

wings, as in the rest of the genus, embrowned with a white spot near the 

 tip ; thighs black at the base on the under side ; first segment of the 

 abdomen black at the base, and, with the second and third, brown at the 

 apex. 



This is the only American Au^Niada I ever saw, and Fabricius describes 

 none from that country. It comes near Nomada ntjicoruis and striata, but 

 it has only a single black stripe on the thorax. 



[Dr. Packard states tiiat these Cuckoo-bees, the Nomada, are very 

 numerous in America. ] 



[270. j I- AMI I. Y CHELOSTO.N[IDAE. 



374. Chelosto.ma aluifrun.^ Kirby. — Length of body 4I/2 lines. A 

 single specimen taken in Lat. 05^ 



^ . — Body black, thickly punctured. Mouth bearded with white ; 

 mandibles carinated above, armed with two strong terminal teeth ; nose 

 square, flat, clothed with decumbent silver pile ; antennje filiform ; scape 

 black ; the other joints are rufo-piceous underneath ; trunk very hirsute 

 with white or subcinercous hairs : wings a little embrowned, with black 

 veins and base-covers ; legs hairy ; abdomen subcylindrical, hirsute with 

 black hairs, incurved with the apex of the four intermediate segments 

 fringed with white hairs ; anal joint with a concavity above, obtuse ; last 

 ventral segment (orcipate, rufo-j.iceous 



FAMILY MEGACHILID.K. 



375. Megachilk MARiiiMA Stfp/u'us. — Length of body 7 lines. 



[27 1. 1 Body black, pubescent, thickly and mii^^tely punctured. 

 Mandibles very large, triangular, protended, not crossing each other, 

 armed with four terminal teeth ; face between the eyes thickly clothed 

 with brown hairs, which grow tawn/ towards the mouth ; antennae 

 filiform ; back of the trunk clothed with brown hairs less thickly in the 

 disk ; wings a little enibrov/ned, especially at the apex ; nervures dusky ; 

 base-covers piceous ; legs hairy with pale hairs ; abdomen subovate with 

 the three last segments fringed with pale hairs intermixed with black ; the 

 ventral hairs are tawny, paler towards the base, and darker towards the 

 apex. 



