THK CANADIAN ENTOMOI.OOIS'l . 87 



brown, ihird liglit brown, remainder lacking. Front, vertex, genu' and 

 occiput dark brown. 



Thorax : iMesothoracic prKscutum strongly produced cephalad, 

 entirely covering the jironotum : cervical sclerite elongated, prominent; 

 transverse suture scarcely V-shaped ; mesothoracic piaiscutum, dark 

 brown anteriorly, posteriorly with a pale brown median line, which extends 

 back across the scutum, remainder of thoracic dorsum dark brown. 

 Sterna, episterna ani epimer.i brownish yellow ; halteres pale; legs long, 

 dull brown, at the joints somewhat darker; no processes on tiie fore 

 femora, as described for M. fragiilima and M. ciirtipcnnis. 



.\bdomen uniform brown. 



Wings hyaline, costal margin yellow, stigma rather indistinct. Vena- 

 lion (see -iig. 3), Sc very long, as in all members of tlie genus ; R long, 

 cross vein /■ near its tip. R^ gently arcuated, forking far before the tip 



M0ngoiTia zambc 



of .Sci and in a line with R,.- ; the cross-vein ;- fiir before the fork of R^.;, ,; 

 Ro short, oblique ; R, long, in a line with R,.;. R,.. fusing with M,. , to 

 form the proximo-anterior border of cell M„ thus obliterating the ;-;/; 

 cross-vein. M forks at the lower corner of cell M.,, M,..j departing 

 cephalad, fusing with R,,,-, for a distance and finally separating, free at the 

 margin ; M3 in a line with M. Cu short, its fork f:ir back, the free position 

 of Cu, very long, fusing with M, at the fork of M, and continuing to the 

 margin so fused. Cu, fuses with ist .A. far back from the wing-margin, so 

 that ist A-f Cu, is over twice the length of the free portion of Cu., alone. 

 2nd A is very short, suggesting the condition found in Petauriita. 



Hcloiype. — 9, Queliniani, Zambesi R., Dec. 20, 'oS ; Mr. C. W. 

 Howard. 



The genus Mongoma, of which ten species have been described, has 

 a world-wide distribution in the troi)ics ; two species have been described 

 from the West Indies, five species from the East Indies and Australia, and 

 three species from Africa. The genus is distinguished by the excessive 

 length of Sc, the obliteration of the radio-medial cross-vein by the long 



