228 PUNCTURELLA. 



caused by its being covered by the mantle of the animal. (Nevill.) 

 This is a species of doubtful position. The description of the 

 sculpture suggests that it may belong near Megatebennus (Ambly- 

 chilepas) concatenata C. & F. 



G. ? canalifera Nevill. PI. 41, fig. 37. 



Shell ovate-elongate, narrowed in front and turned up at the end ; 

 rather solid, ornamented with unequal radiating stria? and rough- 

 ened with concentric lamellae; pale brownish, radiately marked by 

 a few elongated obscure patches ; foramen long, subcentral, rounded 

 in front and behind ; inside whitish ; margin of the aperture rather 

 obtuse, nearly simple, minutely crenulated, insinuated in front; 

 margin of the foramen a little thickened, rather obtuse. Length 

 14, breadth 7i alt. 41 mill. (Nev.) 



S. province Ceylon. 



F. canalifera G. & H. Nevill, Journ. Asiat. Soc. Bengal, xxxviii, 

 p. 163, t. 17, f. 13. 



Easily distinguished from any other species of Fissurella by the 

 curious way in which the shell, at the anterior end, is turned up and 

 contracted, thus forming a sort of canal interiorly ; the black 

 stripes in position also seem tolerably constant, there being two 

 broad ones radiating from the posterior end of the foramen, and the 

 same number but narrower and more indistinct, from the anterior 

 end. (Nevill.) 



Genus PUNCTURELLA Lowe, 1827. 



Pancturella Lowe, Zoological Journal iii, p. 77, 78, type Patella 

 noachina L. — A. Adams, P. Z. S. 1851, p. 227. — Forbes & Hanley 

 Brit. Moll, ii, p. 473, 1853.— Woodward, Manual Moll., p. 150, 

 1853.— Dall, Bull. Mus. Comp. Zool. xi, p. 74, 1881, and of 

 Fischer, Watson, Jeffreys and others. — Cemoria Leach (MS., 

 1819), Moll. Gt. Br. (Gray's edit), p. 213, 1852, and of H. & A. 

 Ad., Gen. Rec. Moll, i, p. 450, and of some others, not Cemoria 

 Risso, 1826. — in part Diodora Gray, J 840 (no descr.), not Diodora 

 Gray, 1821 (=Glijphis]uv.). — Diadora "Gray" Blainv., Manuel 

 i, p. 501 (no descr.). — Sipho Brown, 111. Conch. Gt. Br., t. 36, f. 14- 

 16, 1827, not Sipho Klein, Fabr. nor Morch. 



The name Puncturella has been adopted by all recent writers on 

 this genus. Dr. Dall (I. c.) has discussed the synonymy in detail. 



The genus consists of small conical shells having a spirally re- 

 curved apex either persistent or absorbed in the adult, the fissure 



