Verrill and Bush — Marine Mollusca of the Bermudas. 539 



Caecum crispum, sp. iiov. 



Plate LXV. Fig. 3. 



Shell slender, thin, delicate, strongly curved, covered with very- 

 fine, incised, longitudinal lines, which in some places are wavy, 

 visible only with a lens. Toward the margin marked with several 

 annular incised lines, with delicate intervening cingula. Aperture 

 round, very oblique. Plug but slightly prominent, obtuse, with a 

 small rounded mucro near the outer margin. Color white. 



Length, 2.1°""; diameter, O.S'"'". 



In shell-sand, rare. 



Family RISSOID.a:. 



Alvania (Alvinia) pagodula Buq., Dautz. and Dollf. 



Bissoa Philippiana Jeffreys, Ann. Mag. Nat. Hist., xvii, 2(3 series, p. 183, pi. 



ii, figs. 4, 5, 1856 (not R. Philippiana Nyst, 1845, nor R. Philippii Aradas, 



1847). Name substituted but not adopted (Monterosato). Chenu, Manuel 



Conch., i, p. 307, f. 31(39, 1859. 

 Rissoa {Alvinia) pa godula'&uqvio J, Dautzenberg and Dollf . , Moll. Rouss., p. 296, 



pi. 56, figs. 23-26. 

 Alvania {Alvinia) Philippiana Monterosato, Conch., Med., p. 60, 1884. 

 Rissoa {Alvinia) jjagodula Tryon, Manual Conch., ix, p. 366, pi. 66, f. 55, 1887. 



Although specimens from Bermuda have but four whorls, they 

 so agree in the form and character of the sculpture with descriptions 

 of this species as to leave little doubt as to their identity. 



In shell-sand. 



Alvania (Alvinia) platycephala Dautz. and H. Fischer. 



Plate LXV. Fig. 24. 



Alvania platycephala Dautzenberg and H. Fischer, Mem. Soc. Zool., France, 

 p. 63, pi. xix, figs. 12, 13, 1896. 



In. shell-sand. 



Biissoa (Manzonia) Auberiana d'Orb. 



Plate LXV. Fig. 17. 



Rissoa Auberiana d'Orbigny, L'lle de Cuba, ii, p. 22, Atlas, pi. xi, figs. 34, 

 36, 1853. Chenu, Manuel Conch., i, p. 307, f. 2170, 1859. 



Rissoa {Alvania) Auberiana Morch, Syn. Moll. Mar., p. 54, 1875. 



Rissoa {Mangonia) Auberiana Tryon, Manual Conch., ix, p. 337, pi. 68, f. 85, 

 1887. 



In shell-sand. 



Trans. Conn. Acad., Vol. X. September, 1900. 



36 



