A. E. Verrill — Molliisca of the New England Coast. 287 



II. — Table illustrating Bathymetrical Distribution. 



All the species and named varieties are counted together, whether 

 of shallow or deep water origin, except in the second column. Those 

 species that have not been found in this region in more than 60 

 fathoms are not included in the eighth column, otherwise the entire 

 molluscan fauna, living between the shore and 60 fathoms, would 

 have to be enumerated. 



Cephalopoda 



Gastropoda 



Toxoglossa 



Rachiglossa . . 



Tcenioglossa 



Ptenoglossa 



Rhijiliidoglossa 



Gymnoglossa 



TectibrancMata 



JViidibrancMata 



Poli/pJiicophora 



Heteropoda 



Pteropoda 



solenoconch a 



Lamellibranchiata . - 



Brachiopoda . - 



Total Mollusca and Brachi 

 opoda - -. 



27 



216 



36 



33 



38 



10 



30 



20 



23 



13 



5 



8 



24 



16 



115 



3 



401 



27 



205 



34 



29 



35 



10 



28 



20 



23 



13 



5 



8 



23 



15 



107 



3 



380 



11 

 36 



2 



115 



12 



45 

 



148 



15 

 107 

 15 

 21 

 20 



3 

 17 



8 

 15 



5 



3 



9 



59 

 1 



191 



10 

 124 

 12 

 25 

 23 

 7 



14 

 11 

 19 



85 

 1 



228 



2 



14 

 

 

 1 

 1 

 

 

 

 4 

 

 8 



23 

 

 3 

 



42 



III, — Table showing the Progress of Discovery of our deep water 



Mollusca. 



