127 



color on the middle femur and tibia. Wings smoky, with brownish cloudings 

 along veins. Venter of abdomen black. Hairs on first tergite, and on sides 

 of second and sometimes third, mostly black. Hairs on eighth tergite black; 

 rest reddish yellow. 



Through the kindness of Mr. C. W. Johnson, seven specimens 

 of this species were loaned for study. They fall close to Laphria 

 sericea Say and are undoubtedly the same as the individual 

 mentioned by McAtee (Ohio Journal of Science, vol. 19, p. 151, 

 1918), under Laphria sericea. Here he states, "A female speci- 

 men from White Mts., VI? [N. H.], Geo. Dimmock (M. C. Z.) 

 which is referred to here differs in having the thoracic dorsum 

 clothed with pale yellowish pile." The male, furthermore, 

 differs quite markedly in the conformation of the genitalia. Both 

 sexes differ from sericea in having the wings darker, with dark- 

 brown cloudings along veins, and the hair on the first tergite of 

 the abdomen and on the sides of the second and, in some speci- 

 mens, the third, mostly black. 



Text-fig. 1. Laphria sericea, lateral aspect of male terminalia. 

 Text-fig. 2. Laphria sericea, dorsal aspect of left forceps. 

 Text-fig. 3. Laphria altitudinum, lateral aspect of male terminalia. 

 Text-fig. 4. Laphria altitudinum, dorsal aspect of left forceps. 



The holotype, Bar Harbor, Maine, June 16, 1922 (C. W. 

 Johnson), allotype, Mt. Washington, New Hampshire, July 30 

 (F. W. Dodge); and two paratypes, Mt. Washington, New 

 Hampshire, June 15 and July 4, are in the collection of the Boston 

 Society of Natural History; one paratype, Tear Lake, Essex Co., 

 New York, July 20, is in the collection of Dr. J. Bequaert, one 

 in the U. S. National Museum, and one in the collection of 

 C. W. Johnson. 



