50G 



MR. n. N. EIDLEY ON THE 



cell ; mucronate processes on the upper surface ; front wall 

 of ooecium with a semicircular membranous area on the front 

 wall. 



Fig. 2. 



^ 



^^- 



Cellcpora Eidleyi, n. sp. 



The ooecium of C. Bidleiji is remarkable in its shape and relations 

 to the zooecium ; also there is a curious resemblance between the 

 membranous area and tlie orifice of the zooecium. 



Loc. Fernando Noronha. 



CRUSTACEA. 



By E. I. PococK, 

 Assistant in the Zoological Department, British Museum. 



Introductory JRemarTcs. — The fauna is in all essential respects 

 allied to that of the mainland and of the Antilles. The following 

 wide-spread forma were, as might have been exj^ected, met with: — 

 Grapsus maculatus, LeiolopTius planissimus, Fli/pa scutellata, 

 Alpheus Edioardsii, and Gonodactyliis chiragra. There are two 

 new species oi Alpheus, one of Pamilirus, and one of Stenopuscitlus 

 (S. spinosus). The last mentioned genus has hitherto only been 

 known from the island of Mauritius ; its occurrence here, there- 

 fore, is of great interest. A new freshwater Ostracod was also 

 obtained. 



