\ i 279 



f his -prrics, i> >iiflirirnt t> tix it- id-ntity hi-yond 



doubt. ( 'omparr A. diaphana Arad. 



Subgeims ROXANIA Leach, 1847. 



l-'<r anatomy see under A(u.<. 

 A. UTRICULUS Brocchi. PI. 28, figs. 28, 



Shell oval, with a tendency to become cylindrical, rather solid, 

 gemitransparent and glossy . sculpture, numerous spiral striae or im- 

 pressed lines, which are visible to the naked eye ; towards each end 

 they are stronger, and alternately large and small (sometimes two 

 or three smaller stria 1 between two of the larger size), and they are 

 throughout closely punctate in consequence of the interstices being 

 crossed by fine longitudinal strirc ; the spiral strife are much slighter 

 in the middle of the shell, which in the young is usually quite 

 smooth ; epidermis reddish-brown, it is chiefly persistent on the 

 spiral stria 1 , which are, therefore, darkly lineated ; color pale yel- 

 lowish or cream color, occasionally milk-white ; spire partly ex- 

 posed ; crown perforated, and obliquely encircled by a thick angu- 

 lar rim ; mouth as in H. namcnla, but narrower, its length ex- 

 ceeds that of the spire ; outer lip not much curved in the middle, 

 nor folding inwards ; it projects a little beyond the crown ; inner 

 lip slight ; pillar short, thick, and flexuous ; at its base is a rather 

 strong fold, which makes the lower part of the month appear chan- 

 nelled ; behind the pillar is a small and groove-like umbilicus 

 r.MX). Alt. 12, diam. 7i mill. 



Yar. obfont/<i. Smaller, longer in proportion to its breadth, and 

 more cylindrical (Jcffr.). 



Finmark to the (\niary 1*. : J/"///, ,-/<// 



But/a iiti'li'iihi* BROCCHI, Conch. Foss. Suhap. i, p. G.3, pi. 1, f. 

 6. Bnlln nfririilus JEFFR., Brit. Conch, iv, p. 440 ; v, pi. 95, f. 4. 

 />////</ n-uiirhii LEACH, in Flemings' Brit. An. p. L >( . FORBES 

 & HANLKV, Hist. Brit. Moll, iii, p. 533, pi. 104, f. 8, 9, and pi. V V. 

 f. 2 (animal;. Atijs mmffiii AD., in Thes. ii, p. 586, pi. 125, f. 

 115. Sown., in Conch. Icon. pi. 1, f. !. llnlbi punrturn JOHNSON, 

 Edinb. New Philos. Journ. 1828, p. 79. Kozaniu iiti-ini/u.* M< 

 Norn. Gen. e Spec. p. 14-~>. Hnlln int> r>/K<// ARADAS. 



A. PUNCTULATA A. Adams. Unfigured. 



Shell ovoid, solid, perforate, rounded at each end, decussate etri- 

 ate, transversely profoundly sulcate, the sulei strongly pun< 



