DTSTRIBUTION IN DEPTH. 



437 



Number Number 



Species. of living of living Observations, 



specimens, specimens. 



Cardium rusticum 1' A strong valve. j 



exiguum 3 1' 



Cardita sulcata 1/ 



Patella scutellaris 1 Washed in from 



shore. 



Calyptreea Sinensis 2 



Bulla hydatis 1 



Turritella3plicata 1 



Trochus canaliculatus 4 



Cerithium lima 3 , 



vulgatum 12 8 



Murex fistulosus .: 1 In dark mud. | 



Aplysia depilans 1 | 



O.straea plicatula 10'' j 



I 



II. 



Date Sept. 14, 1842. j 



Locality Gulf of Smyrna. 



Depth 26 fathoms. 



Distance from shore Two miles and a half. j 



Ground Fine brown mud. ' 



Avicula Tarentina 3 3 Full grown, adhering | 



to each other. I 



Saxicava arctica 4 



I 



. ,1 



[ 



III. 



Date August .0, 1841. j 



Locality Off northern extremity of Paros. 



Depth 40 fathoms. . 



Distance from shore Three miles and a half. . 



Ground Weedy \ 



Pecten pusio ^ ^' ^ ' 



opercularis 1 Small. , 



Nucula margaritacea 2' 



Cytherea apicalis " •' i 



Cardita squamosa 1 1 1 



Cardium papillosum 2 ] 



Fusus fasciolaroides 1 ^ New. i 



Murex brand aris 3 , 



Vermetus gigas 1 _ ' 



corneas 3 New. | 



Trochus exiguus 8 2 



Turbo rugosus ^ ^ 



Pleurobranchus sordidus .... 1 New. \ 



