48 BRODERIPIA. 



to it in his Monograph in the Thesaurus, having transposed the 

 figures with those of B. cumingi. I suppose Sowerby to be correct in 

 his figures. The measurements of my specimen correspond with 

 those given by Broderip. It may be noted, however, that that author's 

 measurements of B. iridescens show it to have been more convex than 

 the specimen of that species before me. Nevill has recorded B. 

 rosea from South Ceylon. 



B. NITIDISSIMA Deshayes. PI. 1, figs. 15, 16. 



Shell patella-shaped, ovate-oblong, symmetrical ; apex subcentral ; 

 radiately ribbed, the ribs strong, convex, simple, whitish, the inter- 

 stices irregularly marbled with brown ; interior vividly pearly, with 

 a rather large central spot of dull white notched in front, and 

 bounded by the whitish muscle-impression. The rest of the inside 

 has a nacre of unequaled brilliancy with opalescent reflections. 

 The largest specimen measures: length 9, breadth 7, alt. 3 mill. 

 (Deshayes.^) 



Island of Reunion. 



B. nitidissima DESH., Moll, de File de la Keunion, p. 69, t. 6, f 

 20-22, 1863. SOWERBY, in Conch. Icon, xix, f. 3. 



B. EXIMIA Nevill. PI. 1, figs. 9-11 ; pi. 2, figs. 38-40. 



Shell patella-shaped, oblong-oval in outline, elevated, with the 

 apex a little above the middle, and a little curved upward ; the pro- 

 file from apex to posterior margin is straight or a little concave, 

 from apex to anterior end it is a little convex. Surface radiately 

 ribbed, with shorter riblets inserted between the principal ones to- 

 ward the periphery ; whitish, more or less marbled with blackish- 

 brown. Interior with a small central opaque white callous, the rest 

 brilliantly pearly, opalescent. 



Length 9, breadth 6*, alt. 4 mill. ; length 10, breadth 7, alt. 4 

 mill. 



Southern Ceylon. 



B. eximia G. & H. NEVILL, Journ. Asiat. Soc. Bengal, xxxviii, 

 pt. 2, p. 69, t. 13, f. 7, 1869. 



Description and figures 9-11 of plate 1 are drawn from a speci- 

 men from the authors. The species seems to be very closely allied 

 to B. nitidissima but has less strongly developed riblets, is more 

 elevated, and the central white callus of the interior is smaller. 



