CRUSTACEA. 



Paper read by Mr. Joseph Sinel. 



The class Crustacea, to which division alone of the sub- 

 kingdom Arthropoda, an Economic as well as a Scientific 

 interest is attached, is remarkably well represented on the 

 shores of these Islands. In the "stalk-eyed" or "superior" 

 Crustacean s alone we have no less than ninety of the approxi- 

 mately one hundred species recorded as found in British waters. 

 Both Jersey and Guernsey can separately boast of at least 

 eighty- five of these. Several forms, among which I may cite 

 "Acheus" of which Bell gives "two recorded instances," 

 I have taken in number in St. Clement's bay, Jersey. 

 " Stenorynchus cegyptius" one of the slender legged spider 

 crabs is recorded for the first time as occurring in British 

 waters, in the " Zoologist " for April, 1881, from specimens 

 taken in St. Aubin's bay, Jersey, where, by the way, it is the 

 most common of the section to which it belongs. (In speaking 

 of " British Waters " I must here remind my friends that at the 

 time of the publication of the above records — these included 

 the whole of the English Channel : the lines laid down at one 

 of the recent meetings of the British Association, now place 

 these Islands beyond the boundary). 



Then we have the rare " Alpheus ; " a Mediterranean form 

 occurring at Guernsey and Herm, and more sparingly at 

 Jersey. The curious 11 square-faced lobster" of the fishermen, 

 " Scyllarus arctus" another Mediterranean form, is not 



