Quarterly Journal of Conch 



Collected by Capt. Cawne Warren, in lat. 50° 23' 5" N. and 

 long.64 o' 4" \\ . and presented by him to the Free Public Museum 

 Liverpool. 



Long. 20 mill, Diam. 8. A giant (Volvarina.) 



This is a large form of a type already well known, such as 

 M. gracilis, C. B. Ad., - M. bibalteata, Reeve, pi. 20, fig. 99, and 

 M. siiavis, Sow., Journ. de Conch., Vol. 8., p. 126., pi. 2., fig. 13. 



Marginella callosa, n. s. 



Marg. testa oblongo-ovata, superne tumida, callosa, albida aut 

 ' spadicea, pallide fasciata, crassa, nitente, spira'brevi valJc a 

 columella gnadriplicata, ad basin tumida, columella et apertura 

 incrassata,fauce alba. 

 Hal. Red Sea. 



I only know of four specimens of this shell, three in Mr. Keen's 

 collection and one in mine. 



It somewhat resembles the Oliva micans, Solander, having a thick 

 callous spire. 



The Marginella phrygia, Sow., and M. calculus, Redf. 



M. calculus, Redf., M. guttata, Swainson,* M. maculosa, Reeve 

 as per Kiener, and probably the M. phrygia, Reeve. 



Reeve says in alluding to this last named shell: — Allied to the 

 M. maculosa of the West Indies. 



This shell is allied to the M. interrupto-lineata, Megerle. = 

 M. interrupta, Lam. M. obesa, Redf, M. similis, Sowerby, and 

 .)/. imbricata, Hinds. 



M. phrygia, Sow., is a very different shell, allied to the M.fiumen- 

 tum, Sovr.,Af. sagittata, Hinds, and M. catena ta, Montg. 



The markings are similar; in one of the varieties of M. calculus, 

 the rings are like the rings in M. phrygia; thus confusion has arisen. 



The M. maculosa, Kiener, is the M. muralis, Hinds, as pointed 

 out by Petit, Journ. de Conch., 185 1, p. 55, and since by Redfield. 



This name is pre-eccupied by Dillwyn. 



