68 



valvse dextrse, numerosis, minute squamosis, inscqualibus : 

 colore svilphureo, costis alternis depressis, rubro maculatis. 

 Long. 0. 92. ; lat. 0. 30. ; alt. 1. ; poll. 



The only specimen of this shell with which we are ac- 

 quainted is in the collection of the Rev. F. J. Stainforth. 

 The ribs are scaly near the margin, the intermediate ones, wliich 

 are more depressed, have spots of a deep red colour in the 

 centre of the shell. 



69. P. TIGRIS, (pi. xiv. f. 95-6.) Lam. Anim. sans Vert. 

 T. sub-cequivalvi, oblique sub-trigona, sub-complanata, sub- 



scabrosa, interne valide costata; auriculis insequalibus, sulcatis, 

 posticis parvis, anticis acutangulatis ; costis 11, vahde sulcatis, 

 supra svib-angulatis, laterahlnis parvis ; interstitiis sulcatis, 

 latis: colore albo, superne lutescente, fasciis fuscis rufescen- 

 tibus, angulatim maculato, intus luteo, cardine nigro, macula 

 rosea ad basin auricvilse anticee in valva dextra. Long. 1.40; 

 lat. 0. 40 ; alt. 0. 60 ; poll. 



The right valve of this species is a little deeper than the 

 left, contour somewhat oblique and lengthened posteriorly, 

 having 1 1 longitudinally sulcated ril)s, the lateral one on each 

 side very slightly raised. The colour is nearly white, tinged 

 with yellow, marked with tiger-like stripes of dark reddish 

 brown, the inside is yellow with a black band on the hinge, and 

 a pink spot at the base of the anterior auricle of the upper valve. 



Indian Ocean, Lam. Isle Masbate, Philippines, Mr.Cvmiing. 



70. P. MADREPORARUM. (pi. xiv. f. 68.) Petit. 



T. oblique ovata, compressa, irregulari, radiatim striata : 

 auriculis insequalibus, anticis magnis, posticis parvis : costis 7 

 obsoletis, distantibus : colore all)0, nigro maculato. Long. 

 0. 66. ; lat. 0. 10. ; alt. 0. 80. ; poll. 



This small, white, flat, oval, black-spotted shell is found in 

 holes of Madrepore. It is from the lied Sea. 



71. P. Tegula. (pi. xiv. f. 90.) TFoocPs Index. 



T. sub-quadrata, irregulari, sub-eequivalvi, compressa, folia- 

 cea; auricuhs infequalilnis, anticis maximis, valvse dextrfe 

 antica vahdissiine emarginata; costis, valvEe sinistra, 9 ad 13 

 crassis, irregularibus, insequalibus ; squamas crassas, sub- 

 quadratas, ferentilms : interstitiis irregulariter radiatim sul- 

 catis ; costis, valvse dextrte, numerosis, squamiferis : colore, 

 fusco, pavdulum variegato. Long. 2. 85. ; lat. 0. 90.; alt. 3. 

 20.; polL 



More irregular and more spreading at the sides than the 

 following, with the ribs fewer and thicker ; the scales thicker 

 and more square, and the anterior auricles much broader. 



Japan. 



