302 Dr. E. Koehler on the Littoral Fauna of the 



Zosterce. I found at Guernsey all the sponges which I have 

 indicated at Jersey, besides some forms, such as Oplitospongia 

 papillafa^ Bow. (Belgrave Bay), Cholwa cervicorm's, Bow. 

 (Cobo Bay), and Isodicty'a densa, I. ivfandihuliformis^ and 

 Polymastia mammillaris ^ Bow., which I met with in the 

 produce of dredgings brought in by a fisherman. 



CCELENTEEATA. 



The Actiniee are more numerous and more interesting at 

 Guernsey than at Jersey. Actinia equina and A. mesemhry- 

 anthemum^ which are pretty common in the bays of the 

 western coast, are less abundant in the north, and give place 

 to less common types, such as Aiptasia Couchii, Gosse, 

 which is found in abundance on days of spring-tide from 

 St. Pierre to Fort Doyle. This sjjecies, so common in 

 Guernsey, seems not to be very widely distributed ; it is 

 scarcely known except upon a few points of the coast of 

 England (Falmouth). Tealia. crassicornis^ which is very 

 abundant to the north of Bordeaux, attains a remarkable size, 

 and is associated with Sagartia bellis, S. troglodytes, S. j^o-ra- 

 sitica, and lastly 8. sphyrodeta ; the last-named, like the 

 Aij)tasia, is only observed in stations which are uncovered 

 only at spring-tides. A variety of Actinia equina, A. 

 fragacea, is extremely common in the bay of L'Ancresse 

 and Moulin-Huet. From Bordeaux I have also procured 

 fine specimens of Edwardsia callimorpha. Lastly, Garyo- 

 jphyllia Smithil seems to be pretty common at Bordeaux and 

 in Fermain Bay. 



The Lucernarice which I fouii 1 at Ilerm I have never met 

 with in Guernsey. 



ECHINODERMATA. 



These are much more abundant in Guernsey tlian in 

 Jersey. The Common Sea-Urchin [Strongylocentrotuslividus], 

 which is rare at Jersey, where it is never captured but with 

 the dredge, is very abundant at Bordeaux, where it occurs in 

 company with Op)hiothrix fragilis, Ophiocoma 7ieglecta, Aste- 

 riscus verruculatus, Asterias glacialis, and Antedon rosaceus. 

 At the same station I have met with some specimens of 

 Crihrella oculata and Asterias rubens. Cucumaria pentactes^ 

 Gum., also appears to be abundant to the north of Bordeaux ; 

 with it I have found two specimens of Cucumaria frondosa, 

 Miill. The Synaptce are very common and are found all round 

 the island. On the west coast the Echinoderrn fauna is less 



