42 



THE CANADIAN ENTOMOLOGIST 



Family Leptoperlid^. 

 Note on the Type Specimen of Leptoperla Beroe Newm. 



(Text Fig. 4a). 



The venational characters of Leptoperla beroe Newm., which is not only the 

 type of the genus, but also the first Leptoperlid ever described, were not clearly 

 given by Newman. The type is in the Hope Museum, Oxford. By the kind- 

 ness of Professor Poulton, F. R. S., I was recently able to study this specimen 

 carefully. Text Fig. 4 shows the venation of the right forewing, which has a 

 peculiar aberrancy in that the two branches of M come together and fuse for 

 a short space, and then separate again distally. The left forewing and both 

 hindwings are much rolled and crumpled, the specimen being gummed on card. 

 By softening these wings with warm water, and uncurling them with a fine brush, 

 I was enabled to prove that the left forewing possesses a normal venation, 

 with both branches of M running free and parallel to their tips. The following 

 diagnosis for the genus may now be given : — • 



Fig. 



"~^. Right forewing of type specimen of Leptoperla beroe Newm. The normal courses 



of the branches of M, and the form of the crumpled anal area, as revealed by a study of 



the daniaged left wing, are shown by dotted lines. 



^- Right forewing of a specimen of Dinotoperla opposita (Walk.) from Mount Wellington, 



Hobart, Tasmania. 



C. Right forewing of Zelandohius confusus (Hare) paratype, from Wellington, New 



Zealand. 



Aniennce and cerci long, the latter considerably longer than the abdomen* 

 Forewing with Sc stopping just short of half-way, its tip forked. Rs and M 

 both forked not far from their origins, Cui unforked and very long, running to 

 the same level below the apex of the wing as that at which Ri ends up above it. 

 Complete sets of cross-veins between M and Cui and also between Cui and 

 Cuo. 2A simple, 3A forked. Irregular cross-veins enclosed in pale, oval spaces 

 occupy positions in the distal half of the wing; (the wing membrane generally 

 is of a brownish colour). Hindwing with Sc as in forewing; Rs simple; M with 

 a free upper branch, and with its lower branch fused with Cui to the border; 

 Cui simple ; anal fan with five straight veins excluding 1 A. (Cross-veins present 



