84 Mr. W. F. Kiiby on a neiv 



second to fourth as a few larger granules ; the fifth segment 

 with lightly convex, finely granular n])])er surface, the 

 edges nearly squared and granular, the median lateral keel 

 extending throughout the anterior half of the segment, the 

 inferior keels denticulate ; all the intercarinal spaces of the 

 tail finely granular; vesicle rather large, wider and higher 

 than the fifth segment, smooth above, coriaceous below, 

 aculeus with a thick basal ))ortion. 



Pectines furnished with 5-6 teeth. 



Measurements in miUimetres. — Total length 44, of cara|)acc 

 5*5, of tail 22 ; width of first segment 3, of second 2*5, of 

 fifth 2 ; width of brachium 2, of manus 4*5 ; length of hand- 

 back 5'5, of movable digit 4. 



A single male example from Trincomalce (Ceylon), col- 

 lected and presented by Major Barrett in October 1893. 



This is the first record ot the genus Ghcerilus from Ceylon. 

 This sjjecies, therefore, is of peculiar interest. It is an 

 extremely well-marked form, differing from all that liave been 

 hitlierto described in the extreme shortness of the digits, i!i:c. 



XI. — On a new Genus and Species o/" Agrionidai from Foo 

 Chow. By W. F. KiKBY, F.L.S., F.E.S., Assistant in 

 Zoological De])artment, British Museum (Natural History). 



Among a small collection of insects collected in Foo Chow by 

 Mr. De la Touche I found a single male specimen of one of the 

 largest and most remarkable species of Agrionidai known ; 

 and I am somewhat surprised to find that it does not aj)poar 

 to have been ])reviousIy described. Its long ])terostigma, 

 traversed basal cells, and remarkable neuration are, in combi- 

 nation, sufficiently remarkable characters to separate it from 

 every described genus of the Agrionina}. 



Akciiineuka, gen. nov. 



Head and body stout, resembling Uinma, but with the 

 abdomen longer; face slightly hairy in front; antenna* rather 

 prominent, second and third joints of nearly equal length ; 

 ocelli red, forming nearly an equilateral triangle. 



AVings long and broad, narrowed towards the tips, but not 

 ])ointed, nodus situated a little before the middle of the wing ; 

 about 45 antenodal and ]iostnodal cross nervures ; upjier ante- 

 nodal sj)ace much broader than the lower ; upjier j)Ostnodal 

 space, cxce])t at its basal end, if anything, narrower than the 



