■DISTRII^UTION IN DEPTH. 



149 



Species. 



Artemis lincta 

 Tapes virginea 

 Venus verrucosa . . . 

 Tellina donacina ... 



„ balaustina... 

 Sj-ndosmya alba . . . 

 Lucina lactea 



„ squamosa ... 



„ rotundata ... 

 Cardium rusticum ... 



„ exiguum ... 

 Cardita sulcata 

 Patella scutellaris ... 



Calyptrsea Sinensis 



Bulla hydatis 



Tiu-riteUa 3 plicata... 

 Trochus canaliculatus 

 Ceritliium lima 



„ vulgatum 

 Murex fistulosus 

 Aplysia depilans ... 

 Ostrcca plicatula ... 



Number 

 of living 

 specimens. 



Number 



of dead 



specimens. 



1' 



5' 



5' 



1-3' 



2' 



2-10' 



2-28' 



3' 



4' 



1' 



1' 



1 



2 

 1 



1 

 4 



Observations. 



A strong valve. 



Washed in from, 

 shore. 



In dark mud. 



Date 



Locality 



Depth 



Distance from 

 Ground 



II. 



Sept. 14th, 1842 

 Gulf of Smyrna. 

 26 fathoms. 

 Two miles and a half. 

 Fine brown mud. 



Avicula Tarentina ... 

 Saxicava arctica ... 



3 Full gi-own, adhering 



to each other. 

 



III. 



^ate August .5th, 1841. 



Locality Off northern extremity of Paros. 



Depth 40 fathoms. 



Distance from shore ... Three miles and a half. 



Ground Weedy. 



