362 HYMENOPTERA. 



pleurae are for the greater part ferruginous ; the middle thickly covered with silvery 

 hair; the metapleurae black, reticulated. The abdomen shorter than the head and 

 thorax united and broader than the thorax. The basal segment black above, ferru- 

 ginous at the sides, coarsely punctured ; covered with long white hair, the apex thickly 

 covered with a band of pale golden pubescence ; the segment becomes distinctly 

 dilated towards the apex. The second segment is deep black above; towards the 

 middle are two large marks of silvery pubescence, which extend to the sides and are 

 narrowed on the inner side. The third, fourth, and fifth segments are thickly covered 

 with bright silvery pubescence. The pygidium is finely punctured, the sides covered 

 with long pale hair. The basal ventral segment is red; the keel darker at the top, 

 its base and apex bluntly oblique ; the other ventral segments are also ferruginous ; 

 the second segment is strongly punctured and sparsely haired, the other segments 

 thickly covered with long pale fulvous hair. The legs ferruginous, covered with pale 

 fulvous hair ; the tibial spines long and black ; the calcaria white ; the tips of the 

 tarsal joints blackish. 



The following species agree in form and coloration with the group of S. sumichrasti 

 &c. ; but it wants the black marks on the fore part of the thorax and on the abdomen, 

 the base only of which is black ; the metathorax being also black. I am not sure 

 about the colour of the hair, which may be discoloured. 



90. Sphaerophthalma connectens. 



Pallide ochracea, longe hirta ; metanoto, abdominis basi pedibusque nigris. § . 



Hab. Mexico, Pinos Altos in Chihuahua (Buchan- Hepburn). 



The antennae black, sparsely covered with a pale pubescence ; the third joint about 

 one-quarter longer than the fourth. The head coarsely punctured, the upper part 

 densely covered with long pale ochraceous hairs, the lower part has some silvery hairs 

 mixed with the others, and the front has an obscure rufous tinge. The thorax is 

 twice the length of the head, and is narrowed very perceptibly beyond the middle. 

 The pleurae in front have griseous hairs ; behind, the hairs are black. The median 

 segment is covered with long- stiff black hairs, and is coarsely reticulated ; the pleurae, 

 except behind the mesopleurae, being coarsely punctured, the punctures large, deep, 

 and round. The abdomen is as long as the head and thorax united; the petiole is, if 

 anything, broader than long, covered with large deep round punctures, and with long 

 black hairs; the base of the second segment is covered with black hairs, and is punc- 

 tured ; the rest of the abdomen more thickly clothed with pale fulvous hair, which is 

 also more depressed. The pygidial area is black, bare, and rather deeply longitudinally 

 striolated. The second ventral segment is coarsely punctured, and somewhat sparsely 



