140 



subcarinated peripliery: aperture rather broadly ovate: 

 columella arcuate and flattened. The sculpture is like 

 that of L. carinata Orb., and the form is like that of 

 L. lineata d'Orb. (ziczac Dh.), but ii rather more ro- 

 bust, and the shell is more sohd. 



A variety of colouring has all the shell black except 

 on the Upper third of the whorls and on the anterior 

 part. 



Long, spirae 0,35 poU. ; long. tot. 0,^^ poll., lat. 

 0,44 poll." 



Littorina jamaicensis C. B. Ad. Contr. 1850 p. 71. 

 Hab. Jamaica (Ad.) 



327. Littorina Riisei Mörch. 



T. late ovata, spira brevis, alba fascia mediana et 

 angusta infra-carinali cinereis; lineis rufis obliquis un- 

 dulatis; dimid. post. anfr. liris spiralibus planis remotis, 

 lineis subtilissimis in interstitiis , ad suturam latiores, 

 interdum lirula intercalante; dimid. ant. conferte spira- 

 liter sulcata; carina prominente; columella carnea fusco- 

 marginata; faucibus castaneis. 



Long. 12 mm.; diam. 8 mm. 



Littorina jamaicensis" var? of sculpture and color- 

 ing has the stria3 enlarged nearly to the width of the inter- 

 vening ridges, and is mostly black with spirally elongated 

 Spots of white on the ridges." 



Adams Contrib. 1850. p. 71. 

 Hab. Havanna (Liebm.) Cuba (Rasmussen ; Riise.) 



Littorina lineata d'Orb. Cuba. t. 14. f. 25. quoad 

 formam, sed sculptura diversa. 



* 328. Littorina pusilla Phil. 



„T. apice erosa et decollata, alba lineis obliquis 

 nigris. 



Littorina pusilla Phil. Abbild, t. 3. f. 23. 

 Hab. Brasiha vel J. SandAA'ich (Largilliert.) 



329. Littorina sp. n. an var. pr^ecedentis. 



T. minuta, Candida lineis remotis piceis obliquis 



