DISTRIBUTION IN DEPTH. 



149 



Species. 



Artemis lincta 

 Tapes virginea 

 Venus verrucosa ... 

 Tellina donacina ... 



„ balaustina... 

 Syndosmya alba ... 

 Lucina lactea 



„ squamosa ... 



„ rotundata ... 

 Cardium rusticiim ... 



„ exiguum ... 

 Cardita sulcata 

 Patella scuteUaris ... 



Calyptraea Sinensis 



Bulla hydatis 



Turi-itella 3 plicata. . . 

 Trochus canaliculatus 

 Cerithium lima 



„ vulgatum 

 Murex fistulosus . . . 

 Aplysia depilans ... 

 Ostifea plicatula ... 



Number 



of living 



specimens. 





 

 

 

 12 

 1 

 1 

 



Number 



of dead 



specimens. 



Observations. 



1' 



5' 



6' 



1-3' 



2' 



2-10' 



2-28' 



3' 



4' 



1' 



7' 



1' 



1 



2 

 1 

 1 



4 

 3 

 8 

 

 

 10' 



A strong valve. 



Washed in from,,, 

 shore. 



In dark mud. 



Date 



Locality 



Depth 



Distance from shore 

 Ground 



II. 



Sept. 14th, 1842 

 Gulf of Smyrna. 

 26 fathoms. 

 Two miles and a half. 

 Fine brovrn mud. 



Avicula Tarentina , 

 Saxicava arctica . 



Full grown, adhering 

 to each other. 



^ate 



Locality 



Depth 



Distance from shore 

 Ground 



III. 



August 5th, 1841. 



Off northern extremity of Paros. 



40 fathoms. 



Three miles and a half. 



Weedy. 



Pectenpusio 



5 



4' 





„ opercularis 







1 



Small. 



Nucula margaritacea 







2' 





Cytherea apicalis 







1' 





Cardita squamosa 



1 



1' 





Cardium papillosum 







2 





Fusus fasciolaroides 



1 







New, 



Murex brandaris 







3 





Vermetus gigas 







1 





„ corneus 



3 







New. 



Trochus exiguus 



8 



2 





Turbo rugosus 



1 









Pleurobranchus sordidus 



1 







New. 



Doris tenerrina 



2 





New. 



„ gracilis 



2 







„ coccinea 



1 







Ascidium, four species 









Aplidium, two species 









