4 
SECOND YAEKAND 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. 
Hah. —Taken in May, in the neighbourhood of Yarkand. 
7. Megachile fhlva. 
Eemina.— M. atra, tliorace ahdomineque Mrsutis fulvo-aureis, pedibus ferrugineis. 
Black; the mandibles, scape of antennse, and the legs ferruginous; the coxae, trochanters, 
and tips of the mandibles, black; densely covered with 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 liavo-hyaline towards their base, beyond 
which they are fuscous; the nervm’es ferruginous at the base of the wings, beyond the stigma 
they are rufo-fuscous; the tegulae ferruginous. Eemale, length 7^ lines. 
Taken on the Yarkand Expedition; the precise locality not known.^ 
8. Megachile dentiventhis. 
Mas.— M. pallide piihescens ; abdominis apice denticulato; tarsis rufis. 
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 white 
pubescence; the anterior femora and tibiae in front, and all the tarsi bright ferruginous; 
the anterior coxae 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 
5 lines. 
Hab. —Neighbourhood of Yarkand. Taken in May. 
9. Megachilb serhata. 
Mas.^— M. pallidepubescens, abdomine oblongo, ano inflexo, spinuloso. 
Black; the face with pale fulvous pubescence, that on the cheeks cinereous; the 
antennge 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 hyahne, 
the anterior pair slightly clouded at the apex, the nervures ferruginous, the tegulae 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. 
Hab. —Neighbourhood of Yarkand. Taken in May. 
1 Probably, like some other specimens without labels, this may have been from the hills south of Yarkand. 
