7(38 



A small, square, tumid species, which has a purple mark at 

 the umbones, and is purple within and at the posterior angle, ra- 

 diately striated and obscurely laminated near the margin, which 

 is smooth. 



Ilab. ? Cuming's collection. 



20. Venerupis monstrosa (pi. clxiv. f. 13), Chemn. (Venus) 

 vii. 50. pi. 4-2. f. 445, 446. 



V. testa ovata, inaequivalva, depressa, pallida ; antice et in medio 

 decussatim striata, postice irregulariter concentrice laminata; valvae 

 dextrae laminis valde exfoliatis et incrassatis. 



Of an oval form, striated longitudinally and concentrically in 

 front, irregularly laminated at the back, where the spreading and 

 thickening of the laminae in the right valve make it overwrap the 

 left. 



Island of Nicobar, Philippines. Cuming. 



21. Venerupis Cumingii (pi. clxiv. f. 12), Deshayes, Pro. 

 Zool. Soc. 1853 (ined.). 



V. testa ovata, extus grisea, intus castanea, inaequivalva, sub- 

 depressa, radiatim costellata ; concentrice laminis concentricis cre- 

 nulatis cincta ; valva dextra laminis ad marginem valde exfoliatis 

 valvam sinistram superante ; margine laevi. 



Finely sculptured, with radiating ribs and fringed concentric 

 laminae ; grey without, and of a reddish-brown within ; remarkable 

 for the manner in which the left valve is overlapped by the right, 

 as in V. monstrosa. 



Hob. ? Cuming's collection. 



22. Venepupis Chinensis (pi. clxv. f. 29), Deshayes, Pro. 

 Zool. Soc. 



V. oblongo-quadrata, depressa, alba, postice angulata, laevi, la- 

 minis erectis crassiusculis postice angulatis ad margiiies exfoliatis 

 cincta, margine dorsali recto excavato, margine ventrali intus 

 laevi. 



Of an oblong square depressed form, rather inequivalve, poste- 

 riorly angulated; white, with distant, broad, erect, smooth, thick 

 laminae. 



Plo-Plo, Island of Panay, Philippines ; on rocks at low water. 



Cuming. 



23. "Venerupis rugosa (pi. clxv. f. 25), Deshayes, Pro. Zool. 

 Soc. 1853. 



