NO. 1852. BEES OF THE GENUS NOBIADA—COCKERELL. 227 



*armatella Cockerell, 1903. Canada. Tab. 3. 



Type.— Cat. No. 13174, U.S.N.M. 

 *articulata Smith, 1854. "North America" (Doubleday). Tab. 12. (As Centrias 

 americanus.) 



Notes on type; Trans. Amer. Ent. Soc, vol. 31, p. 312. 



This has been erroneously known as N. americana. 

 *ashmeadi Cockerell, 1903. Los Angeles County, California (Coquillett). Tab. 4. 



Type.—Gat. No. 13173, U.S.N.M. 

 astori Cockerell, 1903. Corvallis, Oregon, May and June (Cordley). Tab. 6. 



Possibly a variety of N. ultimu. 

 atrofrontata Cockerell, 1903. S. California. Tab. 4. 



Allied to N. ultima, 

 aztecormn Cockerell, 1903. Amecameca, Mexico, September (Barrett). 



Female about 11 mm.; black with bright yellow markings; tegulse bright ferru- 

 ginous; legs black and red. 

 banksi Cockerell, 1907. Glencarlyn, Virginia, October (N. Banks).' 

 *belfragei Cresson, 1878. Texas (G. W. Belfrage). 

 *belfragei xanthogaster Cockerell, 1911. Texas (G. W. Belfrage). 



Type.— Cat. No. 13427, U.S.N.M. 

 *bella Cresson, 1863. Massachusetts; Connecticut. Tab. 1, 6, 9. Subg. Gnathias. 



Distribution; Proc. Acad. Nat. Sci. Phila., 1903, p. 601. 

 *bella callura Cockerell, 1911. West Cliff, Colorado (Cockerell). Subg. Gnathias. 



Type.— Cat. No. 13437, U.S.N.M. 

 *bethnnei Cockerell, 1903. Canada. Tab. 3. 



Table contrasting bethimei with armatella; Proc. Acad. Nat. Sci. Phila., 1903, p. 607. 



Type.— Cat. No. 13159, U.S.N.M. 

 beulahensis Cockerell, 1903. Beulah, New Mexico, August (Cockerell). Tab. 1. 



Allied to N. intcrrupteUa. 

 hifurcata Cockerell, 1903. S. California. Tab. 4. 



Allied to N. sayi. 

 bisignata Say, 1824. 



Robertson (1898) stated that this could not be identified, as he knew three species 

 agreeing with Say's description. 

 6orea?is Zetterstedt, 1838. Europe. 



Description of specimen from Nova Scotia; Trans. Amer. Ent. Soc, vol. 31, p. 311. 

 californix Cockerell, 1903. S. California. Tab. 4. 



Allied to N. erythraea. 

 *carolinse Cockerell, 1903. North Carolina. Tab. 9. 



Very close to N. cuneata. 

 ceanothi Cockerell, 1907. Glencarlyn, Virginia (N. Banks). 



Allied to N.florilega. Visits Ceanothus in June. 

 citrina Cresson, 1878. California (Henry Edwards). Tab. 5. 

 citrina rufula Cockerell, 1903. Grangeville, Idaho. Tab. 5. 

 *civilis Cresson, 1878. Colorado (Ridings, Morrison). Tab. 1, 5. 



Female ; Entomologist, 1909, p. 93. 

 civilis spokanensis Cockerell, 1910. Spokane, Washington (W. M. Mann). Subg. 



Xanthidium. 

 clarkii Cockerell, 1903. Corvallis, Oregon, April 6 (Cordley). Tab. 6. 

 *collinsiana Cockerell, 1905. Fort Collins, Colorado (S. A. Johnson). Tab. 1, 11. 

 coloradella Cockerell, 1905. Fort Collins, Colorado. Tab. 1. 

 coloradensis Cockerell, 1903. Montrose, Colorado (Gillette). Tab. 1, 3. 



Male, and history of type; Bull. 94, Colo. Agric. Exp. Sta., p. 84. 

 *coquilletti Cockerell, 1903. Santa Clara County, California (Coquillett). Tab. 4. 



Resembles N. modocorum. 



Type.— Cat. No. 13186, U.S.N.M. 



