126 Bihliographical Notice, 



XIII. — Adris sikhiraensis, a neio Form of the Ophiderid 

 Group ofNoctuid Moths. By A. G. BuTLER, Ph.D. &c. 



For some years past we have had a single example of a 

 moth in the Museum collection which I felt certain was 

 distinct from the widely distributed A. tyrannus ; but, as 

 Mr. Hampson was inclined to the belief that it was merely an 

 instance of individual variation, I abstained from describing it. 

 Mr. Moore's collection has now added three other examples 

 from Darjiling, clearly demonstrating the fact that the Sikhini 

 form differs constantly in certain characters from the widely 

 distributed form of the East. I therefore no longer hesitate 

 to name it. 



General character and pattern of A. ti/rannus^ from which 

 it differs in having the primaries much more largely suffused 

 with moss-green ; the sinus at the inner margin of these 

 wings considerably longer ; the curved black band on the 

 secondaries with its upper portion constantly much wider and 

 the large black reniform patch with its inferior lobe much 

 enlarged, reducing the acuteness of the external indentation ; 

 the third joint of the palpi terminates in a decidedly smaller 

 expansion than in any example of A. ttjrannus. 



Expanse of wings 100-118 milliin. 



Darjiling. 



1 believe this to be a perfectly distinct representative form 

 of A. tyrarmus ; for altJiough individuals vary in some of 

 the characters which I have pointed out, there is nevertheless 

 a wide difference between the nearest forms of the two types. 



BIBLIOGRAPHICAL NOTICE. 



A Monograph of the Land and Freshiuater Mollvsca of the British 

 Isles. By John W. Taylor. Part I. Leeds, October 1894. 



It is now thirty-two years since the late Dr. J. Gwyn Jeffreys 

 published his account of the land and freshwater shells of the 

 British Islands. It formed the first volume of his well-known and 

 admirable ' British Conchology,' and has generally been accepted by 

 the conchologists of this country as the standard work upon this 

 branch of science. Other treatises have since been published, but 

 none of these, with the exception of Lovell Reeve's ' Land and 



