NO. 1717. SOME BEES FROM THE WEST lyDTES—COCKERELL. 491 



marginata it is fulvous; but in inscatoria it is black. The tarsi of 

 hingJiami are black, of nigromarginata (male) more or less testaceous, 

 as also in piscatoria. The fish-tail structure of hingliami is covered 

 with dark brown hair. 



Type-specimen.— Qui. No. 12868, U.S.N.M. 



3. Group OXYSTOGLOSSI. 



In this group the hind spurs appear simple under a lens ; with a 

 compound microscope they are seen, in the species before me, to be 

 minutely serrate. This is the dominant and characteristic group of 

 the West Indies. 



AUGOCHLORA VINCENTANA, new species. 



Female. — Length about 5^ to 6 mm., brilliant bluish-green, varying 

 to almost entirely blue; head and thorax minutely and densely 

 punctured, with short but rather abundant pubescence, w^hite on 

 cheeks and pleura, pale yellowish dorsally; sides of face with hoary 

 white pubescence, contrasting with the convex little-hairy supracly- 

 peal region, which also is yellowish-green, the adjacent parts on 

 each side being bluish-green; head rather large; eyes very deeply 

 emarginate; antennse dark, or flagellum dull red beneath; lateral 

 ocelli tilted, so that seen from above they appear oval; clypeus 

 rather densely punctured, its lower margin broadly blackened; 

 mandibles ferruginous, blackened at apex and base, and with a 

 small inner tooth; metathorax shining, the basal area with extremely 

 fine longitudinal striae, bordered behind by a shining rim; with a 

 compound microscope it can be seen that these striae are vermiform 

 and irregular except laterally, that the shining rim has an extremely 

 delicate reticulation, and that the much bluer posterior part of 

 metathorax is quite closely punctured, the punctures of very different 

 sizes; scutellum densely punctured like the meso thorax; tegulse 

 shining rufopiceous, paUid exteriorly in front; wings reddish-hyaline, 

 stigma and nervures dark bro\\ni; second submarginal cell not espe- 

 cially narrow, receiving the first recurrent nervure very near its apex; 

 knees, tibiae, and tarsi clear ferruginous, with yellowish-white hair; 

 femora variable from nearly all black or fuscous to nearly all ferru- 

 ginous; hind coxae blue-green; hind spur microscopically serrate, 

 the teeth pale; abdomen shining, very feebly sculptured, the hind 

 margins of the segments very narrowly blackish; no vibrissae; at 

 extreme base of second segment there is a minute fringe of white 

 cilia; venter piceous, the hind margins of the segments narrowly 

 testaceous. 



Male. — Similar in most respects to the female; face very greatly 

 narrowed below; antennae long, flagellum crenulate, pale reddish 

 beneath; lower edge of clypeus narrowly, and labrum, pale yellowish 



