Mr. R. MacAndrew on the Mollusca of Vigo Bay. 509 



strata) also the Goodallia^ which probably does not extend much 

 further south. We sailed from Vigo on the 2nd instant, but 

 as for some time previously there had prevailed strong winds on 

 shore, were not able to do anything with the dredge north of Cape 

 Vincent. We made an attempt off the Berlings, eight or ten 

 miles distant, but with 200 fathoms Une could get no bottom. 

 There was a very heavy swell. Off Cape St. Mary\s, outside this 

 port, I had a few hauls in from fifteen to thirty fathoms water, 

 and obtained eighty or ninety species which form the materials of 

 a dredging paper. The Vemis from that locahty appears to be in- 

 termediate between the gallina of the Mediterranean and striata 

 of our seas, so that they may at last prove to be only varieties of 

 the same species. We found thousands of live specimens of 

 Ditrupa subulata, which consequently inhabits a shallower depth 

 here than in the British seas. Of Capsa castanea we procured 

 many valves, as on the coast of Cornwall, but no live specimen, 

 which is singular. I am disappointed at not being able to dredge 

 in this harbour, but it is composed of narrow muddy channels 

 through an extensive marsh. The littoral species of mollusca are 

 here quite Mediterranean. Conus Mediterraneus, Cerithium vul- 

 gare^ Murex truncatus and M. Brandaris are about the most com- 

 mon. I have not yet seen any PurpurcB. On the Zostera at low 

 water are found four or five species of Trochus distinct from those 

 of Vigo ; also Rissoa labiosa and Phasianella Vieuxii, Cardium 

 edule is in great abundance and fine ; likewise Ostr<Ba edulis near 

 the North bar. We saw no signs of Laminarice, 



Mollusca obtained in Vigo Bay, March 1849. 

 N.B. Those marked * were procured alive. 



*Balanus tintinnahulum. ^Balanus : common. 



*Clitia verruca. 



*Acasta Montagui, 



Anatifa vulgaris. Anatifa striata. 



*Pollicipes cornucopia : procured from rocks : sold abundantly in the 



market, and much esteemed for food. 



*Dentalium entalis : rare. 



* dentalis (angulated) : abundant. 



— trachea 1 • n- ^^ . 



. ^ . \ m nulhpore. 



i mmute species J ^ 



*Spirorbis : common British species ; on fucus. 



*Solen siliqua : from sand at low water, and sold in the market. 



ensis : island of St. Simon. 



Lyonsia striata : dredged two valves. 



Lutraria oblonga : valves. 

 * elliptica : sold in the market. 



rugosa : numerous valves on the shore : only two specimens 



dredged with united valves : appear to bury deep in the sand : 



