EAST AMERICAN SCAPHOPOD MOLLUSKS. 



79 



DENTALIUM (EPISIPHON) SOWERBYI SOWERBYI Guilding. 



Plate 13, iigs. 2, 3, 10. 



This, the typical subspecies, includes all specimens answering the 

 general description given of Dentalium sowerhyi, excluding only the 

 highly polished, perfectly smooth, and transparent form which finds 

 its hal)itat in certain Cuban waters. This subspecies presents a 

 shell of somewhat coarser surface, rendered translucent rather than 

 transparent by reason of an uneven deposit of the shell material 

 during growth. The shells are rather thicker and less delicate than 

 theZ>. s. pelliceri next considered. 



The measurements are the same as given for D. sowerhyi. 



The many lots in the United States National Museum collection, 

 as shown in the table below, are from the American continental shelf 

 zone from Hatteras south to the Gulf of Mexico, and then from 

 Barbados. Further research in Antillean waters will likely fill in 

 the great gap. 



Remarks. 



Off Cape Hatteras, Norlh Carolina, U. S. B. F. 



Station 2592. 

 OS Cape Hatteras, North Carolina, U. S. B. F. 



Station 2601. 

 Off Cape Hatteras, North Carolina, U. S. B. F. 



Station 2595. 



do 



Off Cape Hatteras, North Carolina, U. S. B. F. 



Station 2602. 

 Oil Cape Hatteras, North Carolina, U. S. B. F. 

 Station 2600. 

 Ort" Cape Hatteras, North Carolina, U. S. B. F. 



Station 2602. 

 OIT Cape Hatteras, North Carolina, U. S. B. F. 



Station 2596. 

 Off Cape Fear, Norlh Carolina, U. S. B. F. Sta- 

 tion 2616. 



Miami, Florida, Eolis Station 48 



Miami, Florida, Eolis Station 51 



M iami, Florida, Eolis Station 87 



.Miami, Florida, Eolis Station 69 



Miami, Florida, Eolis Station 80 



Miami, Floriila, £o/2S Station 115 



•Miami, Florida, Eolis Station 116 



Miami, Florida, Eolis Station 113 



Miami, Florida, Eolis Station 82 



.Mianu, Pdorida, ^bft'* Station 62 



Miami, Florida, ^o/is Slation 49 



Miami, Florida, Eolis Sialion 118 



Oil' Miami, Florida, £oZiS Station 68 



Oil Miami, Florida, Eolis Station 07 



O IT Miami, Florida, Eolis Station 77 



Oil' Miami, Florida, Eolis Station 93 



Ofl' Mianu, Florida, Eolis Station 122 



Oil Miami, Florida, ivo/is Sialion 95 



OtT Miami, Florida, Eolis Station 124 



OlT Miami, Florida, Eolis S[aXion 117 



OIT Miami, Florida, Eolis Station 94 



OtT Miami, Florida, Eolis Station 140 



Off Fowey Light, Florida, Eolis Station 177 



Ofl Fowey Light, Florida, Eolis Station 3(i4 



Off Fowey Light, Florida, Eolis Station 152 



Off Fowev Light, Florida, Eolis Station 142 



Olf Fowey Light, Florida, Eolis Station 119 



Ofl Fowey Light, Florida, Eolis Station 127 



Ofl Fowey Light, Florida, Eolis Station 183 



OtT Fowey Light, Florida, Eolis Slation 351 



OlT Fowev Light, Florida, Eolis Slation 352 



Ofl Fowey Light, Florida, Eolis Station 128 



Ofl Fowey Light, Florida, Eolis Station 121 



OtT Fowey Light, Florida, Eolis Station 149 



120 fms., 58°, fne. gy. s. 



107 fms., 67.4°, gy. s. p. 



63 fms., 75°, gy. s. brk. sh. 



63 fms., 75°, gy. s. brk. sh. 

 124 fms., 61°, s. r. 



87 fms., 71.5°, fne. gy. s. 



124 fms., 01°, s. r. 



49 fms., 79°, gy. s. 



17 fms., s. p. 



00 fms., g. m. 



24 fms. 



63 fms. 



38 fms. 



58 fms. 



100 fms. 



65 fms. 



18-20 fms. 



8;3 fms. 



20 fms. 



30 fms., s. brk. e. 



30 fms. 



45 fms. 



50 fms. 

 8 fms. 

 18-25 fms. 

 30 fms. 



90 fms. 

 35 fms. 

 35-38 fms. 

 42 fms. 

 65 fms. 

 (iO fms. 

 75-90 fms. 

 40 fms. 

 40 fms. 

 23 fms. 

 42 fms. 

 80 fms. 

 90 fms. 

 90 fms. 

 60 fms. 

 30 fms. 

 28 fms. 



