768 



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

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

 diately striated and obscurely laminated near the margin, which 

 is smooth. 



Hub. ? Cuming's collection. 



20. Veneeupis monstrosa (pi. clxiv. f. 13), Chemn. (Yenus) 

 vii. 50. pi. 42. f. 445, 446. 



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

 decussatim striata, postice irregulariter concentrice laminata; valvse 

 dextrse 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 laminse in the right valve make it overwrap the 

 left. 



Island of Nicobar, Philippines. Cuming. 



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

 Zool. Soc. 1853 (ined.). 



Y. testa ovata, extiis grisea, intiis castanea, insequivalva, sub- 

 depressa, radiatim costellata ; concentrice laminis concentricis cre- 

 nulatis cincta; valva dextra laminis ad marginem valde exfoliatis 

 valvam sinistram superante ; margine Ifevi, 



Pinely sculptured, with radiating ribs and fringed concentric 

 lamina? ; 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. 



Hab. ? Cuming's collection. 



22. Yenerupis Chinensis (pi. clxv. f. 29), Beshayes, Pro. 

 Zool. Soc. 



Y. oblongo-quadrata, depressa, alba, postice angulata, Isevi, la- 

 minis erectis crassiusculis postice angulatis ad margines exfoliatis 

 cincta, margine dorsali recto excavato, margine ventrali intiis 

 Isevi. 



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

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

 laminse. 



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

 Cuming. 



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

 Soc. 1853. 



