713 



V. testa subrotundata, crassiuscula, grisea fusco-uigrescente va- 

 negatu, costellis ad latera majoribus omniuo squamuliferis anticc 

 pracipue radiata, intus postice et ad marginem violacea ; latere 

 autico breyi; 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 are 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. 



38. Venus Stutchburii (pi. civ. f. 50, 51), Gra?/, in Wood's 

 Suppl. pi. 2. f. 4. V. Zelandica, Qtio?/, 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 costelhs crenulatis concentri- 

 cis cincta. 



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

 crossed by undulating riblets, wliich 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 F. cardioides is a variety of this species or of V.pectorina. 



New Zealand. 



29. Venus Columbiensis (pi. civ. f. 53, 54), Sowerhv, Pro 

 Zool. Soc. 1835, p. 21. ^ 



"V. rotundato-elliptica, crassa, cinereo albidoque variegata, 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 intermedise costis sublsevibus, intus albicante." 



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

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

 rows of scale-Hke prominences. 



St. Elena, West Columbia. Cuming. 



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

 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- 

 cuhs altcrnis minoribus radiata, striis elevatis conceutricis cancel- 



