218 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.55. 



terior middle ; mesothorax and scutellum dull, the disk of mesothorax 

 a little shining, with well-separated punctures; hair of mesothorax 

 very short and black (a little pale in front), of scutellum long and 

 black, but a broad dull white band in scutello-mesothoracic suture, 

 and a broad pale ochreous hair band on each side over tegula ; a pale 

 hair band in suture between scutella, and mesothorax with large tufts 

 of white hair at sides, but in middle with mixed black and white; 

 pleura with black hair, but tubercles marked by a dense pale yellow 

 tuft; tegulae chestnut color; wings dilute brownish; legs ordinary, 

 anterior tarsi short, hind basitarsi broadened ; abdomen shining, with 

 fine punctures, the segments with very thin hardly noticeable w^hite 

 hair bands, best developed on 1 to 3 ; sixth segment straight in pro- 

 file, with erect black hair ; ventral scopa w'hite, black on last segment 

 and apex of penultimate. 



Mexico (Baker collection, 2320) . Related to 31. hreviuscula Smith ; 

 recognizable especially by the black-haired pleura. 



Type.— C^t. No. 21688, U.S.N.M. 



MEGACHILE TEXANA Cresson. 



Mexico (Baker collection, 2320). 



MEGACHILE MENDOZANA Cockerell (RHINOCEROS Friese). 



Female. — Carcarana, Argentina (Bruner, 23). 



MEGACHILE LENTICULA Vachal. 



'Female. — Palcazu, Peru (Rosenberg). One specimen, certainly 

 not a different species, is peculiar for the polished scutellum, the 

 upper surface almost impunctate, and the hind part of disk of meso- 

 thorax with widely separated punctures. 



MEGACHILE PORRECTULA Cockerell (ACUTA Vachal). 



il/«Ze.— Matucana, Peru, Jan. 30, 1913 (C. H, T. Townsend). 



MEGACHILE EULALIAE, new species. 



Fem,ale. — Length : 11.5-12 mm., robust, intense black, with black 

 hair. On the cheeks, behind the eyes, is a band of creamy white or 

 pale yellowish hair, not always present; the anterior and middle 

 tibiae are clothed posteriorly, especially toward the apex, with hair 

 which shines pale yellowish in certain lights; the hind femora and 

 tibiae are covered posteriorly with very fine short pale grayish-yellow 

 hair; hair on inner side of tarsi reddish. First two joints of labial 

 palpi about equal; mandibles broad, quadridentate ; clypeus closely 

 and very strongly punctured, with no smooth line; the lower margin 

 irregular, thickened, and somewhat elevated; supraclypeal area 

 strongly punctured, with a m.edian impunctate space; antennae en- 

 tirely dark; front densely granular, dull; mesothorax and scutellum 

 dull, closely punctured, the punctures on disk of mesothorax pos- 



