198 BIVALVE SHELLS. 



Venus papyracea, Gray, Ann. Phil. 25. 



Gray iii Wood, Ind. Test. Suppl. pl. 2. f. 8. 

 Clementia papyracea, Gray, Proc. Zool. Soc. 184/, p. 184. 



Sow.jun. Thes. Conch. p. 700. pl. 151. f. 155. 

 Yenus hyalina, Phil. Ahhild. und Beschr. p. 39. pl. 10. f. 6. 



Hab. Nova HoUandia. 



2. Clementia similis. 



C. testa subrhoraboidea, alba, minute sulcis oblique decussatis 

 granulata {Sow.jun.). 



Clementia similis, Sow.jun. Thes, Conch. p. 700. pl. 151. f. 154. 



Hab. ? 



3. Clementia granulifera. 



C. testa parva, Cl. papyraceae simili, sed rectiuscula, antice pau- 

 lulum subtruncata, postice haud tantum attenuata {Sow.jun.). 



Clementia granulifera, Sow. jun. Thes. Conch. p. 700. pl. 151. 

 f. 156. 



Hab. Insulse Philippinenses, in insula Zebu dicta. 



4. ClEMENTIA? VITREA. 



C. testa cordata, candida, diaphana, fragilissima, transversim 

 striata, plicata, rugosa, vulva intrusa, lanceolata, ano ovali- 

 oblongo. 



Mactrea vitrea, Chemn. Conch. Cab. xi. 219. pl.200. f. 1959,1960 

 (non Gray). 



Hab. Littus Coromandeliense ; insula Ceylon (C^mmVz). 



Fam. 2. CjrprinidsB. 



Animal ovatum, crassum ; pallium tenue, antice inferneque 

 simplex et apertum, postice clausum, ciliatum, in tracheis binis 

 terminatum ; trachea branchialis brevis, lata, compressa, in mar- 

 gine ciliata; trachea anahs angustior, conica, apice ciliis bre- 

 vibus coronata ; labiffi buceales elongatse, triangulares, angustae ; 

 pes magnus, compressus, linguiformis, margine inferiore denti- 

 culatus ; branchiaj magnse, quadrangulares, insequales, oblique 

 plicatae et tenue striatse, postice conjunctse. 



Testa sequivalvis, inajquilateralis, subcordiformis, epidermide 

 nitida induta; tres dentes cardinales inaeqviales, divaricati, in 

 utraque valva. Dens lateralis a cardine remotus in postico latere. 



