725 



y. testa ovata, pallidissime fulva, subcompressa, laminis latis 

 pallide coloratis extautibus utrinque ad latera interruptis turn uni- 

 lobatis cincta ; latere postico producto, oblique subtruncato, mar- 

 giue dorsali plamilatim excavato ; latere antico brevi ; lunula lae- 

 vigata^ impressa. 



The broad concentric laminae are interrupted for a space, and 

 then terminate in a broad square lobe at each side. The form is 

 rather flat and oval. 



65. Venus Cumingii (pi. clvii. f. 122), Sowerhyjvm. 



y. testa rotundata, ventricosa, alba, laminis latis crenulatis 

 palhde rufo-strigatis tenuibus utrinque ad latera interruptis turn 

 unilobatis cincta; latere postico subtruncato; margine dorsali 

 planulatim excavato, breviusculo ; latere antico brevi ; lunula laevi- 

 gata, impressa ; margine intus minute crenulato. 



Rounder and shorter than V. calophi/la, with the lamina? inter- 

 rupted and lobed in the same manner. They are prettily wrinkled 

 and coloured with light pink rays. 



Specimen in Mr. Cuming's collection from Port Jackson. Jukes. 



66. Venus plicata (pi. clx. f. 174), Gmelin, 3276. 



V. testa compresso, subcordata, alba, pallide fulva, partim ra- 

 bro tmcta, postice subquadrata, antice brevi ; laminis concentricis 

 elevatis, tenuibus, antice insequahter expansis, postice angulatim 

 bilobatis et productis ; margine dorsah arcuato, planulato ; lunula 

 Isevi, impressa ; margine intus crenulato. 



The shell is of a flattish-cordate form, rather square at the back, 

 and the laminae very deep, unequally expanded at the anterior 

 side, and posteriorly produced into two rather tortuous, squarish, 

 elevated, distant lobes. 



West Africa. 



67. Venus lamellata (pi. clx. f. 175), Lamarck, Anim. sans 

 vert. Venus, no. 28. 



V. testa oblongo-subquadrata, compressa, pallide fulva, partim 

 rubro tmcta ; laminis elevatis, concentricis, subtus striatis, ad mar- 

 gmes subreflexis, insequahter lobatis, postice quadratis, productis, 

 bilobatis; latere postico angulato, truncato; margine dorsali la- 

 minate, planato ; lunula laminata ; margine interno minutissime 

 crenulato. 



