HYMENOPTERA. 
3 
tlie Azores, in Madeira, Cape de Verd Islands, and in Egypt; a few have occurred in Northern 
India, China, and Japan. In Australia and New Zealand they appear to he very rare ; 
no species has, to my knowledge, been found in South America, but they are found in Mexico, 
and are plentiful in North America. 
All the species appear to construct their nests in tunnels excavated in the ground. 
Family — A PIDjE. 
5. OSMIA LABOBIOSA, Eig. 6. 
Eemina. — 0. nigra, pube fulva vestita ; abdominis segmentis rufo-margmatis ; pedibus 
ferrugineis. 
Black ; head shining and finely punctured ; the scape of the antennse, the anterior 
margin of the clypeus, and the mandibles, ferruginous ; the latter tridentate, the teeth black ; 
the face and the vertex with fulvous pubescence. The thorax has a fulvous pubescence, which 
is usually more or less abraded above ; the mesothorax closely punctured, more strongly so 
than the head ; the legs bright ferruginous, with the coxae black ; wings fulvo-hyaline at 
their base, and fuscous beyond the base of the first submarginal cell ; the tcgulae and ncrvures 
at the base of the 'wings ferruginous, becoming nigro-fuscous beyond. Abdomen closely 
punctured ; the basal segment above, and the apical margins of the second and third segments 
broadly ferruginous; all the segments fringed with fulvous pubescence; beneath, densely 
clothed with fulvous pubescence. Eemale, length 4J lines. 
JIab. — Taken in May, in the neighbourhood of Yarkand. 
This genus is numerous in species, but it appears only to be found, in any abundance, 
in temperate climates ; nearly one hundred species are known, about half of these are European ; 
several are found in North Africa, and they occur plentifully in North America. 
6. Megachile hescindus. 
Eemina. — M. pallide pubescens, abdomine subcordato, segmentorum marginibus pallide 
fulvis, subtus fulvo-villosis. 
Black ; the face covered with fulvous pubescence, that on the cheeks paler ; the man- 
dibles with three ferruginous blunt teeth. Thorax ; the pubescence on the disk short and 
thin, at the sides it is more dense, long and pale fulvous, that on the legs is very pale and 
glittering above ; on the basal joint of the tarsi beneath it is bright fulvous ; the claws of 
the tarsi ferruginous; wings sub-hyaline, the nervures fusco-ferruginous. Abdomen; a 
little pale fulvous pubescence on the apical margin of the basal segment ; on the following 
segments it is fulvous, and very dense and bright on the segments beneath. Eemale, length 
6 lines. 
Male. — Black, with the anterior legs ferruginous ; their coxae armed w r ith an acute black 
tooth ; a dark stain on the femora and tibiae behind, the tarsi dilated and fringed behind with 
very pale curled pubescence. The face covered with dense yellowish white pubescence ; 
on the thorax above it is thinner, shorter and brighter ; wings hyaline, with a faint cloud at 
their apical margin ; the metathorax has a cinereous pubescence. Abdomen ; the segments 
