280 MARINE ZOOLOGY OF ARRAN. 



*Rissoa rubra, 



* rutilabris, . 



semistriata, . 



stnata, 



- striatula, 



ulvae, . 



- vitrea, 

 Zetlandica, 



*Saxicava arctica, 



* rugosa, 



*Scalaria com munis, 



Scaphander lignarius, 

 *Skenea divisa, 



* nitidissima, 



* planorbis, . 



* rota, . 



*Sphcenia Binghami, 

 *Syndosmya prismatica, 



Tapes aurea, . 



decussata, 



virginea, 



*Tellina crassa, 



- donacina, 



* tabula, 



* incarnata. . 



* solidula, 



tenuis, 



m i , i f Deep water, between Hamil- 



Terebratulacaput-serpentis, | JJ Roc k and Holy Island. 



*Teredo megotara, . 



XT (In the wreck of the pier, Holy 

 Norvegica, . . Isknd 



Thracia phaseolina, 



pubescens, . 



Trichotropis borealis. 

 Trochus cinemrius, 



magus, 



millegranus, 



Montagui, 



pusillus, . 



tumidus, . 



umbilicatus, 



undulatus, 



ziziphinus, 



Lam lash Bay. T. umbilicatus 

 is common along the shore 

 of Holy Island, also T. 



