Verrill and Bush — Marine 3fcllusca of the Bermudas. 531 



Subgenus Mormula A. Adams, 1864. Type, M. rissoina A. Adams. 



Mormula A. Adams, Journ. Liuuaean Soc, vii, p. 1, 1864. Tryon, 1886, 

 in part. 



"Test subulate-turrited, rissoid, solid, thick, longitudinally plicate. 

 Aperture large ; inner lip spirally twisted ; outer lip somewhat 

 thickened within with a sharp edge. 



"A plicate form with spiral axis which is named Mormula.'''' 

 First species — M. rissoina A. Adams — taken for type. 



Brown-banded of seven (7) flattened whorls, with thick, undulating, 

 longitudinal plications, with the interstices very much Urate, 



" Very much resembling a Rissoina with the inner lip spirally 

 twisted and with the nucleus sinistral." 



Pyrgostelis (Mormula) pupoides d'Orb., and variety ischna Bush. 



Plate LXV. Figs. 31 and 23. 



Chemnitzia pupoides d'Orbigny, L'lle de Cuba, i, p. 324, Atlas, pi. xvi, figs. 



32-36, 1853. 

 Chemnitzia {Mumiola) pupoides Moxch, Syn. Moll. Mar., p. 164, 1875. 

 Turbonilla pupoides Tryon, Manual Conch., viii, p. 333, pi. 76, f. 36, 1886. 

 ? Odostomia phrikalea Watson, Challenger Report, xv, p. 498, pi. xxxii, f. 7, 



1885. 

 Turbonilla pupoides Bush, Proc. Acad. Nat. Sol., Philadelphia, pp. 153, 176, 



pi. viii, f. 5, 1899. 



Very common in the shell-sand. 



Odostomia Jonesii, sp. nov. 



Plate LXIV. Fig. 13. 



Shell white, smooth, polished, ovate, composed of five or six 

 whorls, besides the nucleus. Suture little impressed and sometimes 

 slightly canaliculate. Whorls slightly but evenly convex, the last 

 slightly diminished in diameter in some instances, giving the shell a 

 slightly fusiform appearance. Nucleus with a very small, upturned, 

 apical whorl. Aperture rather broad-ovate ; outer lip regularly 

 rounded ; columellar margin veiy oblique and sinuous, with a well- 

 marked oblique plication. Some specimens have a slight umbilical 

 chink, others have none. 



Length, 3,5™'" ; breadth, about 0.2">"\ 



