auriculis valde insequalibus, squamoso-sulcatis, complanatis ; 

 anticis latis, elongatis ; sinu magno : costis 25, concinnis, sub- 

 distantibus, rotundato sub-quadratis, squamas, distantes, 

 erectas, acutas ferentilDus : colore rubro, macuhs albis 

 elongatis, ad auricula et ad latera fasciatim variegato. Long. 1 . 

 20.; lat. 0. 35.; alt. 1. 35.; poll. 



A more compressed, regular, and neat shell than P. vanus. 

 In the collection of Mr. Cuming. Smgapore. 



98. P. SANGUINEUS (pi. xix. f. 221-2) Linn, accordmgto 



Gmelin. 



T. ovali, sub-compressa, regulari, cequivalvi, sub-sequilaterali ; 

 auriculis iucequalibus, muricato-sulcatis, marginibus elevatis ; 

 anticis elongatis ; costis 25, crassis, sub-angulatis, squamas, 

 mumerosas, erectas, angulatas, parvas, ferentibus, margme 

 dentatis ; interstitiis angustis, planis; colore rubro, sangumeo, 

 albo-variegato seu griseo, albo nigroque variegato; mtusfulvo. 

 Long. 1. 70. ; lat. 0. 60. ; alt. 1. 95. ; poll. 



The author cannot doubt the identity of the red variety of 

 this species, with the figure quoted by Gmehn. The dark 

 variety, which is variegated black and white, is new to our 

 collectors, Mr. Cuming having brought a number of speci- 

 mens from the Philippine Islands. The ribs are angular, and 

 much thicker than in P. varius, and the interstices are nar- 

 rower than the ribs. 



99. P. MiNiACEUS (pi. XX. f. 247.) Lam. Amm. sans vert. 



vol. vi. p. 67- . ^ . . V • ru 



T. ovali, compressa, subceqmvalvi ; auriculis msequaiibus, 

 minute scabroso-sulcatis : costis 30, rotundatis, annulatis, 

 ad latera minutissime serratis ; interstitiis planis. Colore 

 miniaceo, maculis albis, undulatis variegato, costis infra 

 macules minute concentrice lineatis. Long. 0. 90; lat. 0. 32 ; 



alt. 1. 05 ; poll. 1 r^ -i, 



A small oval species, with unequal auricles, and 30 ribs 

 which are minutely serrated at the sides, and annulated by 

 obliterated scales. The colour is red, variegated by white 

 undulating patches, beneath which the ribs are crossed by 

 minute concentric lines. Mr. Cummg^s Cabinet. 



100. P. NivEUS. (pL xix. f. 223-4.) ?^ 



T, ovali, sub-tenui, ventricosa, valva sinistra paululum 

 majori ; auriculis insequalibus, anticis majuscubs : costis 40. 

 Icevibus, quadratis; spinas distantes, erectas, acutas ferentibus: 

 interstitiis planis. Colore albo (nonnunquam occurrit rubro 

 angulatim variegato?) Long. 1. 50; lat. 0. 60.; alt. 1. 70.; 

 poll. 



