Robertson — North American Bees. 339 



the latter sometimes mixed with white hairs basally, joints 

 2-4 ferruginous, paler on hind tarsi; anal fimbria blackish 

 medially. Length 6-7 mm. 



Mass., N. Y. (A. P. Morse), Mich. (Nason); 5 $, 2 $ 

 specimens. 



This is quite distinct from M. ciliata and patella ta. The 

 female of M. palellata is unknown or mixed with that of 

 M. ciliata. It is impossible to describe the female so that 

 it can be distinguished. M. andrenoides Sm. and M. longilin- 

 gua Prov. are sex names which can hardly be identified. 

 These five names no doubt belong to three species. 



M. steironematis is nearly twice as large and differs from all 

 in having the abdomen closely and strongly punctured. 



Panurgus Panz. 



Panurgus novae-angliae $. 



Black, shining, finely punctured; pubescence above black, 

 mixed with paler on clypeus, middle of face and scutellum, 

 beneath paler, mixed with black on cheeks and legs ; clypeus 

 produced, transverse, densely pubescent ; labium short, broad, 

 finely roughened; mandibles rufous at tips; antennae sub- 

 moniliform, black, dull ferruginous beneath, fourth joint 

 longer than following joints and longer than 2 and 3 together; 

 face closely, vertex sparsely punctured; mesonotum sparsely 

 punctured, disc of metathorax rather strongly rugose; wings 

 except base fusco-byaline, nervures, stigma and tegulae 

 dark; second submarginal cell about as long as first, narrow- 

 ing about one-third above, receiving recurrent nervures near 

 base and apex ; legs dull ferruginous, tarsi somewhat paler ; 

 hind trochanters strongly produced behind into a mammiform 

 process, the femora thickened; tibiae arcuate, thickened 

 towards apex and presenting a small tooth on the lower edge ; 

 abdomen minutely punctured, apical margins of segments 

 subdepressed, narrowly pale testaceous; last ventral segment 

 shining, presenting a median elevation which terminates in a 

 long spiue, and has a shorter tooth on each side. Length 7-8 

 mm. 



Mass., Ct. (A. P. Morse) ; 2 $ specimens. 



