192 EET. E. T. LOWE's LIST OF SHELLS 



beyond the last volutiou ; sutural groove distinct, deep, concave, 

 narrow, its lip or edge acute, mostly incurved ; shoulder either a 

 little prominent, angular, and pointed, or altogether evenly rounded, 

 incurved, and sloping backwards at top ; aperture mostly reaching to 

 or beyond the level of the apex, broad, oblong, sometimes a little 

 effuse; outer lip mostly nearly or quite straight, rarely arcuate; inner 

 lip distinct, broad, and defined. Colour plain cinereous-buff, more 

 or less washed with rich coffee-brown or fulvous, rarely mottled. 

 Surface coated more or less with a shining arenulato-granulate or 

 pustulate golden-fulvous glaze. Shell 4-5| in. long, and 2-^-3 wide. 

 a. angitlata; shoulder or top of outer lip angular or slightly 

 pointed ; keel or edge of suture erect or subreflexed ; sutural 

 groove sometimes a little broad and open ; shape oblong or sub- 

 ventricose, with the aperture subeffuse, and outer lip subarcuate 

 or prominent downwards ; inner lip slightly thickened and well 

 defined. — Valuta ruhiginosa, Swains. Exot. Conch. Cymba riihigi- 

 nosa, Sowerb. Sp. Conch. 6. ff. 1 a,h,c,d; Mart. t. 70. f. 765. 

 Hah. Mogador, Lowe. 



Varies with the spire and mammilla longer and distinctly pro- 

 duced beyond (Swains. I. c. ; Sowerb. f. 7 h), and ^ith the spire 

 shorter, and the mammilla shorter or barely longer than the outer 

 lip or aperture (Sowerb. ff. 7 a,c,d\ Mart. I. c). To this latter 

 form belongs the Mogadorian shell. 



/3. incurva ; shoulder rounded and incurved ; keel or edge of 

 suture inflexed; sutural groove deep and narrow, contracted by 

 its incurved edge ; shape subcylindric, with the lateral outlines 

 straighter and more parallel for the most part than in a, the aper- 

 ture mostly narrower, and less or not at all effuse ; the outer lip 

 nearly or quite straight, and the inner lip somewhat more difiiise 

 and broader or less thickened. — Voluta porcina, D'Orb. ! in W. B. 

 Hist. Can. Moll. p. 85 (not Lam.). V. prohoscidalis, ejusd. p. 86, 

 probably (not Lam.). Le Philin, Adans. 48. t. 3. f. 2 ; Buouan. 3. 

 f. 2. V. Nejptuni, D'Orb. ! type in collect. 



Hah. Mogador, and coast of Africa opposite Lanzarote, Wehh, 

 Ltoxoe. 



In all my examples of /3, as in Adanson's and Buonanui's 

 figures, the tip of the mammillary cone is almost exactly level 

 with, or only very slightly prominent above, the edge of the 

 sutural groove or top of the outer lip. 



Lamarck mixes up the synonyms of this species with those of 

 his Valuta porcina, from which, as from V. prohoseidalis, it is cer- 

 tainly very distinct. Dr. Gray has united it with Valuta Cymhium, 



