J^escrijif/'oiis and luconls nf Burs. G9 



XV. — Drsrri/jlioHS and Records of Bees. — XH. 

 By '[\ D. A. C'()(Ki;iu:i.i,, University (jf Colorado. 



Numada (X(tn//iidiiiiii) si/hri'ti/a, Lovell & Ckll., IDOj. 



IJoiilder, Coloi'ado, at Howrrs of l^uls.itilld hlrsutis.sunn, 

 01)0 cT, -May 1, V.m\ [Marie Gill). 



Tliis species was previous! >' known ])y a siu^^le niak; taken 

 ill Maine. The Colorado exa!n[)!c has the tl.igelliiin duller 

 and distinctly denticulate, and the b. n. passes a short distance 

 basad of the t.-m., but they otherwise agree. In my table 

 oF Rocky Mountain species the insect runs to N. civilh, from 

 uhieh it is easily known by the denticulate flagclluin and 

 other characters. Jt is m arcst to N. late doi les, llol)ertson, 

 and it is not unlikely that it will [)rove to be only sub- 

 specifically distinct. 



Xomuda pulsatillce, sp. n. 



? . — Length about 7\ min. 



Red and black, Avith no yellow anywhere ; mandibles 

 simple; liead broad, facial quadrangle conspicuous'y ])roader 

 than long ; head nd, uith the cheeks posteriorly, a large 

 jiatch enclosing the ocelli, the middle of front (enclosing no 

 red spot), the region about autcnnai, and a broad mark 

 extending halfway down sides of clypeus all black; the 

 supraclypeal area is black, v;'\i\\ a red spot; hair of head and 

 thorax above fuscous, black on scutellum and scape; that on 

 metathorax, pleura, and cheeks pallid; antennae long, en- 

 tirely ferruginous, third joint about as long as fourth ; 

 mesothorax coarsely rugoso-punctate, red, with a broad 

 median black stripe ; scutellum red, tiattish^ and not 

 bilobed ; metathorax nearly all red except a broad median 

 black band ; pleura red ; tegulse shining coppery red, rather 

 closely punctured. Wings very dark at apex, stigma ferru- 

 ginous, nervures dark fuscous ; second s.in. not especially 

 broad above ; b. n. a moderate distance basad of t.-m. Legs 

 bright red, the cox^e and trochanters marked with red, and 

 the hind femora with two more or less suffused black stripes 

 behind ; hind tibiae and tarsi behind with fine golden 

 tomentum. Abdomen broad, oval in form_, very shiny 

 chestnut-red, the hind margins of the first two segments 

 strongly blackened, but not really banded; first segment 

 with a broad black mark (enclosing a red dot) on each side 



