230 ASHMEAD [ 22 4] 



MESOLEIUS ALEUTIANUS Cresson. 



Mesoleius aleutiamis CRESSON, Proc. Acad. Nat. Sci. Phila., p. 371, <f\ 1878. 

 CRESSON, Syn. Hym. N. Am., p. 209, 1887. 



Type in collection of the American Entomological Society. From 

 Aleutian Islands. 



I have not recognized this species nor have I seen the type. Mr. 

 Davis says it belongs to the genus Lampronotiis Haliday, but the 

 description alone shows that such cannot possibly be the case. It may, 

 however, represent a male in some other genus in the tribe Lissonotini. 



Tribe BASS INI. 

 Genus Bassus Gravenhorst. 



BASSUS PULCHRIPES Provancher. 



Bassus pulchripes PROVANCHER, Fn. du Can. Hym., p. 428, 1883. CRESSON, 

 Syn. Hym. N. Am., p. 214, 1887. DAVIS, Trans. Am. Ent. Soc., xxil, 

 p. 20, 9 (j\ 1895. 



Type in Parliament Building, Quebec, Canada. From Muir Glacier. 

 One female specimen. This species is found in Canada, Colorado and 

 the White Mountains, New Hampshire. 



Genus Promethes Forster. 



PROMETHES UNICINCTUS sp. nov. 



Female, Length 5 mm. Black ; a median spot on the ridge just 

 below the insertion of the antennae, the mandibles, hind angles of pro- 

 notum, a line beneath tegulae, and a band at base of third abdominal 

 segment and apex laterally, lemon-yellow ; palpi, tegulae, apices of 

 front and middle coxae and trochanters, and the second joint of hind 

 trochanters yellowish- white ; coxae, except as noted, black ; rest of legs, 

 except the base of femora beneath, rufous. Wings hyaline, the stigma 

 and costal vein yellowish, the subcostal and internal veins brown. 

 Abdomen strongly compressed at apex, the basal segment rugulose, 

 the second striate, the following smooth and polished. 



Type. Cat. No. 5664, U. S. Nat. Museum. From Kukak Bay, 

 July 4. One specimen. 



Genus Bioblapsis Forster. 



BIOBLAPSIS TRICINCTA sp. nov. 



Male. Length 5.5 mm. Black ; anterior orbits to summit of eyes, 

 a rounded spot on middle of face, clypeus, mandibles, and three bands 



