NEW AMERICAN BEES. 99 



tween antennae, and a black transverse patch enclosing ocelli ; an- 

 tennas entirely red, fourth joint longer than third, but shorter than 

 twelfth ; mesothorax rugoso-punctate ; scutellum moderately elevated 

 and bilobed ; pleura with a black patch beneath ; legs red, hind tarsi 

 blackened on outer side ; tegalae red ; wings hyaline, the apex fuscous ; 

 stigma sepia-colour; b. n. some distance basad of t. m. ; second s. m. 

 broad, third narrowed almost to a point above ; abdomen apparently with- 

 out yellow spots, but close inspection shows a large very faint spot on 

 each side of second segment, and small ones on third — these may be dis- 

 tinctly yellow and conspicuous in some specimens, perhaps ; first seg- 

 ment with some blackish at sides of base ; third infuscated apically ; 

 pygidial plate broad, pubescent ; venter red, with only a dark mark on 

 first segment. 



$ . Length about 5 mm. ; head and thorax black ; a broad 

 ferruginous band across lower part of face, including nearly all of 

 clypeus, and sending a linear extension up the orbital margin, not 

 quite as far as the antennae; basal two-fifths of antennae blackened 

 behind ; fourth joint conspicuously longer than third, and about or 

 almost as long as last ; joints four to seven with the apex somewhat 

 projecting beneath, giving an imbricated appearance ; tubercles ferru- 

 ginous ; pleura with much white hair ; scutellum entirely black ; hind 

 femora and tibia? suffused with fuscous ; basal two-thirds of first abdo- 

 minal segment black or almost ; apical plate notched. 



By the small size this resembles jV. parva, Kob., but it is dis- 

 tinguished in the female by the very feeble spotting of the abdomen, 

 and more especially in the male by the structure of the antennae, and 

 the absence of yellow markings on the abdomen. 



Hab. Great Falls, Virginia, May 22nd (Nathan Banks). 

 The two specimens, one of each sex, are gummed on the same 

 card. 



Anthidium blanditum pradentatum, subsp. n. 



2 . Similar to A. blanditum, Cresson, but differing as follows : 

 upper part of clypeus with a large W-like black mark, consisting of a 

 pair of cuneiform marks side by side, the points directed downwards ; 

 anterior edge of clypeus also black, and a small dark area in the middle 

 just above the edge ; interruption of band on top of head broad, greater 

 than the interval between the lateral ocelli ; axillae as well as scutellum 

 with yellow bands ; no yellow spot beneath tubercles ; the first four 

 abdominal bands interrupted in middle, fifth only notched ; laterally, 

 the first band is notched behind, the second in front. 



Known from A. montivagum and A. porter a by the bright lemon- 

 yellow sixth abdominal segment, its margin evidently notched in the 

 middle, and the elongated marks over the eyes. 



Hab. Boulder, Colorado, June 22nd, 1906 (G. Hite). 



Dianthidium pudicum (Cresson). 

 $' . Length about 8 mm. ; strongly punctured ; black with cream- 

 coloured markings, no red colour anywhere on body or legs ; ventral 

 scopa pale orange ; hair on inner side of tarsi pale orange ; wings 

 strongly dusky, especially the marginal cell. 



K 2 



