24 
T. D. A. COCKERELL. 
I cannot determine the spur-characters o£ the hind tibiae. Malar space 
obsolete. Tegulae large, 1292 p long, with very fine delicately plu- 
mose hairs. 
The venation is normal for Electrapis , except that (as in Bombus) 
the basal nervure goes basad (170 p) of the transversomedial. The 
marginal cell has the lower side beyond the submarginals faintly 
concave. The hind wings have 15 costal hooks, and the transverso- 
median nervure has the upper half vertical or almost, and the lower 
strongly bent basad. 
The following measurements of the anterior wings are in p: 
Length of first submarginal cell (obliquely) . . 1122 
Second submarginal cell on marginal .... 425 
First recurrent nervure to base of second sub- 
marginal cell 476 
First recurrent nervure to apex of second sub- 
marginal cell 425 
Third submarginal cell on marginal .... 459 
Third submarginal cell on lower side .... 1020 
Insertion of second recurrent nervure from end 
of third submarginal cell 85 
Depth of marginal cell . 782 
Upper section of basal nervure 425 
Lower section of basal nervure 1700 
Length of first discoidal cell 2269 
Electrapis tornquisti is named after Dr. A. Tornquist. It is 
nearer to Bombus than is E. meliponoides ; the positions of the basal 
and transversomedial nervures are as in Bombus , but the second sub- 
marginal cell is of ordinary type, and has not the peculiar form of 
that of Bombus. The second recurrent nervure ends nearer the end 
of the third submarginal cell than is usual in Bombus. 
Protobombus tristellus sp. nov. 
Very closely related to P. indecisus Ckll., but rather smaller, 
about 7 mm long; the vertex, mesothorax and scutellum with rnuch 
erect black hair. The wings are large for the size of the insect 
(anterior wings about 6 2 / 3 mm long), pale fuliginous (including posterior 
wings), the anterior wings with a large and very conspicuous circular 
dark fuliginous cloud occupying the end of the marginal cell and 
extending a little below. The insect is black, w T ith the hind margins 
of the abdominal segments rather broadly very pale reddish. The 
