AMERICAN HYMENOPTERA. 119 



^legachile Palmeri.— 9-— Black, entirely clothed with a dense bright 

 fulvo-ferruginous pubescence, slightly mixed with black on vertex; mandibles 

 ■coarsely rugose; wings margined at apex with fuscous; tarsi ferruginous, basal 

 Joint broad; abdomen finely punctured, apical margins of the segments above 

 fringed with a dense fulvous pubescence; ventral scopa dense and fulvous. 

 Length .55 — .65 inch. 



% . — Pubescence more dense and longer, that on face golden and that on 

 vertex and thorax above tinged with fuscous; anterior coxae each with a long 

 curved black spine, their femora fringed beneath with a long dense fulvous 

 pubescence, their tarsi yellowish, dilated, concave and margined with dusky 

 within, and fringed beneath with a long white pubescence, at base above a 

 lung hollow process, obtusely pointed, sinuate and honey-yellow at tip, clothed 

 at base with golden pubescence; sixth segment of abdomen excavated, the tip 

 notched and coarsely serrate; apical segment with a short blunt central tooth. 

 Length .55 inch. 



Ilab. — Guadalupe Island, situate in the Pacific Ocean about one hun- 

 dred miles westward of the coast of the peninsula of Lower California. 

 Five specimens, collected by Dr. Edward Palmer. A beautiful species, 

 the pubescence being dense and bright fulvo-ferruginous. 



^legachile azteca. — 9- — Black; face and cheeks clothed with pale 

 pubescence, slightly mixed with black, on vertex it is fulvous; thorax above 

 with short dense fulvous pubescence, on the sides and beneath it is griseous; 

 tegulee fulvous; wings yellowish-hyaline, faintly dusky on apical margin; 

 legs with short pubescence, black on four posterior tarsi above and yellowish 

 beneath, basal joint broad; abdomen with long fulvous pubescence on basal 

 segment, the apical margin of the segments fringed with bright yellow pubes- 

 cence, apical segment pale subpruinose, with scattered black hairs; ventral 

 scopa whitish except on two apical segments where it is black. Length 

 .50 — .55 inch. 



% . — Smaller and narrower than 9 > with the pubescence on face and clypeus 

 dense and golden; legs pale ferruginous; anterior coxse each with a long black 

 spine, their femora lineate with dusky within, their tarsi whitish, dilated, 

 fringed beneath with long pale pubescence, tipped with fuscous, at base above 

 a long obtusely pointed process, hollowed out on the inside, second and third 

 joints also prolonged at tip above, the former having a shining black spot on 

 the inside; intermediate and posterior coxae and their femora above and be- 

 hind blackish, their tarsi slender; abdomen sericeous, with longer pubescence 

 than in 9; ^^^ sides parallel, sixth segment excavated, the apical margin with 

 two stout obtuse teeth ; venter shining black, the segments narrowly margined 

 at apex with white. Length .45 inch. 



Hab. — Mexico, (Sumichrast). Ten specimens. 



Megachile Sayi.— % . — Form elongate, rather narrow, parallel, the head, 

 thorax and abdomen being about the same width throughout; black, finely 

 and very densely punctured ; face and clypeus with long dense yellowish-white 

 pubescence, which is sparing on vertex and short and white on cheeks; thorax 

 with long dense white pubescence, except on mesothorax where it is short and 

 mixed with black; tegulse pale brown; wings dusky on apical margin, darker 

 at tip of marginal cell; legs brown-ferruginous or black, clothed with snow- 



