713 



V. testa subrotimdatn, crassiuscula, grisea fusco-nigresceiite va- 

 riegata, costellis ad latera majoribus omnino squamuliferis antice 

 praecipue radiata, intus postice et ad marginem violacea ; latere 

 antico brevi ; lunula fusca, striata ; latere postico subtruncato ; 

 area dorsali excavata, planulata, nigro-literata. 



In this species, which is rounder than the preceding, the ra- 

 diating ribs arc crossed by scales which are not continued in the 

 interstices. The markings are dark and variegated, and the inside 

 is painted with purple at the back and near the margin. 



West India Islands. 



28. Venus Stutchburii (pi. civ. f. 50, 51), Gray, in Wood's 

 Suppl. pi. 2. f. 4. V. Zelandica, Quoy, Ast. t. 8. f. 5, 6 ? 



V. testa ovali, oblique cordata, alta, crassa, ventricosa, fulva, in- 

 tus postice purpurea, radiatim planulatim costata, costellis postice 

 subobsoletis, antice et prope umbones costelbs crenulatis concentri- 

 cis cincta. 



A very ventricose shell, with the radiating ribs broad and flat, 

 crossed by undulating riblets, which only reach from the anterior 

 to the middle of the shell, excepting near the very tumid umboes, 

 where they reach all across at regular intervals. I am doubtful 

 whether V. cardioicles is a variety of this species or of V. pectoriua. 



New Zealand. 



29. Venus Columbiensis (pi. civ. f. 53, 51), Sowerby, Pro. 

 Zool. Soc. 1835, p. 21. 



" V. rotundato-elliptica, crassa, cinereo albidoquc vanegata, ra- 

 diatim costata ; costis plurimis, planulato-rotundatis, quam inter- 

 stitia duplo latioribus; latere antico breviore, costis decussatim 

 squamosis, squamulis brevibus, obtusis ; lateris postici costis ru- 

 gosis ; partis intermedias costis sublaevibus, intus albicante." 



This species stands alone, with its deep grooves and broad flat- 

 tened radiating ribs, which are crossed at the sides by concentric 

 rows of scale-like prominences. 



St. Elena, West Columbia. Cuming. 



30. Venus pectorina (pi. civ. f. 56, 57), Lamarck, Aniin. 

 sans vert. (Venus) no. 15. Var. V. cardioides, Lamarck, no. 18 ? 



V. testa subtrigona, ventricosa, crassa, fulva, postice et ad aream 

 dorsalem fusco angulatim maculata, intus alba, costellis acutius- 

 culis altcrnis minoribus radiata, striis elevatis concentricis cancel- 



