556 A. E. Verrill— Catalogue of Marine Mollusca. 
Balantium recurvum Children. 
Journ. Roy. Inst., xv, p. 220, pl. 7, fig. 107, 1829. 
Gray, Catal. Moll. Brit. Mus., Pteropoda, p. 14, 1850. 
Cleodora balantium Rang, Mag. Zool., 1834; Hist. Nat. Pterop., p. 52, pl. 5, fig. 12; 
pl. x, fig. 7, 1852. 
Balantium recurvum Verrill, Proc. U. 8S. Nat. Mus., iii, p. 393, 1880. 
Fresh fragments occurred at stations 865, 867, 869, and 895, off 
Martha’s Vineyard. 
Styliola vitrea Verrill. 
Styliola vitrea Verrill, Amer. Journ. Sci., iii, p. 284, pl. 6, fig. 7, 1872. 
Rep. Invert. Anim. Vineyard Sd., in Rep. U. S. Fish Com., i, pp. 443, 668, pl. 
25, fig. 178, 1874 (auth. cop., p. 374). f 
FIGURE 8. 
Fig. 8. ee Shell long, conical, slender, gradually tapering, 
acute, slightly curved near the end, thin, trans- 
parent, white, and almost glassy, with the surface 
smooth and polished, without sculpture. Animal 
mostly white, fins obovate, broadly rounded at 
the outer end, bearing the slender, acute tenta- 
cles on the anterior edge, near the middle. Length, 
11°5™™; diameter, 2°™, 
G 
C 
De 

Taken at the surface, in the afternoon, among 
Salpe, off Gay Head, mouth of Vineyard Sound, 
Sept. 9, 1871. 
Styliola recta (Lesueur, MSS.) Blainv. 
Styliola recta Blainv., Man. Malac., 1825. 
Verrill, Proc. U. S. Nat. Mus., iii, p. 393, 1880. 
Creseis acicula Rang, Ann. des Sci. Nat., I, xiii, p. 318, pl. 17, fig. 6, 1828. 
Creseis clava Rang, Ann. des Sci. Nat., I, xiii, p. 317, pl. 17, fig. 5, 1828. 
Creseis acus Esch., Zool. Atlas, iii, pl. 15, fig. 2, 1831. 
Cleodora acicula Rang, Hist. Nat. Pterop., p. 56, pl. 7, figs. 5, 7, 1852. 
This is an exceedingly slender, elongated, and delicate species, 
Taken near George’s Bank, N. latitude 41° 25’, W. longitude 65° 
5' to 65° 30’, September 15, 1872, at surface, by Messrs. 8S. I. Smith 
and O, Harger, on the “ Bache.” 
