52 



lines, which being decussated by the Hnes of growth, give the 

 shell the appearance of being divided into square compartments. 



3, Chilina tenuis, Gray. M. S, Brit. Mus. Testa ovata, tenui, 



apice acuminata, anfractibus quinque, subinflatis, ultimo majori ; 

 apertura magna, oblonga, longitudine spirani multo superante ; 

 labio columellari angusto, antice subcanalifero ; long. 0-85, 

 lat. 0-42 poll. Conch. Illustr. f. 12. Hab: ad Valparaiso et 

 ad Concepgao. 



4. Chilina fluctuosa, Gray. Testa ovata, spira conica, apertura 



duplo breviore, anfractibus quinque ad sex subconvexis, 

 columella alba, dente mediucri ; long. 1* lat. 0*5. poll, 



Chilina fluctuosa, Gray Spicilegia. Zool. p. 5. tab VI. f. 19. 

 Obs. This species varies much in its colouring, as indeed do most of 

 the species of GroT/'a subgenus, Chilina. Most of the specimens 

 show a slight trace of a tooth placed on the volution a little 

 posterior to the columellar fold, which characterizes the sub- 

 genus or genus. 

 5 Chilina fluviatilis. Gray. Testa ovata, spira conica, apertura 

 triplo breviore : anfractibus quatuor, convexis; labio columellari 

 lato, dente mediocri, apertura magna : long. 0*62, lat. 0*4, 

 poll. Conch. Ilustr. f. 5. Chilina fluviatilis, Gray, MS. 

 in Mus. Brit. 



Hab. in fluviis ChilieB. 



6. Chilina fluminea. Testa ovali, spira brevi, obtusiu?cula ; anfracti- 



bus quatuor, postice rotundato-subangulatis ; apertura magna, 

 labio coluQiellari antic^ planulato, postice plicis duabus validis : 

 long. 0-55, lat. 0-32, poll. Conch. IHustr. f. 7. 



Syn. Chilina fluminea. Gray, Spicil. Zool. p. 5. 



Voluta fluminea, Maton in Trans, of Lin. Soc. vol. x. 



Hab. in fluminis Brazilise ; (Rio Janeiro and Buenos Ayres.) 



7. Chilina major. Testa ovali, spna breviuscula, obtusa, anfracti- 



bus quinque ad sex subinflatis, postice rotundato-subangulatis; 

 apertuia magna, plica columellari mediocri : long. 1-4, lat. 85, 



