300 Journal New York Entomological Society. tVoi. xxvil. 



Triepeolus helianthi pacificus new subspecies. One male, Aug. 26 

 (W. P. Cockerell). 



I find that the western forms related to T. helianthi are at least 

 subspecifically distinct; the differences are indicated in the following 

 table : 



Triepeolus Robertson. 



About 10 mm. long, with a delicate median line on clypeus 1 



Much larger; about 13 mm. long, anterior wing 9.5 mm.; no trace of a line on 

 clypeus ; anterior margin of pleura below transverse band hairy ; sides of 

 front above with a small punctureless area, but it is not highly polished. 

 (Both sexes, the male the type, at flowers of Cirsium acaulescens, Floris- 

 sant, Colo., July 29, collected by S. A. Rohwer ; also a female collected 

 by W. Porter near San Ignacio, New Mexico) . .grandior new subspecies. 

 1. Anterior margin of pleura below the transverse band without hairs ; upper 

 part of front at sides without shining spaces (Illinois) ... .helianthi Rob. 

 Anterior margin of pleura below the transverse band broadly hairy ; upper 

 part of front on each side with a smooth polished space. 



pacificus new subspecies. 



Melissodes grindelise Ckll. Females ; one at Grindelia. 



Anthophora montana Cresson. Females; one at Monarda (W. 

 P. C). 



Anthophora smithii Cresson. 1 J\ at Monarda (W. P. C). 



Anthidium emarginatum Say. Both sexes at Phacelia, abundant 

 (W. P. C). 



Anthidium porterae Ckll. 1 J, Aug. 27. 



Osmia fulgida Cresson. Females common at Phacelia (W. P. C). 



Osmia armaticeps Cresson. One female at Phacelia, Aug. 26 (W. 

 P. C). 



Osmia wardiana Ckll. One female at Phacelia, Aug. 26 (W. P. C). 



Osmia copelandica Ckll. Four females at Phacelia, Aug. 26 (W. 

 P. C). 



Monumetha albifrons Kirby. One female at Phacelia, Aug. 26 

 (W. P. C). 



Bombus juxtus Cresson. Workers at Phacelia and Helianthus 

 lenticularis. 



Bombus bifarius Cresson. Worker at Heliomeris, Aug. 26. 



On the way to and from Peaceful Valley, we had occasion to spend 

 a few hours at Puzzler, alt. 8,700 feet. The bees caught here were 

 Anthidium tenuiflorse Ckll., Melissodes grindeliae Ckll., Megachile rela- 

 tiva Cresson, and a few others not yet examined. 



