Anglo-Norman Islands. 305 



the same as tliat of the tube of G. Valencinu, but it is much 

 thinner. The animal is smaller than in the latter species, and 

 the anterior region of its body presents only nine segments. 



Clymene lumhricoides accompanies the Marphysce in the 

 muddy sands. At Bordeaux I found Petaloproctus terricola 

 enclosed in a tube with very thick walls, formed of aggluti- 

 nated fine sand, and iixed to the lower surface of stones. 



The fauna of the Terebellians and Serpulians differs little 

 from that of Jersey. Terehella conchihga and T. nebidosa ai'e 

 common at Bordeaux, at the Grand Havre, and on the 

 western coast of the island, where T. prudens is also met 

 with. North of Bordeaux I have also found a specimen, 

 unfortunately in very bad condition, of a Terehella, which I 

 refer to T. Montagai, Quatref. [T. cirrata, Mont.), indicated by 

 Lankester at Guernsey. Protula protensa is also common in 

 Eocquaine Bay. Sabella arenilega and S. verticillata are 

 common ; S. pjavonina is rather rare, and I have met with 

 only two specimens of it at the Grand Havre. With Spirorhis 

 commums and Vermtli'a conigera and tricuspis I may cite 

 further Berpula fascicularis, which is abundant at Bordeaux. 

 As at Jersey, the Gephyrians are represented by Phascolo- 

 soma elongatum and P. margaritaceum. 



ASCIDIA. 



The fauna of the simple Ascidia seems to be rather less 

 developed at Guernsey than at Jersey. At Guernsey I have 

 not found Cynthia granidata, Ascidiella aspersa, Molgula 

 roscovita^ and Ctenicella Lanceplaini of Jersey. The other 

 Ascidia are those of Jersey. Molgula socialis, Aid., is pretty 

 common at Bordeaux ; I have also found it at Moulin-Huet, 

 but always of small size in the latter locality. 



The Compound Ascidia, which are not common at Bor- 

 deaux and in the north of the island, are more abundant at 

 Lihou and in Rocquaine Bay, where the gQ.n&v&. A7naroucmm, 

 Fragarium, Morchellium, Leptoclinum, Botryllus, and Botryl- 

 luides are represented by varied species. 1 will also record 

 Leptoclinum Lacazii, which I have indicated above in 

 Belgrave Bay. 



Crustacea. 



A certain number of species captured at Jersey I have not 

 met with a1 Guernsey, such as : — Stenorhynchus (egr/ptius, Por- 

 tunus pusillus, Thia polita, Galathea strigosa, Inackus dorsett- 

 ensiSy Cratigon sculpius, C. bispinosus, G. trispinosuSj Mysis 



