NEPTUNEA TENITTSTRTAIW. 521 



found everywhere and in considerable abundance though it is less common in the 

 Coralline. It varies in size, form, and the length of the shell, which in some of 

 the Belgian specimens reaches as much as 90 mm. It is not at all common in the 

 Icenian Crag, in which it has only been obtained rarely from three or four localities. 

 My fig, -4 corresponds to the var. crassa of Nyst, fig. 5 approaches more nearly the 

 B. ebnrnea of Prof. Sars, but there are many intermediate forms, some of thein 

 being without distinct sculpture. As a rule the spiral sculpture is fine and 

 delicate in the earlier whorls, often becoming coarse and strong in the lower ones, 

 as shown in my fig. 6. 



Genas NEPTUNEA, Bolten {continaed from Vol. I, p. 370). 

 Neptunea tenuistriata, F. W. Harmer. Plate XL VI, fig. 13. 



1918. Neptunea tenuistriata, F. W. Harmer, Plioc. Moll. Gt. Brit., vol. i, pt. iii, p. 3(39, pi. xxxvii, 

 figs. 1. 2. 



Dimensiojis. — L. 40 mm. B. 24 mm. 



Distribution. — Butleyan Crag : Hollesley or Butley (additional). 



RemarJcs. — In Vol. la specimen from Bridlington was figured under the present 

 name which seemed to correspond with one of the Newfoundland species, Fustts 

 striatus (Reeve), which I had received from my friend Prof. Sparre Schneider. 

 Up to that time it had not been reported from the Crag. As to the identification 

 of the Crag fossil with it I think there can be no doubt. The latter belongs to my 

 own collection. 



Ge)tm MUREX (continued from Vol. T, p. 339). 

 Murex Harrisoni, A. Bell. Plate XLVII, fig. 2. 



1915. Murex Harrisoni, A. Bell, Geol. Mag. [6], vol. ii, p. 167. 



Specific Characters. — Shell small, thick and solid, ovato-turreted with a wide 

 base ; whorls convex, the last much the largest ; ornamented by 7 irregular ribs, 

 the labial one thickened, flat, varicose and much expanded ; spire short, rapidly 

 diminishing in size upwards ; suture deep ; mouth oval ; outer lip wide, straight, 

 rectangular both above and below, flattened and enlarged at the base, denticulate 

 within ; inner lip strong, reflected on the pillar ; canal open, narrow, slightly 

 oblique. 



Dimensions. — L. 24 mm. B. 13 mm, 



Distribution. — Not known living. 



Fossil : Isle of Man (Cranstal Point), 



