668 REPORT OF COMMISSIONER OF FISH AND FISHERIES. 



Elysiella catulus Yerrill. Tlate XXY, fig. 171. (p. 480.) 



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

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



J870. • 



Great Egg Harbor, New Jersey, to Massaclmsetts Bay. Xew Haven 

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



PTEROPODA. 

 GYMNOSOMATA. 



€lIONE PAPILLONACEA Pallas. (p. 411.) 



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

 to North Pole, p. 195, 1774 (t. Gould). Clio ninsn Milller, Prod. Zool. Dan., 2742, 

 1776 (nonljinue); Fabricius, Fauna Griinlaudica, p. 334, 1780 (description ex- 

 cellent). C?io &o?-ea/«s Brugiere, Eucyc. Metli., Vers., i, p. 502, 1792 (t. Gould). 

 Clionc horeaVis Gray, Brit. Mus. Pteropoda, p. 36, 1850 ; Stinipsou, Shells of New 

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

 Clionc limadnn Stimpson, Smithsonian Check-Lists, p. 4, 1860; Binney in Gould, 

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

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



New York to tbe Arctic Ocean ; on the no]'thern coasts of Europe 

 south to Great Britain. OfftStonington, Connecticut (A. E. Y. and D. 

 C. Eaton) ; Yineyard Sound (Y. N. Edwards); Portland, JMaiue (0. B. 

 Fuller). 



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

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

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

 Systema Xatura^, 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 6, fig. 7, 1872. 



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

 slender, slightl^^ 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 S((lj)(c, off Gay Head, Martha's Yineyard, in the after- 

 noon, September 9, 1871. 



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

 Messrs. S. I. Smith and Oscar Harger, ofi Saint George's Bank, in 1872, 

 on the United States steamer Bache. These may occasionally occur 

 also in the vicinity of Xantucket and Martha's Yineyard. 



