MARINE BIOLOGICAL STATION AT PORT ERIN. 43 



lactifloreus, A. pulcher, Tetrastemma melanocephalum, T. 

 candidum, T. dor sale, Nemertes neesii, and Linens obscu- 

 rus. To these Mr. Vanstone was able to add seven others, 

 viz., Cephalothrix biocidata, Tetrastemma nigrum, T. im- 

 mutabile, T. vermicidatum, T. robertiance,, Linens longis- 

 simus and Cerebratidus angidatus (?). Nearly all of these 

 15 species are additions to our lists, only two of them 

 having been previously recorded in vol. I. of the " Fauna." 

 Several of the species live in abundance in the shingle, 

 immediately in front of the Biological Station, along with 

 the Oligochsete worm Glitellio arenarius. It was found 

 that the best way of killing the Nemertines in an expanded 

 condition was by means of either a 1 % solution of cocain 

 or a saturated solution of ferrous sulphate. 



Some parasitic Bopyridse found on the bodies of Gala- 

 thea at Port Erin have been examined by the Bev. T. B. B. 

 Stebbing, who kindly sends me the following report in 

 regard to them : — " The Bopyridae appear to be (1) 

 Pleurocrypta galatece, Hesse, in Galathea squamifera, 

 Leach ; (2) Pleurocrypta intermedia, Giard and Bonnier, 

 in Galathea intermedia, Lilljeborg; (3) Pleurocrypta nexa , 

 n. sp., in Galathea nexa, Embleton. They were all on 

 the right side of the host's carapace, and all laden with 

 eggs. The only authority I know of for Pleurocrypta in- 

 termedia is Giard and Bonnier, Bull. Sci. de la France et 

 de la Belgique, t. xxii. p. 375, footnote, merely giving the 

 name of the parasite and that of its host. On their prin- 

 ciple that the same parasite does not inhabit two different 

 species of host, the giving of the names would be sufficient 

 for a preliminary description. On the same principle, 

 therefore, it will be sufficient to announce Pleurocrypta 

 nexa as a new species derived from Galathea nexa, 

 Embleton. I send you, however, figures of the female 

 and male of this species in dorsal view. The branchial 



