BAILY ON MAKINE INVEB.TEBRATA. 



257 



Porcellana longicomis, Minute Porcelain Crab. — Several living ex- 

 amples of this pretty little species were found by breaking open the 

 JLlcyonium digitatum. It is said to be a very common species, found 

 under stones a little beyond low water mark, and is very often brought 

 up in great numbers by the oyster dredge. 



MOLLUSC A TUNIC AT A. 



Several transparent bodies, closely corresponding with the descrip- 

 tion of some of the Ascidians, such as A. vitrea, which is said to be 

 a not uncommon species, were collected. Want of opportunity and 

 of access to proper books has, however, prevented the species being 

 determined. 



CONCHIFEB.A BIVALVE SHELLS. 



The x indicates the comparative abundance of the species 

 specimens not otherwise marked were found living. 



all the 



Ostrea edulis (dead). 



Anomia ephippium, on roots ofLa- 



minaria, and dead shells (x). 

 Pecten maximus. 

 P. varians. 

 P. pusio, dead shells. 

 P. opcrcularis. 

 Mytilus edulis (xxx). 

 Modiola modiolus (dead), both 



valves attached to seaweed. 

 Cardium edule. 

 Cardium Norvegicum. ■ 

 C. rusticum (dead). 

 Cyprina Islandica (dead). 

 Venus striatula (xxxx). 



Artemis exoleta. 

 Tapes pullastra. 

 T. virginea. 

 Mactra solida (xxx). 

 Jf. stultorum (xxx). 

 Lidraria elliptica (dead). 

 Tellina rosea (dead). 

 Psammobia vespertina (xx). 

 Donax anatina (xx). 

 Solen sili qua (xx). 

 S. ensis (xx). 

 Cultellas legumen (x). 

 Mya truncata. 



Saxicava rugosa (dead), in perfora- 

 tions of limestone rock. 



GASTEKOPODA UNIVALVE SHELLS. 



Murex erinaceus (dead). 



Fusus antiquus. — A bunch of the nidamental capsules was found, each 

 capsule containing three young shells (xx). 



Fusus Islandicus (dead). 



Buccinum undatum. — Bunches of the nidamental capsules of this 

 common species were frequent, the capsules and young shells being 

 much smaller than in the preceding species, about eight young shells 

 being contained in each capsule (xxx). 



JYassa reticulata. 



Purpura lapillus, on rocks at low water (x). 



Cyprcea Furopaa (dead). 



Natica monilifera, and nidamental capsules of a coiled ribbon-like 

 form, were met with on the shore (xx). 



Turritella communis (dead). 



Litorina litorea. 



2k 



