MUSEUM OF COMPARATIVE ZOOLOGY. 141 



but is less asymmetrical. I have not found any species described or figured 

 which is so small, slender, and lucid as this one, though there are a number 

 of species which approach it in general outline on a larger scale. 



Marginella torticula Dall. 



Plate XIX. Fie. 7. 



Marginella torticula Dall, Bull. M. C. Z., IX. p. 73, Aug. 25, 1881. 



Habitat. Station 5, lat. 24° 15' N., Ion. 82° 13' W., in 152 fms., soft coral 

 ooze ; also in 229 fms., near Havana, bottom temperature about 50° F. These 

 two hauls seem to have had but one station number. 



The number of specimens obtained, and their uniformity of character, suffi- 

 ciently indicate that the bent axis of this species is not an individual or 

 pathological character. The color is about the same as in if. succinea and 

 M. Redfieldii. 



Section? VOLVARINA Hinds. 



Volvarina avena Valenciennes. 



Marginella avena (Val. MS.) Kiener, Coq. Viv., p. 17, pi. vi. fig. 24, 1834. 



Marginella avenacea Deshayes, in Lam., X. p. 455, 1844. 



Marginella Beyerleana Bernard!, J. de Conchyl., IV. p. 149, pi. v. figs. 15, 16, 1853. 



Marginella livida Reeve, Condi. Icon., pi. xx. fig. 100, 1865. 



Marginella avena Redfield, Cat. Marg., p. 223, 1870. 



Dredged dead off Cuba, in 200 fms., and at Station 2, in 805 fms., probably 

 from shallower water. 



Volvarina avena var. guttula Reeve. 



Marginella guttula Reeve, Conch. Icon. Marginella, pi. xx. fig. 101, 1865. 



Dredged living off Sombrero Island, in 72 fms. Mr. Tryon confirms my 

 identification of the above " species," described by Reeve without a habitat, and 

 evidently a variety of M. avena. 



Volvarina albolineata Orbignt. 



Marginella albolineata Orbigny, Moll. Cuba, II. p. 99, pi. xx. figs. 27-29, 1845. 

 Marginella varia (partly) Sowerby, P. Z. S. 1846, p. 97. 



Habitat. Barbados, 100 fms. ; Sigsbee, off Havana, in 80 fms. 



Volvarina varia of Sowerby comprised two species, according to Messrs. Red- 

 field and Tryon ; namely, the Californian species known to Carpenter and the 

 West Coast conchologists as V. varia (which Tryon, following Redfield, con- 



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