BY RALPH TATE, F.G.S. ETC. 405 



quantum sciam descriptam, neque mild innotuit unde sit ; est enim 

 haec: Cytlterea menstnialis, m. testa suborbiculata, convexiuscida, 

 anterius compressa, longitudinaliter leviter striata, obsolete decussata, 

 livido-fusca, linen angularihus eruentis s. lividis transversim seriatis 

 picta; margine intus crcnato ; ano linear i-subulato ; vulva prof unde 

 impressa, patents. Long. 2J inches, alt. 2 inches 3 lines, crass. 

 10*5 lines. 



[This is also referred to Cuneus by Deshayes.] 



Venus gravescens, No. 247, p. 43. 



V. testa cordato-trigona, turgidula, solida, ponder osa, albida, radii's 

 tribus latis lividis picta, obsolete transversim striata, lamellis transversis 

 validis surrectis distantibus (decern), antice incisis et in lobum s. 

 auriculam product is cincta ; margine intus crenulato ; ano subrotundo- 

 ovato ; pubis oblong ae depressae labiis incumbent ibus. Long. 15, lat. 

 14, crass. 9 lines. 



Nab. "Western Coast. 



Allied to V. fasciata, Donov. 



[This species is referred to Chione by Deshayes.] 



Venus coelata, No. 248, p. 43. 



V. testa cordato ovata, fulva, racliis raris latcscentibus lineisve 

 angularihus subseriatis rujis picta, cingulis tenuibus confer tissimis 

 numerosis (ad 36) cincta, interstitiis longitudinaliter porcatis ; 

 margine intus crenulato ; ani lanceolati labris jH'orninulis , compressis; 

 pube oblong o-lineari. Long. 6, alt, 5*3, crass. 3 lines. 



Sab. "Western Coast. 



Has some affinity to Venus gallina, Linn. 



[It is cpaoted by Deshayes as Chione coelata.'] 



Mactra decussata, No. 261, p. 46. 



M. testa elliptico-ovata , subtrigona, inaequilatera, alba, striis 

 tenuissimis decussata, antice breviore, postict angulata, area ibidem, 



