70 PROCEEDINGS OF THE ACADEMY OF [189U. 



segment of abdomen paler; legs dark red, or black, the pubescence 

 of four posteriors entirely black, that of the anteriors brownish; 

 abdomen shining black, the apex of first, and the second to fourth 

 dorsals bare ; fifth dorsal as Avell as the second to fifth ventrals 

 fringed with black hairs; sixth segment with dark-brown pubes- 

 cence, the pygidium almost as in atriventris ; wings subhyaline. 

 Length 12 mm. 



Texas. Three specimens. This species is apparently quite close 

 to C. mexicana Smith, but in that species the Avings are described 

 as fuscous. C. subhyalina may subsequently prove to be the 

 female of C. lanosa Cress. 



Description of a New Species of Centris from the 

 Island op Trinidad, W. I. 

 Centris xylocopoides n. sp. 



?. — Deep black, clothed throughout with black pubescence; 

 space between eye and mandible reddish; eyes slightly diverging 

 above; clypeus medially flattened and impunctate, otherwise 

 strongly punctured ; labrum strongly punctured, covered with long 

 hairs, acuminate apically; second joint of flagellum about as long 

 as the third, fourth, fifth and half of sixth joints united; a small 

 bare spot on dorsulum medially and at base of scutellum ; abdomen 

 above only pubescent on apical segments, beneath on all segments 

 medially and apical margins of segments 4-6 ; pygidium trian- 

 gular, somewhat depressed, with a similarly shaped raised area 

 basally ; wings black, variegated with brilliant shades of blue, 

 green and purple. Length 28 mm. 



Island of Trinidad, West Indies. November, 1892. Two 

 specimens. The immense size and entirely black color remind one 

 of the species of Xylocopa. 



