276 



MARINE ZOOLOGY OF ARRAN. 



but which is really formed of three minute plates, which I 

 suspect not to be inter-radials at all, but dermal plates; of 

 these there is no trace vrfiatever in the Comatula rosacea. 



TABLE I. MOLLUSCA. 



*Aclis nitidissima, . 

 * unica, . 



Acmaea testudinalis, 



virginea, 



*Adeorbis sub-carinata, 

 *Amphysphyra hyalina, 



Anomia ephippium, 



aculeata, 



Aplysia hybrida, 



Aporrhais pes-pelicani, 

 *Arca lactea, . 



Artemis exoleta, 



lincta, 



Astarte compressa, 



* elliptica, 



Scotica, 



sulcata, 



Buccinum undatum, 

 *Co3cum glabrum, . 

 trachea, 



Cardium echinatum, 



edule, 



* iasciatum. . 



* nodosum, . . 



Norvegicum, 



* Suecicum, 



*Cerithiopsis tubercularis, 

 *Cerithium adversum, 



reticulatum, . 



Chiton asellus, 



marmoreus, . 



ruber, . 



*Chemnitzia indistincta, . 

 * rufescens, 



Circe minima, 



The whole of the shells named 

 in this table were dredged 

 in Lamlash Bay the best 

 ground being the area that 

 extends from Clachland 

 Point and Hamilton Rock 

 to the north end of Holy 

 Island, in from 15 to 40 

 fathoms. 



In the pools, Clachland Point. 



Scarce in Lamlash Bay. 



