316 p. CAMERON. 



the nervures are dark piceous. Legs black ; the hair on the femora and tihise is 

 long and pale fulvous; on the four front tarsi it is bright rufous; on the hinder 

 black, mixed with rufous. The pronotum is sharply raised behind and is clearly 

 separated from the mesonotum, there being a deep furrow between the two; the 

 calearia are rufous; the ventral surface has the basal two segments covered with 

 long pale hair, the others more thickly with shorter, stiffer black pubescence. 

 The dorsal surface of the abdomen is devoid of iridescence. 



Hab. — Santa Fe Mountains, New Mexico. 



This species (which looks exactly like a Tachytes) come nearest to 

 0. vagans Fox from Texas ; the two may be separated thus : 



Eyes nearly touching on the vertex, being separated there by about the length 

 of the ISth antennal joint, the pronotum above emarginate medially. 



vagans. 

 Eyes widely separated on the vertex, being there separated by twice the length 

 of the ISth antennal joint ; the pronotum not emarginate medially. 



tanhytirormis. 



Osmia Foxi sp. nov. 



Metallic-green, mixed with blue; the vertex and mesonotum darker and with 

 brassy tints ; the basal four segments of the abdomen with their apices distinctly 

 banded with violet; the wings clear hyaline; the stigma and nervures fuscous- 

 black. % . Long: 8 mm. 



Antennse black; the scape slightly coppery and closely punctured. Head 

 closely, distinctly and uniformly punctured ; the lower part of the front, the face 

 and lower part of the clypeus sparsely covered with long white hair; the sides 

 of the clypeus are dark violet, mixed with golden tints; the apex is dark violet. 

 Mandibles black ; the base blue and closely punctured ; the rest of them to near 

 the apex more strongly and not so closely punctured. The mesonotum and scu- 

 tellum are almost glabrous; the pleura? and sides of the metauotum covered, but 

 not very thickly, with long white hair; there is a narrow line on the basal half 

 of the mesonotum in the centre and a shorter one on the base of the scutellum. 

 The area on the median segment is closely punctured, and at the base is irregu- 

 larly striated ; the apical furrow is smooth, dark violet, wide and deep; the rest 

 of the segment is irregularly punctured. Tegula> at the base closely punctured, 

 blue, green and golden ; the rest sparsely punctured and for the greater part 

 dark violet with golden tints. Legs colored like the body and largely marked 

 with brassy tints; the tarsi are blackish and below are thickly covered with 

 rufous pubescence. Abdomen closely punctured, but not so strongly as the 

 thorax; the purple apical bands are smooth and depressed. The apical segment 

 is depressed in the centre, through the base and apex having an oblique slope ; 

 the apex is darker colored than the base and is roundly incised in the middle; 

 the teeth are bluntly rounded ; the sides, at the apex, are smooth, impunctate 

 and blue. The apex of the clypeus is broadly rounded. 



Hab. — Santa Fe Mountains, New Mexico. 



Comes near to 0. texana Cresson, and 0. subfasciata Cresson, but 

 cannot well be confounded with either, as it may be readily separ- 

 ated by the clear hyaline wings and by the legs not being black. 



