144 



EAST COAST MARINE SHELLS 



CRESEIS CONICA Eschscholtz (S. vitrea Ver.) 

 Pelagic. 



PI. 74, Fig. 112 



N. 40° to the tropics; Gulf of 



Mexico 



GENUS HYALOCYLIS Fol 1875 



HYALOCYLIS STRIATA Rang. Pelagic. 

 PI. 74, Fig. 119 

 N. 40° 6', W. 68° 6', alive to 

 S. 40°; Gulf of Mexico 



GENUS STYLIOLA Le Sueur 1826 



STYLIOLA SDBULA Quoy and Guimard. Length 

 10 mm. 



PI. 59, Fig. 11 



N. 41° to S. 40° 



GENUS CLIO Llnne 1767; Cleodora Peron 

 and Le Sueur 1810 



Shell pyramid-shaped; three sided, 

 ventral side flat, dorsal side keeled; 

 aperture triangular; apex acute. 



The internal organs, including the 

 heart and gills, may be seen functioning 

 in living examples through- the glassy shell, 



CLIO PYRAMIDATA Linne. The specimen il- 

 lustrated is from off Georges Bank in 1290 

 fathoms, temperature 40°. Length 15 mm. 



PI. 57, Fig. 15 



Spitzbergen to S. 40° 



SECTION BALANTIUM Benson 1837 



CLIO RECURVA Children. 

 PI. 59, Fig. 10 

 Pelagic N. 40° to S. 33° 



GENUS CUVIERINA Boas 1886 

 Cuvieria Rang 1827 



CUVIERINA COLUMNELLA Rang. 

 PI. 74, Fig. 117 

 N. 43° to S. 40° 



Length 12 mm. 



Family Cymbuliidae 



GENUS COROLLA Dall 1871 



COROLLA CALCEOLA Verrill. 

 PI. 74, Fig. 120 



1 mile off Gay Head, Massachusetts 

 and in N. 40° 6', W. 68° 6' 



Family Clionidae 



GENUS CLIONE Pallas 1774, Clio of 

 Authors 



CLIONE LIMACINA Phipps. 

 PI. 74, Fig. 122 

 Davis Strait to N. 37"^ 



ORDER ACOELA 



Family Umbraculidae 



GENUS UMBRACULUM 



Shell limpet-shaped, much depressed, 

 concentric growth lines well marked; apex 

 oblique and very little raised; edge sharp; 

 muscle impression well marked inside shell. 

 A curious feature is the very minute left- 

 handed nucleus. The animal is extremely 

 large, the mantle not extending beyond the 

 shell. 



UMBRACULUM PLICATULUM Martens. Coiled Um- 

 brella, This apparently is the first rec- 

 ord for the species within the United States. 

 The specimen obtained upon the beach at 

 Deerfleld was perfectly fresh but did not 

 contain the animal. Length 28 mm, 



PI. 28, Fig, 1 



Deerfield, east Florida to West 



Indies 



Family Pleurobranchidae 



GENUS KOONSIA Verrill 1882 



KOONSIA OBESA Verrill, Range 192-312 fath- 

 oms. 



PI, 66, Fig. 7 



Off Delaware Bay 



Family Heterodoridae 



GENUS HETERODORIS Verrill and Emerton 1882 



HETERODORIS ROBUSTA Verrill and Emerton. 

 458 fathoms. 



PI, 66, Fig. 5 



Off Martha's Vineyard, Massachusetts 



