NO. 2264. BEES IN THE NATIONAL MUSEUM. 3—COCEERELL. 191 



CENTRIS MERRILLAE, new specieB. 



Female. — Length about 14 mm., anterior wing 11. Similar to 0. 

 lanipes (Fabricius), but larger; pale hair of head and thorax white, 

 with a faint creamy tint on thorax above ; eyes light reddish ; yellow 

 clypeal spots elongated and oblique, so that the apical black area is 

 broadly triangular; flagellum only obscurely red beneath; wings 

 dilute fuliginous, quite dark; legs black; hind tibiae short, with 

 very long ochreous hair; hind basitarsi with very long hair, which 

 is pure black on inner side, and on outer shades into reddish-brown; 

 fourth abdominal segment thinly covered with black hair, sides of 

 fifth with white. Scape very short and stout, entirely black ; labrum 

 pale yellow, without spots, finely punctured, apex entire ; more than 

 basal half of mandibles yellow, apical part with a ferruginous band ; 

 vertex with black hair, but a crescent of light hair behind middle 

 ocellus; tegulae fuscous; middle tarsi with red hair, but a long white 

 fringe behind ; apical plate of abdomen narrow. 



Manaos, Brazil (Miss H. B, Merrill). Eelated to C. lanipes and 

 C. tarsata, but evidently distinct. 



Type.— Cat. No. 21655, U.S.N.M. 



CENTRIS PLUMIPES Smith. 



Near Para, Brazil (Miss H. B. Merrill). Rio Mate, Caura dis- 

 trict, Venezuela (Carriker). 



CENTRIS PERSONATA Smith. 



Near Para, Brazil (Miss H. B. Merrill) ; "on Aster," Aroa, Vene- 

 zuela (Carriker) ; Trinidad River, Panama, May 7, 1^11 (A. Busck). 



CENTRIS RUBELLA Smith. 



Female. — Rio Mato, Caura district, Venezuela, October, 1909 

 (M. A. Carriker). 



CENTRIS LILACINA, new species. 



Female. — Robust, length, about 21 mm. ; anterior wing, 14.6 mm. ; 

 black, with pale yellow face-nuxrkings, the abdomen entirely chest- 

 nut red with a strong violet or lilac tint; mandibles black, with 

 three strong teeth, the two outer yellowish ; labrum pale yellow, with 

 thin red hair; clypeus yellow, with a very large club-shaped mark, 

 the stem of which reaches the loAver margin; lateral face-marks 

 irregularly cuneiform, with a linear process above along orbit to 

 about level of antennae; scape with a yellow band in front; flagellum 

 entirely dark ; hair of vertex and front entirely rusty black, of cheeks 

 (except above) creamy white, some pale hair around antennae ; thorax 

 above with dense short dark gray hair, but on lower part of pleura 

 cream-colored; scutellum strongly bituberculate ; tegidae black; 



