282 THE CANADIAN ENTOMOLOGIST. 



segments two to four, none of them reaching the lateral margins of the 

 segments ; ventral surface dark. Head rather large, transversely oblong, 

 broader than thorax ; face wholly dark ; front microscopically tessellate, 

 with sparse distinct punctures ; occiput with abundant white hair ; 

 antennas short, dark, flagellum ferruginous beneath towards tip ; anterior 

 margin of prothorax above, and tubercles, cream-colour ; mesothorax and 

 scutellum shining but microscopically lineolate, with very sparse punc- 

 tures ; base of metathorax minutely roughened ; tegulae tinged with 

 brown ; wings short, reaching about to middle of fourth abdominal 

 segment, the apical veinless field large ; nervures dark brown ; stigma 

 centrally pale ; marginal cell obliquely truncate, its post-stigmatal portion 

 largest; second submarginal cell large, narrowed about one-half to 

 marginal ; third discoidal cell distinct ; legs piceous ; anterior knees and 

 anterior tibia? in front, cream-colour; apex of abdomen ferruginous, 

 acutely pointed. 



Hab. — Alpine Tavern, Mt. Lowe, Calif., about 5,000 ft., Aug. 12, 

 three on flowers of Eriogonum polifoliuin. The hind femora carry great 

 masses of yellow pollen. In my tables this runs to P. sphceralcece, but 

 P. Claypolei is a smaller insect, with darker nervures and a much more 

 shiny mesothorax. 



A few hundred yards from the spot where this species was taken, 

 one comes to a point which commands a splendid view of the lowlands, 

 with the City of Pasadena, the scene of the last labours of Prof. E. W. 

 Claypole, in the distance. The bee is accordingly named after the 

 inspiring teacher and able naturalist who has so recently been taken 

 from us. 



Colletes Americana, Cresson, 1868. — Four males at flowers of 

 Eriogonum fasciculatum, La Jolla, Calif., Aug., 1901. 



I take this opportunity to describe another new Californian Perdita, 

 not found on Eriogonum : — 



Perdita r/iois, n. sp. — $. Length, 5 mm.; head and thorax dark 

 bluish-green, base of metathorax decidedly blue ; pubescence short and 

 scanty; abdomen piceous, with broad straight transverse yellow bands 

 on bases of segments 2 to 5 (rarely absent on 5), all but the first 

 produced to the lateral margins of the segments, though narrowed a 

 short distance before the margin ; ventral surface of abdomen yellow. 

 Head ordinary, nearly circular seen from in front ; clypeus not in the 

 least concealed by hair ; clypeus (except two minute dots) and lateral 



