300 cuiiculio:n^id^. 



[LeConte. 



The front coxae are very widely separated; the transvere suture between 

 the coxae is very well marked, and the presternum is widely, but not d eply 

 excavated; club of antennae elongate-oval, annulated, pubescent. 



Three species are known to me: 

 Elytral striie not punctured; 



Brown, prothorax obliquely narrowed from the base 1. sssostris. 



Black, " suddenly " near the tip.. 2. ater. 



Elytral striae crenate; body elongate, brown, opaque. ... 3. crenatus 



1. A. Sesostris (Lee), Pr. Ac. Nat. Sc. Phil. 1868, 364 {Band us); 

 Walsh, Am. Entomologist, ii, 105. Mudarus vitis Riley, 1st Missouri Re- 

 port, 131. 



Western States, on cultivated vines. Somewhat narrower than the next, 

 and easily known by the brown color and difterent form of the prothorax. 

 Head scarcely punctulate, beak as long as the prothorax, slightly curved, 

 feebly punctured, front constriction faint. Prothorax as long as wide, 

 sparsely punctured, with a smooth dorsal line, sides oblique from the base 

 for more tht'n one-half the length, then rounded and narrowed for a short 

 distance, and then broadl}'' constricted at a greater distance than usual from 

 the tip. Elytra very little wider than the prothorax, with a vague trans- 

 verse impression near the base, and two others near the sides; posterior 

 callus small, rather prominent; striae fine, interspaces wide, fiat. Beneath 

 coarsely punctured. Length 3 mm.; .13 inch. 



2. A. ater, n. sp. 



Very black, shining ; beak stouter and more curved than in the prece- 

 ding. Prothorax more sparsely punctured, more rugose at the sides, which 

 are scarcely narrowed for two-thirds their length, tlien very suddenly 

 rounded, and constricted far from the tip. Elytra a little wider than the 

 prothorax at base, sculptured and impressed as in the preceding. Length 

 3 mm. ; .12 inch. 



Southern and Western States, on Ampelopi^is quinquefolid. Mentioned 

 as Madarus ampelopnu by Walsh and Riley, loc. cit. sup., but not described. 



3. A. crenatus, n. sp. 



Elongate, dull ferruginous, opaque. Beak curved, as long as the head 

 and prothorax, punctured; head not punctured. Prothorax sul)quadrate, 

 sides parallel, rounded near the tip, and strongly constric ed, base bisinu- 

 ate; densely and coarsely punctured, constriction marked on the sides with 

 a transverse row of larger punctures. Elytra a little wider than the pro- 

 thorax, sides parallel, surface broadly impressed behind the base; striae 

 deep, very coarsely punctured, interspaces narrow, third and ninth carinate 

 near the tip, and confluent, so as to leave a deep fovea between their junc- 

 tion and the posterior callositj^ which is well marked. Beneath coarsely 

 punctured, less so upon the abdomen; fifth ventral less convex and less 

 densely punctured than in the two preceding species. Claws small, con- 

 nate for half their length. Length 2.8 mm.; .11 inch. 



Virginia, and Maryland; two specimens. Narrower even than Fseudo 

 baris angu^ta. 



