700 



7. Venus multicostata (pi. clii. f. 10), Sowed//, Pro. Zool. 

 Soc. 1835, p. 22. 



V. " testa elliptica, ventricosa, crassa, concentrice multicostata ; 

 costis reflexis, crassis, antice undulatis, medio crenatis, postice 

 alternatim interruptis, subirregularibus, subundulatis ; margine 

 dorsali rectiusculo, ventrali rotundato; impressione cordiformi 

 antice distincta." 



Of the same form as V. Listen, but with ribs very thick and 

 reflected at the anterior, undulated, in the middle crenulated, and 

 at the posterior rather irregular, alternately interrupted, and very 

 slightly undulated. 



Panama Bay ; in coarse sand at low water. Cuming. 



8. Venus uesticulata (pi. cliii. f. 23), Soiverhy , jnn. 



V. testa ponderosa, ventricosa, rotundata, alba, prope umbones 

 subradiatim maculata, sulcis radiautibus et costis concentricis no- 

 duliferis validis postice sublaminatis numerosis decussata; mar- 

 gine dorsali subarcuato, plicato; lunula magna, laminata; mar- 

 gine ventrali crenulato. 



This shell is much rounder in form than V. multicostata, and 

 the ribs are more universally crenulated. Both the species differ 

 from V. puerpera in the thickness and closeness of the ribs. 



East Indian Islands. 



9. Venus laqueata (pi. cliii. f. 15), Sowerby,jun. 



V. testa ovali-subquadrata, ventricosa, costellis radiantibus 

 duplicatis et costellis concentricis distantibus erectis laminatis 

 latis acute laqueatis decussata, alba, seu pallide fulva, obscure 

 triradiata; margine dorsali rectiusculo, valvse dextee laminato, 

 alteram superante, valvse sinistras subplanulato ; lunula magna, 

 laminata ; sutura circumscripta. 



Oblong, rather truncated and very ventricose, with the concen- 

 tric ribs deep, laminated and beautifidly scalloped. Those of V. 

 ChemnUzii present a very miniature likeness of them. 



Swan River, Australia. Juices. 



10. Venus reticulata (pi. cliii. f. 11, 12, 13), Linn., Mus. 

 Ulr. p. 503. V. corbis, Lamarck, Anim. sans vert. sp. 4. 

 Chemn. f. 382, 383. 



V. testa oblique ovali-suboblonga, alba vel fulva, fusco vel rubro 

 variegata, costellis radiantibus rotundatis et costellis concentricis 



