316 Mr. P. H. Grosse on a sujyposed new Genus 



soon died". The specimen, preserved in spirit, I am aboiit to 

 deposit in the British Museum. 



I wish to dedicate this genus to the venerable author of ' A 

 History of the British Stalk-eyed Crustacea/ to whom I per- 

 sonally owe a life-long debt of esteem, and gratitude, and lovef . 

 And the species to the friend to whom science is indebted for 

 its fortunate discovery. 



EXPLANATION OF PLATE X. 



a. Bellidia Hnntii, magnified 4^. 



h. The anterior organs, viewed from abo\e. 



c. The tail-plates. 



d. The left hand. 



e. One internal antenna. 



XXXIX. — On Hancockia eudactylota, a Genus and Species of 

 MoUusca, supposed- to he nev). By Philip Henry Gosse, 

 F.K.S. 



[Plate XL] 



Family Tritoniadae. 



Hancockia (gen. nov.), Gosse. 



'' Body linear, scarcely palliate. 



Head, beneath, produced on each side into a broad, flat, 

 many-fingered oral tentacle. 



Dorsal tentacles two, with laminated bulbs, retractile within 

 sheaths. 



Branchiae three pairs, foliate, pinnatifid, infolding, remotely 

 seated on the subpalliate margin of the back. 



Foot linear, grasping. 



Hancockia eudactylota , Gosse. 



The only, known, species. 



Body (a, l) about half an inch in length when crawling, 



* My friend favours me with the following note : — " Bellidia is doubt- 

 less a rocky shrimp, not a sandy one ; and it.s colours would match the 

 beautiful red weeds among whicli it is found. I believe it vf as oft" a mass 

 of red weed that I picked the Hancockia (see the following memoir), 

 and the very minute Apli/sia found on the same occasion, which I after- 

 wards showed you." 



t 1 had at first written the word as " Bellia ;" but I find that this 

 form is already occupied in zoology. As I do not choose to relinquish 

 my tribute of affection to my friend, T adopt another termination. 



