668 EEPORT OF COMMISSIONER OF FISH AND FISHERIES. 



Elysiella catulus Verrill. Plate XXV^ fig. 171. (p. 480.) 



American Journ. Science, vol. iii, p. 284, Plate 7, figs. 6, 5% 1872. Flacohmnchus 

 catulus Agassiz, MSS. ; Gould, Invert., ed. ii, p. 256, Plate 17, figs. 249, 250, 

 J870. 



Great Egg Harbor, New Jersey, to Massacliusetts Bay. New Haven 

 Harbor and Wood's Hole, among eel-grass, common. 



PTEROPODA. 

 GYMNOSOMATA. 



Olione papillonacea Pallas, (p. 444.) 



Spicil. ZooL, X, p. 37, Plate 1, figs. 18, 19, (?) 1774. Clio Umacina Pbipps, Voyage 

 to North Pole, p. 195, 1774 (t. Gould). Clio retusa Miiller, Prod. Zo51. Dan., 2742, 

 1776 {non Linnd) ; Fabricius, Fauna Gronlandica, p. 334, 1780 (description ex- 

 cellent). Clio horeaUs Brugiere, Eucyc. Metli., Vers., i, p. 502, 1792 (t. Gould). 

 Clione horealis Gray, Brit. Mus. Pteropoda, p. 36, 1850 ; Stimx^son, Shells of New 

 England, p. 27, 1851 ; H. and A. Adams, Genera, vol. i, p. 62, Plate 7, fig. 7. 

 Clione Umacina Stimpson, Smithsonian Check-Lists, p. 4, 1860; Binney in Gould, 

 Invert., ed. ii, p. 507, fig. 754 (poor). Clio Miquelonensis Rang, Ann. Sci. Nat., 

 ser. i, vol. v, p. 285, Plate 7, fig. 2, 1825. 



New York to the Arctic Ocean -, on the northern coasts of Europe 

 south to Great Britain. Off Stonington, Connecticut {A. E. V. and I). 

 0. Eaton) -, Vineyard Sound (Y. N. Edwards) ; Portland, Maine (0. B. 

 Fuller). 



The synonymy of this species has been greatly and unnecessarily con- 

 fused. The Clio retusa of Linne was a southern Pteropod, having a tri- 

 quetral shell. In a footnote on page 1094 of the twelfth edition of the 

 Systema Naturae, he states that he had not seen the genus Clio, but 

 adopts it from Brown. He gives three species mentioned by Brown, all 

 having shells. 



THECOSOMATA. 



Styliola vitrea Yerrill. Plate XXY, fig. 178. (p. 443.) 



American Journ. Science, vol. iii, p. 234, Plate C, fig. 7, 1872. 



Shell smooth, polished, diaphanous, almost glassy, long conical, rather 

 slender, slightly curved toward the acute apex; animal white ; locomo- 

 tive organs obovate, with the end broadly rounded, and bearing 

 slender tapering tentacle-like processes near the middle of the anterior 

 edge; intermediate lobe short, rounded in front. 



Length of shell, 11.5"""; diameter, 2""". 



Taken among ISalpcv, oif Gay Head, Martha's Yineyard, in the after- 

 noon, September 1), 1871. 



Several other species of this and other related genera were taken by 

 Messrs. S. I. Smith and Oscar Ilarger, of! Saint George's Baidv, in 1872, 

 on the United States steamer Bache. Tiiese may occasionally occur 

 also in the vicinity of Nantucket and Martini's Yineyard. 



