338 T. D. A. COCKKKELL. 



348. Bombus dubius Cr., near Swift Creek. 



349. " nevadensis Cr., near Swift Creek. Described in the Wheeler 



Eeport from Nevada, Arizona and New Mexico. 



350. Bombus appositus Cr., near Swift Creek. 



351. " mixtus Cr., near Swift Creek. 



352. " perplexus var. hudsonicus Cr., Cusack Ranch, Aug. 3. 



353. " borealis Kirby, Old Beddoes Ranch, Aug. 9, at flowers of Rud- 



beckio lachiiata. 



354. Bombus rufocinctus ■■ Cr. West Cliff, May 25; Aug. 19, at flowers of Gyin- 



nolomia muJtiflora. Also high-alpine. 

 Of the nine Bombi, sylvicola, ternarius, perplexus and borealis, are boreal : 

 nevadensis and appositus belong to the Western States: rufocinctus 

 and mixtus are only known from Colorado ; and duhixis is from Kansas 

 and Colorado. The case of C. rufocinctus is very remarkable, as it is 

 an abundant and very distinct species, not easily overlooked. It has 

 also a Volucella-m\m\Q,. Yet Mr. Fo.x tells me that it is still only 

 known from Colorado. 



ANTHOPHORIN^. 



355. Anthophora bomboides Kirby. 



356. Diadasia australis (^r., near Swift Creek. 

 3.57. " enavata Cr. West Cliff. July 29. 



358. Melissodes menuacha Cr. West Cliff, May 24 ; has blue-gray eyes. 



359. Habropoda sp. West Cliff, May 23, at Thermopsis. A large dark bee with 



face partly light yellow. 



360. Eucera sp. West Cliff, May 25; dark brown, with partly yellow face. 



Anth. bomhoides is boreal. Diadasia Patt. has three species, all found in 

 Colorado. D. australis is also in Texas, and D. enavata in Kansas and 

 Texas. Melissodes has fourteen species in Colorado. 31. menuacha is 

 widely distributed in the West. Habropoda is widely distributed in 

 the United States, with few species; two occur in Colorado. Eucera, 

 a genus also found in Europe, seems to have but one described species 

 in the United States. 



MEGACHILIN^. 



361. Megachile perbrevis Cr. Willow Creek. 



362. '■ bucephala Sm. West Cliff. 



363. Anthidium parvum Cr., near Swift Creek. 



364. Monumetha borealis Cr. West Cliff, May 24; has blue-gray eyes. 



365. Osmia densa Cr. West Cliff, May 25. 



366. " Integra Ci'. West Cliff, May 19, two specimens. 



367. " juxtaCr.? West Cliff, May 19. 



368. " marginipennis Cr., near Swift Creek, obtained from pupa cells 



found. 



■•■■ I had failed to notice that this species is recorded from near Ottawa, Canada, 

 by J. A. Guignard (Can. Ent. 1886, p. 68). This record is important from our 

 point of view, as it indicates that the species is of preglacial origin. It should 

 be looked for on the mountains of New England. — T. D. A. C. — Nov. 8. 



