1868.] 167 [Cresson. 



tirely bl; ck; metathorax densely seulj^tured, the basal margin crenii- 

 lated, or with a transverse row of short longitudinal striae; tegulae 

 black, shining; wings hyaline, nervures piceoiis; legs black, thickly 

 clothed with a pale ochraceous pubescence, longest and thickest on 

 femora, apex of tarsi rufo-testaceous ; abdomen elongate, subdepressed, 

 closely and finely punctured, densely pubescent at base; apical mar- 

 gin of the segments, except the last, with a fascia of thin fusco-ochra- 

 ceous pubescence, paler in certain lights; venter banded with dense 

 pubescence of same color. Length six and one-half lines. 



Hah. Canada West. Mr. Wm. Saunders. (Coll. Am. Ent. Soc.) 

 By the elongate, subdepressed form, this species has much the 

 general appearance of an Andrena. 



6. C. distincta, n. sp. 6 . Black, shining, head finely and 

 closely punctured, clothed with pale ochraceous pubescence, very 

 dense on face and cheeks, mixed with black on vertex, thorax with 

 sparse, deep punctures, clothed with dense ochraceous jiubescence, 

 that on mesothorax pale yellowish-brown; postscutellum densely 

 punctured; metathorax rugose, the basal space with a transverse row 

 of short, distant, well-defined, longitudinal carinas, the pubescence 

 long; wings hyaline, apical half dusky, nervures black; legs slender, 

 clothed with long ochraceous pubescence, tarsi fulvous; abdomen 

 short, convex, shining, with fine, tolerably close punctures; basal 

 segment thinly clothed with ochrace(jus pubescence, the apical mar- 

 gin of the segments above and beneath with a narrow fascia of pale 

 ochraceous or cinereous pubescence. Length four lines. 



Hab. Georgia. Mr. James Ridings. (Coll. Am. Ent. Soc.) 

 A very distinct species. 



7. C. americana, n. sp. ?. Small, robust, black, shining; 

 head and thorax with distinct, rather close punctures, and clothed 

 with short, dense lemon-yellow, sometimes ochraceous, pubescence, 

 j)alest on metathorax ; clypeus sh<jrt, broad, depressed, rugosely 

 punctured, apex truncate; tips of mandibles rufo-piceous ; antennse 

 short, black; the pubescence on the under surface of thorax some- 

 times nearly white; pleura very densely and deeply punctured; post- 

 scutellum rugulose; basal margin of metathorax with a transverse 

 row of short, distant, longitudinal carinas; tegular dull testaceous; 

 wings short, hyaline, nervures rufo-piceous; legs short, robust, black 

 or piceous, clothed with pale ochraceous pubescence, veiy dense and 

 long on outside of posterior femora; tibial spurs pale honey-yellow, 

 tips of tai-si rufo-testaceous; abdomen ovate; convex, shining, finely 

 and densely punctured, with a very short, fine, pale pubescence; first 



