Dr. Leach's Classification of the British Mollusca. 267 



ing a humming-bird, he brought down his bird, a large Sphinx, 

 and this pretty species of Gymnetis, at the same shot ; our speci- 

 men has still the mark where the shot struck it. 



I have named it in compliment to Mr. Dyson, who has been 

 a most assiduous collector of zoological specimens in Honduras 

 and Venezuela. Mr. Doubleday has named a very striking 

 species of Butterfly, Euterpe Dysoni (Ann. and Mag. of Nat. Hist. 

 vol. xix. p. 385), after him. There has not been a more active 

 or intelligent collector in this country than Mr. Dyson. 



On p. 15, as Dr. Schaum pointed out to me, remove Clinteria 

 flavomarginata, and put it as a variety of C. atra ; we have lately 

 acquired two specimens of this pretty variety. 



At p. 15 add Clinteria Hoffmeisteri, White, a very distinct 

 hairy species from Northern India, lately acquired by the 

 Museum. 



[To be continued.] 



XXVI. — The Classification of the British Mollusca. 

 By W. E. Leach, M.D. 



To Richard Taylor, Esq. 



My DEAR Sir, September 9th, 1847. 



In a late visit to the North I observed that several British con- 

 chologists were much interested in knowing what was the arrange- 

 ment of British Mollusca proposed by my late excellent friend and 

 first teacher in zoology Dr. Leach, and that some of them had even 

 taken the trouble to copy the proof sheets of his work which were 

 in the possession of one or two persons. 



Knowing that several copies of Dr. Leach's list were in circu- 

 lation, his names being in common use in several cabinets at the 

 time he was at work on the subject, I applied to Mr. James Francis 

 Stephens, who was in constant communication with Dr. Leach, 

 and he at once produced me the list which I herewith send, with 

 the heading it now bears, and a former one not so complete; but as 

 this list contains a few names not inserted in the latter one, I have 

 added them in their places, marking them with an asterisk and 

 with the date of the first list, 1816. 



It is much to be regretted that Dr. Leach's MSS., which I am 

 aware were prepared with the characters of his genera in detail, 

 have not been printed, that his extensive labours on this part of 

 the animal kingdom should not be lost to the world. To make 

 the list more easily understood, I have added the genus to which 

 Montaguij or Lamarck has referred the species, after the name 

 used by Dr. Leach. 



I am much inclined, as these names were for years exhibited 



19* 



