138 AMERICAN HYMENOPTERA. 



sides ; hind femora entirely dark ; tibiae all dark. Hind tibiae with 

 their outer faces flat, or slightly convex, and very sparsely hairy on 

 their distal portions ; their fore and hind fringes short, but long enough 

 to form very weak corbiculse. Hind metatarsi with outer faces deeply 

 concaved ; without long fringes. 



Dimensions. — Length : queen, 16 mm. to 20 mm. ; worker, 12 mm. 

 to 15 mm. ; male, about 12 mm. Spread of wings : queen, 35 mm. to 

 42 mm. ; worker, 29 mm. to 34 mm. ; male, about 28 mm. Width of 

 abdomen at second segment: queen, 8 mm. to 9i mm. ; worker, h\ 

 mm. to 1\ mm. ; male, about 5i mm. 



Redescribed from four queens, three workers and one 

 male. 



Habitat. — Brazil (Constantia, Ypanema, Minas Geraes) 

 and Paraguay (Sapucay, Asuncion and San Bernadino). 

 The specimens before me came from Brazil and Paraguay. 

 Handlirsch (vide supra) records this species from Mexico, 

 but his record needs confirmation. 



This species is apparently allied to steindachneri and me- 

 dius. It seems to be comparatively constant in its characters. 

 The yellow pile is pale straw-color. 



Species of the Fraternus Group South of the 

 United States. 

 Bonibiis (Bonibias) niexicensis new species. 

 Bombjis ternarius (var. d.) Ant. Handlirsch, Ann. Naturh. Hofmus. 

 Wien., Ill, 1888, p. 230, 9 (misidentification). 

 " niexicensis Franklin, Trans. Amer. Ent. Soc, XXXVII, 1911, 

 p. 163, 9. 



Types. — Described from four cotype queens from Mexico, 

 of which one is deposited in the collection of the Massachu- 

 setts Agricultural College, and three in the collection of the 

 United States National Museum. 



Pile rather short and rather coarse. Malar space short. Head 

 mostly dark. Dorsum of thorax yelloiv, with a broad black ivteralar 

 band. Mesopleura mostly yellow. Dorsum of abdomen yellow, ferru- 

 q^inous and black. Wings rather light. Legs black. 



Queen. Head. — Short for its width. Face mostly black, but with a 

 faint sprinkling of short pale pile intermixed with the black hair on 

 the region around the bases of the antenna;. Occiput with mostly black 

 pile, but with an admixture of pale yellow hairs, especially on the very 

 hind margin. Sides of head behind eyes entirely dark. Malar space 



