OLADIUS V1MINALIS. 187 



DlNEUBA VEEN A (Vol. II, p. 16). 



As already (p. 173) indicated, this species is trans- 

 ferred by Konow from the Nematina to the Blenno- 

 campides, owing to the transverse basal nervure being 

 received considerably in front, close to or interstitial 

 with the transverse costal = Mesoneura. 



Konow has also formed for fuscula, parvida, and 

 mentiens, Thorns., a new genus, Pseudodineura, distin- 

 guished from Mesoneura inter alia by the second cubital 

 cellule receiving only one recurrent nervure, while in 

 Mesoneura it receives both. 



It is difficult to say in which cellule the recurrent 

 nervures in despecta, Cam., are received, owing to the 

 absence of the second transverse cubital nervure : in 

 simulans from the position of the third transverse 

 cubital and the second recurrent in the third cubital 

 cellule, it very likely may be a Pseudodineura, and 

 selandriiformis may be one also. 



Konow places fuscula, KL, in Pseudodineura, but if 

 so, no great reliance can be placed on the position of 

 the recurrent nervures, for Klug expressly states 

 (Berl. Mag., viii, 71) that fuscula belongs to the few 

 species which have two recurrent nervures in the second 

 cubital cellule. 



D. despecta, Htg.,is placed by Konow in Mesoneura, 

 and he further states that parvula, Thorns. = fuscula, 

 Kl. Our species does not appear to be despecta, Htg., 

 sec. Knw. ; it agrees best with the description of par- 

 vula, Thorns. Parvula, Klug, has hyaline wings. 



Cladius viminalis (Vol. II, p. 29). 



This species occurs in the United States of America, 

 where it was discovered by Mr. Lintner, and named 

 by him Aulacomerus lutescens (Fourth Report on the 



