; infralateral carina fine and entire ; antennze slender, feebly incrassate, 

 as long as the prothorax and elytra, bristling with long sparse setse, first joint 

 a little longer and thicker than the second, the latter slightly longer than the 

 third, which is nearly twice as long as wide, four to ten feebly obconical, the 

 latter slightly wider than long, eleventh ogival, as long as the two preceding. 

 Prothorax large, three fourths wider than long, widest at basal third, the sides 

 broadly arcuate, gradually convergent toward apex ; base slightly wider than 

 the apex, both broadly arcuate; basal angles obtuse and rounded but not 

 obliterated ; disk evenly convex, without trace of impression. Elytra as long 

 as the prothorax and distinctly narrower, one-half wider than long ; sides 

 very feebly divergent from the base, scarcely visibly arcuate; disk slightly 

 impressed on the suture behind the scutellum. Abdomen a little longer than 

 the anterior parts, slightly narrower than the elytra ; sides subparallel, becom- 

 ing gradually convergent behind ; first segment impressed at base, the second 

 feebly, the third unimpressed ; fifth a little longer than the fourth. Length 

 1.6 mm. ; width 0.4 mm. 



Rhode Island (Boston Neck). 



This species is apparently congeneric with the preceding, although 

 the vestiture is erect and not decumbent, and the posterior tarsi 

 shorter, with the two basal joints subequal in length, 



COLPOSURA n. gen. 



Body narrow, elongate, rather convex, with a somewhat pro- 

 nounced longitudinal development of abdomen. Head triangular, 

 widest behind, not inserted, borne on a distinct but somewhat wide 

 and very short neck, the base nearly in contact with the pronotum 

 throughout; eyes moderate; infralateral carina completely want- 

 ing. Antennae rather short, very feebly incrassate, the three basal 

 joints more or less elongate. Gular sutures straight, convergent 

 from the base nearly to the support of the mentum, then divergent 

 to the sides of the buccal opening. Mentum small, transversely 

 trapezoidal, truncate. Ligula with a small rounded thick median 

 lobe, apparently perfectly simple, the labial palpi three-jointed, with 

 the middle joint shortest. .Maxillary palpi with the second joint 

 rather small, slender, the third much longer, thicker, oval, con- 

 stricted at base ; fourth small, subulate. Prothorax parallel, the 

 hypomera moderately inflexed, partially visible from the side. 

 Elytra well developed. Abdomen long, the first tergite rather 

 widely but feebly, the second and third narrowly and obsoletely, 

 impressed at base, the fifth much longer than the fourth; sixth 



