THE CANADIAN ENTOMOLOGIST. 329 



hidden by the abundant white pubescence. The legs, except the tarsi in 

 back, largely covered with short, almost appressed whitish pubescence. 

 Wings brownish hyaline, nervures very dark brown ; tegulae shining, 

 punctured. Abdomen shining, the dorsal segments with a polished, then a 

 punctured band, an apical subopaque band finely punctured ; first 

 segment with erect whitish pubescence, the second dorsil segment 

 with short whitish pubescence at the base, a narrow whitish band 

 of appressed pubescence on the apical border of the punctured band ; 

 segments two, three and four with similar fasciae, otherwise the segments 

 have short, black, erect hairs in abundance ; the apical segment is finely, 

 closely punctured, slightly impressed on each side, black haired. Almost 

 entirely black, claws dark brown in part. 



J. Length, 11.5 mm. Very similar to the female; hair on face 

 yellowish, the clypeus with a long moustache, hairs on top of head 

 pale and fine ; first joint of flagellum plainly shorter than the second ; 

 anterior coxae armed with a prominent spine ; apical dorsal segment with 

 a broad, uneven, elliptical emargination, the sides of the segment with 

 large teeth, the right side having but one, the left side two ; the pointed 

 process of apical ventral segment long; when looked at from back, its 

 tip is on a level with the tips of the sides of the apical dorsal segment. 



Types : Coll. Acad. Nat. Sciences, Philadelphia. 



Type locality, Manumuskin, New Jersey, June 24, 190T (E. Daecke). 

 Co-type $ , same date, same place. One £ , Clementon, N. J., June 5, 

 1 901 ; DaCosta, N. J., July 14, 1901. The thoracic pubescence in these 

 specimens has an ochreous tint. Two $ g , Iona, N. J., June 16, 1902. 

 In one of these specimens the lateral processes and the apical process of 

 apex of abdomen are abbreviated, but hold the same proportion to each 

 other as the typical specimens. The species compares well with M. 

 frugalis, Cress., but that differs in the distinct punctuation of head and 

 thorax with shining surface ; the emargination is regular, semicircular, the 

 tooth beneath short. The type was compared with the type of M. 

 frugalis, Cress., J, in the U. S. National Museum. 



Frederick Smith described three species of the genus Colletes from 

 North America. Up to the present time only one species, C. thoracicus, 

 appears to have been identified. I submit descriptions of what are taken 

 to be C mandibularis and C. uitidus, the remaining species. 



Colletes mandibularis, Sm. 



Colletes mandibularis, Sm. lint. Mus. Cat., I., 5, 1853. ^ . Type 

 locality, Georgia. 



