134 AMERICAN CIOLEOPTERA. 



34. A. opacieolle Smith. — Black, very sparsely and finely pubescent. Beak 

 {% ) not slender, shorter than the head and prothoras ; sides parallel, dilated a 

 little behind the middle, and feebly at the tip; surface dull, moderately punc- 

 tate; tip polished, ( 9) a little longer, less dilated. First joint of the antenna 

 shorter than the next two, third reaching the eye. Front more or less canalicu- 

 lose; eyes moderate. Prothorax usually a very little wider than long; sides 

 nearly parallel, slightly diverging posteriorly; apical constriction feeble; surface 

 closely punctate, a sub-basal impressed line. Elytra about three-fourths longer 

 than wide; humeri prominent; post-humeral sinuation feeble; sides slightly 

 arcuate, width greatest just behind the middle; striae deep; intervals narrow, 

 not much wider than the strife, nearly flat at their summits, more or less rugose 

 or transversely wrinkled. Beneath strongly but not very closely punctate, the 

 sides of the metasternum rather more closely punctured than the abdomen. Legs 

 moderate ; claws with a small acute tooth. Length 1.8-2 mm.; .OT-.O.-^ inch. 

 '^ . Front and middle tibite feebly inucronate; meta^^ternal spicules present. 

 9. Til)ife unarmed. 



Hub. — Washington, Oregon, California. 



A male and female from Placer County, California, have been 

 selected as the types. In these there is not much sexual difference 

 in the elytral tips. The tip of the right elytron is rounded slightly 

 in both sexes, that of the left scarcely rounded. One female shows 

 feeble metasternal spicules, others do not. With the types above 

 mentioned I have associated several female examples in various 

 collections, which differ more or less from the types and from each 

 other, while they agree fjiirly well in general fticies. If on the 

 appearance of males the identity is proved, the following variations 

 are to be noted : 



The beak may be much longer than described ; the tip polished 

 to a variable extent. The prothorax may be obviously wider than 

 long, with the sides divergent to the middle and parallel in basal 

 half. The elytral intervals may be wider and convex. Notwith- 

 standing these variations, with moderate care, there should be no diffi- 

 culty in recognizing opacicolle ; and if males be present, identifica- 

 tion becomes perfectly simple. The presence of the metasternal 

 spicules is worthy of especial note as being the only instance known 

 to me outside of Section I. The affinity with the first sectiini thus 

 unmistakably established is furthered by the feebly-toothed claws as 

 well as the general facies. 



35. A. coxale n. sp. — Elongate, black, sometimes with a feeble, greenish 

 bronze lustre, finely, sparsely pubescent. Beak ( 'J, ) as long as the head and pro- 

 thorax, slender, rather feebly curved, slightly dilated, parallel, strigose and punc- 

 tate in basal two-thirds, thence more sparsely punctate and shining; ( J) longer 

 than the head and thorax, more slender, not at all dilated, slightly expanded 



