4 
SECOND YARKAND MISSION. 
fringed with pale fulvous pubescence ; the margin of the apical segment emarginate ; the 
emargination denticulate. Length 6^ lines- In this species the head is a little wider than 
the thorax, and narrowed behind the eyes. 
Sab. — Taken in May, in the neighbourhood of Yarkand. 
7- Megachile fulva. 
Eemina. — 31. atra , thorace abdomineque hirsutis fulvo-aureis, pedibus ferrugineis. 
Black ; the mandibles, scape of antenna;, and the legs ferruginous ; the coxse, trochanters, 
and tips of the mandibles, black ; densely covered witli fulvous pubescence, sparingly so 
on the vertex and basal margins of the intermediate abdominal segments ; the pubescence 
on the legs is short and thin ; the anterior wings flavo-hyaline towards their base, beyond 
which they are fuscous ; the nervurcs ferruginous at the base of the wings, beyond the stigma 
they are rufo-fuscous ; the teg uhe ferruginous. Female, length 7i lines. 
Taken on the Yarkand Expedition ; the precise locality not known. 1 
8. Megachile dentiventris. 
Mas. — M. pallide pubescens ; abdominis apice denticulato ; tarsis rujis. 
Black ; the face densely covered with white pubescence, that on the cheeks is also white, 
but shorter and less dense ; on the vertex it is pale fulvous ; the mandibles stout and bidentate 
the teeth rufo-piceous, the apical one black at the tip. The thorax and legs with wdiite 
pubescence ; the anterior femora and tibiae in front, and all the tarsi bright ferruginous ; 
the anterior coxse armed with a stout spine ; wings hyaline, the anterior pair faintly clouded 
at their apical margin ; the nervures ferruginous ; the tegulae black. Abdomen ; the apical 
margins of the segments fringed with very pale fulvous- white pubescence; that at the 
sides, and beneath, is white ; the apical segment with four teeth on its margin. Male, length 
B lines. 
Sab.— Neighbourhood of Yarkand. Taken in May. 
9. Megachile sere at a. 
Mas. — 31. pallide pubescens, abdomine oblongo, ano injlexo , spinuloso. 
Black; the face with pale fulvous pubescence, that on the cheeks cinereous; the 
antennae fulvous beneath. Thorax clothed above with pale fulvous pubescence ; at the sides, 
beneath, and on the legs, it is cinereous ; the tarsi ferruginous, with the basal joint of the 
intermediate and posterior pairs, black above ; the anterior coxae dentate ; wings hyaline, 
the anterior pair slightly clouded at the apex, the nervures ferruginous, the teguke black- 
Abdomen oblong, obtuse at the apex ; the two basal segments with pale fulvous pubescence ; 
the apical margins of the segments fringed with pale pubescence ; the apical segment clothed 
with short pale pubescence, its margin serrated ; beneath, the apical segment is produced 
into a large triangular process, acute at its apex. Male. Length 5 lines.. 
Sab.— Neighbourhood of Yarkand. Taken in May. 
1 Probably, like some other specimens without labels, this may have been from the hills south of Yarkand. 
