178 THE ZOOLOGIST. 



one, which some years ago occupied a place in the Whitby 

 Museum, was shot on Sleight's Moor about the year 1840. 

 Unfortunately this specimen was badly preserved, and had to be 

 destroyed. 



NOTES AND OBSERVATIONS ON BRITISH 



STALK-EYED CRUSTACEA. 



Bv John T. Carrington, F.L.S., and Edwakd Loyktt. 



(Continued from p. 50.) 



Genus Pinnotheres, Lutr. 



This genus embraces two British species, remarkable on 

 account of their habitat being in the living shells of Bivalve 

 Mollusca. Tlie generic characteristics are as follows : — Carapace 

 nearly round, hard in the male and soft in the female ; anterior 

 pair of legs nearly equal, with normally developed forceps ; 

 remaining legs having the terminal joint somewhat hooked and 

 strong. Peduncles of eyes short. Abdominal somites seven in 

 number in both sexes, those of the male heing narrow, whilst 

 those of the female are very broad ; in fact, more so in pro- 

 portion to the size of the animal than those of any pre-considered 

 species. 



M. Milne-Edwards includes four other allied genera in 

 the family I'uinothcr'uhe, and gives the localities for them as the 

 lied Sea, Cape of Good Hope, and Australia. 



Pinnotheres jriswm, Latr. 

 This little crab, known as the common Pea Crab, is, as its 

 name suggests, very small— the male being even smaller than an 

 ordinary sized pea, whilst the female is about three times as 

 large. The anterior portion of the carapace in the male projects, 

 and there is a depression on the latero-posterior margin ; whilst 

 in the female the anterior part is rounded, and the depression is 

 wanting. The forceps of the male are robust and strong, whilst 

 those of the female are weak. As it appears that most probably 

 it is the female that is most addicted to inhabiting the shells of 

 Mollusca, this weakness of the forceps would be thus accounted 

 for, as they would be but little required. 



