186S.] 



83 



Genus Oligoneuria, Pict. 



Type, 0. anomala, Koll. Mss. ; Pict. 



The typical species has two simple ulnar ribs, and two simple* vasa 

 interna. 



Distrib. — Brazil, 1 sp. 



Section B, 0. Shenana, Imhoff. 

 The robust anterior and the slender second ulnar ribs are bipartite. 

 The divisions (veins) of the second rib closely accompany the first and 

 the third ribs respectively. Prom this last a slender vein is sent to the 

 internal margin. Between these ribs and veins a very coarse reticula- 

 tion is obscurely indicated. The anterior vas internum accompanies 

 the third ulnar rib and its vein : the posterior is very short, and has 

 two strong veins and a feeble one. The ulnar ribs are connected 

 together by a few cross-veinlets. The has four-jointed forceps, 

 whose proximal joint is upwards of twice the length of the remaining 

 three together. 



Distrib.— Central Europe, 2 sp. 



Section C, 0. Trimeniana, McLachlan. 



The first and the third ulnar rib is bifid ; the second is obsolescent 

 and bipartite, as in O. Rhenana. The anterior division of the second 

 rib emits a veinlet nearly parallel with the posterior division of the 

 first rib, which vanishes before it attains the outer margin, and is met 

 obliquely by the cross-veinlets of an obscure coarse reticulation that 

 occupies the space between the two most prominent ribs. There are 

 two simple vasa interna. 



Distrib. — Natal, 1 sp. ( ? only known). 



Genus CAMPSUETJs,t nov. gen. 

 Syn. Paling enia, Burm., Pict., part. 

 Type C. latipennis, Walker. 

 Distrib. — The Amazons, 6 sp. 



The first ulnar rib is bipartite ; its bifurcate anterior division includes 

 a simple supplementary vein; its posterior division separates into an 

 anterior simple, and a bipartite veinlet. Tlie second ulnar rib is bipar- 

 tite, and is produced over the third rib to anastomose with the comm.on 



* T am inclined to regard the first of these an ulnar ; but have followed above M. Pictel's eiplana- 

 tion of the neuration, not having seen the type. 



t Campsurus (Gr.)— Kampse-oura = bent-tailed. 



