228 



Jiciem Icevigatam subradiata : area ventrali aut angusta aut 

 mil la, transversim subplicata ; margine Jorsali elongato, sub- 

 incurvato, longiore : margine ventrali subrecto, subcequali : 

 margine ])ostico superne breviter retuso, deinde subrecto. 



Var. ? Testa cuneiformi, purpureo-fuscescente late radiata, non- 

 numquam rvfa radiis saturatioribus picta ; squamis nullis ; 

 plicis magis conspicuis : margine postico convexiore. 



Long. 2£, lat. 6| poll. Var. long. 6, lat. 9£ poll. 



Hab. Insnlse Indicse. 



Mus. Hanley, Cuming (var.). 



8. Pinna exjglypta. P. testa parva, pertenui, compressa, 

 carina centrali obtusa infirmata, aniice fulva, postice saturate 

 olivacea, mutica, costellis radiantibus permvltis {minimum 20) 

 depressis convexis, et rtigis transversis lamellaribus undique 



subcancellatim sculpta : area ventrali nulla : margine dorsali 

 incurvato, maxime longiore: extremitate postica oblique sub- 

 truncata. 



Long. (t. junioris) 2f, lat A\ poll. 



Hab. lnsulse Oceani Indici. 



Mus. Hanley, Cuming. 



9. Pinna D'Orbignyi. P. testa cuneiformi, sublanceolata, 

 ventricosa, cornea, limdo-purpurascente subradiata, carina 

 centralis experte, radiatim squamifera, haud autem costata ; 

 squamis magnis, fornicatis, erectis ; superjicie aliter laevigata : 

 area ventrali inconspicua, haud plicata : margine dorsali sub- 

 concavo : margine ventrali subcequali, sinuato : extremitate 

 postica convexo-subtruncata, haud obliqua. 



Long. 2i lat. 4f poll. 



Hab. ? 



Mus. Cuming. 



Of this I have only seen a single example, and that possibly a 

 young one ; it is not, however, remarkably fragile. Besides the ir- 

 regular squamation near its ventral edge, the area adjacent to which 

 is evidently squamous where not rubbed, there are about ten distinct 

 rows of coarse radiating scales, but only faint indications of distant 

 ribs near the beaks. 



10. Pinna Menkei. P. testa cuneiformi, scepe subelongata, 

 satis subventricosa, carina centrali obtusa infirmata, cornea, 

 Uvido-fuscescente zonata vel umbrosa, undique costata ; costis 

 multis {circiter 14-17), subdepressis, rotundatis, superne con- 

 fertis, inferne subremotis, plerumque (exemplis attritis) Icevi- 

 gatis, postice autem, in exemplis illcesis, squamis fornicatis latis 

 erectis fragilibus subremote instructis : area ventrali aut an- 

 gusta aut nulla : margine dorsali longiore, subrecto aut con- 

 cavo : margine ventrali antice incurvato, postice convexo : 

 extremitate postica obliqua arcuata. 



Long. 5|, lat. 10| poll. 



Hab. Portus Jacksonianus. 



Mus. Hanley, Cuming. 



