70 



ecqualibus, scabroso-sulcatis, posticis parvis, obtusis ; anticis 

 niagnis, acutis; costis immerosis^ parvis, scabris^ sub-angulatis ; 

 colore, miniacco, radiis septem, albo piirpurcoque macvilatis : 

 uinbonibus albis, purpureo, i ubroque maculatis : variatpurpureo, 

 nigro maculato. Long 1, 20, lat 0, 42 ; alt 1, 45. ; poll. 



A rather flat, obliquely-oval, irregular species, with unequal 

 auricles and numerous serrated close set ribs. The vmder 

 valve is rather more ventricose than the upper. The colour 

 is scarlet with seven rays of interrupted white, mottled Avith 

 purple ; near the umboncs the shell is white, mottled with 

 purple. Collection of the Rev. F. J. Stainforth. 



Mr. Sowerby has a purple variety. 



76. P. SQUAMATUS. (pi. xiii. f. 57, 58.) Gmel. p. 3329. 

 Lister. Conch, t. 183. f. 20. 



T. rotundato-sub-trigona compressa, irregulariter sub-tequi- 

 valvi ; valva sinistra paululum convexiori ; auriculis magnis, 

 costatis, aculeato-squamiferis, antica lata, sub-acutangulata ; 

 costis alterius valvte quinque ad sepiem, latis, kevibus, rotun- 

 datis, aculeato-squamiferis, irregularibus, quindecim minoribus, 

 interstitiaiibus, interstitiis minutissime punctatis, alterius cos- 

 tis irregularibus, squamiferis, insequaliljus ; colore brunneo- 

 rufcscente, costis magnis squamiferis rubris; variat testa alba. 

 Long. 1. 75.; lat. 0. 50.; alt. 1. 85.; poll. 



A smooth tlattish shell, with from 5 to 7 broad ribs, with 

 large elevated scales, the intervals being filled up v/ith several 

 narrow ribs in each. The ground colour is dull clouded 

 brown, relieving the principal ribs, which are red. An 

 inspection of the figure in Lister, refened to by Gmelin, will 

 remove all doubts as to the identity of our shell, v.hich has 

 been erroneously figured in Reeve's " Conchologia Systema- 

 tica,^^ as Rastcllum, Lam. The white variety is figured by 

 favour of Miss Saul. 



77. P. Brueii. (pL XX. f. 241, 242.) Payr. MolL p. 78. 

 pi. 2. f. 10, 11. 



"P. testa sub-rotundata, cequivalvi, s ib-scquilatera, flava; 

 radiis valvee superioris variis, alternis minorilnis, in longum 

 lineatis et tenuiter squamosis ; radiis valvre inferioris binis, 

 etiam lineatis et papillosis ; auriculfi altera minima; novem 

 ad undecim lineas lata." 



" Hab. les Golfes de Sagone, d'Ajaccio, de Valineo, de Porto 

 Yecchio, Peu abondant." 



The rays of the upper valve alternate irregidarly in size, 

 they are slightly annulose or papillary ; those of the lower are 

 also irregular and papillary, but are disposed in pairs. The 



