130 E. T. CRESSON. 



the two basal segments with black pubescence, the apical segments with dense 

 golden pubescence; lateral apical margin of second segment and apical margin 

 of third and fourth segments golden-yellow; apex of sixth segment slightly 

 notched medially. Length .35 inch. 



Hah. — 'Mexico, (Sumichrast). Two specimens. 



megachile ciiicltimeca. — 9 • — Form narrow, black, subopaque, densely 

 and finely punctured; sides of face, cheeks, narrow line on anterior margin of 

 mesothorax, spot on each side behind tegulse, line behind scutellum, oblique 

 line on sides of metathorax and the tubercles, clothed with dense white pubes- 

 cence; wings faintly dusky on apical margin and fuliginous on apical costal 

 margin; legs with pale pubescence, basal joint of posterior tarsi broad; abdo- 

 men with a narrow pale fringe on apex of segments 1 — 5, apical segment with 

 dense pale pile; ventral scopa yellowish- white. Length .38 — .42 inch. 

 Hah. — Mexico, (Sumichrast), Two specimens. 



Megacliile coelioxoides. — % . — Black, rather shining, finely not closely 

 punctured ; head large, broad ; face and apex of clypeus with long dense yellow 

 pubescence, that on base of clypeus black, that on cheeks whitish; mandibles, 

 tegulsB and legs fulvo- ferruginous; mesothorax and scutellum with sparse black 

 pubescence; a narrow line on anterior margin of mesothorax, a spot on each 

 side behind tegulse, and a line behind scutellum extending on each side behind 

 wings, of dense white pubescence; wings fuliginous, black on costal margin; 

 coxae, trochanters and base of femora more or less black, anterior coxse each 

 with a long black spine, all the tarsi slender; abdomen narrow, smooth, shin- 

 ing, sparsely punctured, lateral apical margin of the segments narrowly fringed 

 with white, sixth segment subrugose, clothed with black hair, straight, not at 

 all incurved, the apex truncate. Length .40 inch. 



Hah. — Mexico, (Sumichrast). One specimen. This has much the 

 general appearance of a Codloxys. 



Megacltile zaptlaua. — J. — Form narrow, elongate, opaque black, very 

 densely and minutely punctured; sides of face, of clypeus and the cheeks 

 clothed with dense white pubescence, that on middle of clypeus, between 

 antennse and on vertex sparse and black; thorax with whitish pubescence, 

 very short and sparse on mesothorax, slightly mixed with black on scutellum; 

 line over tegulse, line at base of scutellum, and oblique line on sides of meta- 

 thorax of dense white pubescence; wings dusky at tips and fuliginous on 

 apical costal margin; legs with short pale pubescence, yellow on tarsi beneath; 

 abdomen elongate narrow, sides parallel, sides of first segment clothed with 

 whitish pubescence, and segments 2 — 5 narrowly fringed at apex with white, 

 elsewhere the segments above have a scattering black pubescence; apical seg- 

 ment with pale pile; ventral scopa yellowish-white, apical segment with short 

 black hair. Length .45 — .55 inch. 



Hah. — Mexico, (Sumichrast). Five specimens. 



9Iegachile abacula.— J. — Form narrow, parallel, black, subopaque, 

 closely and strongly punctured; sides of face, cheeks, patch beneath tegulse, 

 spot above and behind tegulse, and oblique line on each side of metathorax, of 

 dense white pubescence; on vertex, mesothorax and scutellum the pubescence 

 is sparse and black, and on pleura and beneath it is white; tegulse brownish; 

 wings faintly dusky on apical margin; legs clothed with pale pubescence; 



