18G5.] 



17: 



Megachile Poeyi, Guer. 



Megachile Poeyi, Guer. Icon. Reg. Anim. iii, p. 450; LaSagra's Hist. Cuba, Ins. 

 p. 778, pi. 19, fig. 10. 



Collection. — Ent. Soc. Philad. Three 9 , three % specimens. 



Prof. Poey informs me that he has -'found the nest of this species. 

 formed of cuttings of leaves, under stones. It has for its enemy the 

 Leucospis Poeyi Guer." 



Megachile singularis, n. sp. 



Black; head and thorax densely clothed with ochraceous pubescence; wings 

 fuseo-hyaline; tibise and tarsi yellowish-fuscous, the anterior tarsi pale and 

 broadly dilated; abdomen narrower than the thorax, elongate-subquadrate. 

 the apex bidentate. 



Male. — Black, very closely and finely punctured ; head large, trans- 

 verse, rather wider than the thorax, the face densely clothed with long 

 ochraceous pubescence, pale on the clypeus, the pubescence on the 

 vertex, occiput and cheeks rather short and tinged with fuscous ; eyes 

 large and elongate ; mandibles flattened, subtriangular, being subacute 

 at tip and broadly dilated beneath about the middle; on the lower mar- 

 gin of the cheeks the pubescence is long and pale ochraceous; antennae 

 about as long as the width of the head, black, filiform, the apical joint 

 dilated and compressed. Thorax above densely clothed with dull och- 

 raceous pubescence, somewhat mixed with black on the disk ; on the 

 pleura and the metathorax behind the pubescence is sparse especially 

 on the latter; tegulse piceous, pubescent in front. Wings fusco-h va- 

 line, the apex, especially abcut the marginal cell, fuliginous; posterior 

 pair clearer; nervures dull ferruginous. Legs pubescent, shining; 

 coxse, trochanters, anterior femora above and the four posterior femora 

 entirely, piceous-black ; the anterior femora beneath, and all the tibia", 

 dull yellowish-fuscous; the four posterior tarsi paler, and clothed with 

 golden-yellow pubescence ; anterior tarsi yellowish-white, the three 

 basal joints broadly and obliquely dilated, and having behind a pale, 

 thick fringe, much longer and yellowish on the basal joint; apical joint 

 fuscous; intermediate tarsi very long and slender, being three times as 

 long as their tibiae, gradually attenuated to the tip, the terminal joint 

 nearly as long as the first joint, with the claws very long, slender, deeply 

 cleft, and very acute; posterior tarsi not much longer than their tibiae, 

 stout, the basal joint dilated, the other joints short and subacute, the 

 claws stout and cleft. Abdomen elongate-subquadrate, about as long 

 as the head and thorax and not so wide as the latter, subdepressed, 

 sides parallel, apical and basal margins of the segments depressed, the 

 anterior face of the first segment deeply concave; dorsal segments 



