705 



4. Venus costellata (pi. cliii. f. 14), Hotoerby, Pro. ZooL 

 Soc. 1835, p. 42. Dosiiia antiqua. Gray. 



" V. testa obovata, turgida, fusccsceute, costis lamellosis reflexis 

 posticis magis eminentibus concentricis ornata, lineis radiautibus 

 iinpressis albis decussata ; impressione cordiformi antica distiiicta, 

 marginibus mediaiiis elevatiusculis, iiitus alba; margine ventrali 

 creuulato." 



Of a more depressed, oval form than others of the same group, 

 the concentric ridges rather obsolete in the centre, close and la- 

 minated at the posterior side, and close and undulated at the 

 anterior side of the shell. 



Valparaiso, Chili, and Callao, Peru ; in coarse sand, six to fifteen 

 fathoms. Cuming. 



5. Venus Listeri (pi. clii. f. 7, 8, 9), Gray (Dosina) in 

 Analyst, 1838. Eucyc. Meth. pi. 278. f. 2. 



V. testa ovali, subquadrata, ponderosa, sulcis numerosis planu- 

 latis radiantibus et costellis concentricis numerosis antice crenu- 

 latis reflexis crassis postice erecto-laminatis laqueatis decussata, 

 pallide fulva, fusco-variegata ; latere postico elougato, postice 

 truucato; margine dorsali recto, uniplicato; latere antico brevi; 

 lunula magna, sutura circumscripta. 



Of an oblong truncated form, with the hinge-line nearly straight 

 (not arched as in F. puerperd) ; the ridges in both directions are 

 more numerous, and the concentric ones more laminar, than in 

 V. purpurea. The latter character is however sometimes lost, 

 as in the large, probably aged, specimen represented by fig. 8. 

 The figure in the Encyclopaedia is very exact for the type. 



Philippines, Cuming. Australia. 



6. Venus Chemnitzii (pi. clii. f. 6), Hanky, Sp. of Shells, 

 App. Wood^s Suppl. pi. 16. f. 20. 



V. testa V. Listeri simili, sed costellis concentricis fenuibus 

 omnino laminatis acute laqueatis colore fusco angulatim varie- 

 gata. 



Resembling V. Listeri, excepting in the character of the con- 

 centric ridges, which are thin, laminated througliout, and fluted in 

 the same manner as in the hinder side of the shell in V. lacerata. 

 The brown colour is arranged in beautiful zigzag markings. 



Island of Ticao, Pliilippiues. Cuming. 



