104 



LAND AXI) FllESII-WATER SHELLS OF N. A. [PART III. 



T/uodoxns reclicattis, Say, Jouru. A. N. Sc. Pliila. II, 257 ; Bi>'NEy's ed. 87. 



Ncrltina reclicuta, Reeve, Con. Icon. 34 a, h, Oct. 1S5&. 



Neritina Jloridana, Shdttlewoktu in Reeve, Con. Icon. 85 a'i Nov. 1855. 



Fig. 207 represents the lingual dentition of this species, from a 



Fig. 207. 



Liagaal dentition of Neritella reclivata. 



specimen presented the Smithsonian Institution hy Prof. Agassiz. 

 The lingual })late is composed of 48 rows ; median tooth small, 

 slightly tridentate ; first lateral large, trapeziform ; second and 

 third lateral minute, simple ; uncini 18 or 19, first large, marked 

 with one large denticle, flanked by ten minute denticles ; the I'est 

 close set, long, slender, recurved, and blunt at ends. 



Reeve quotes it from Mexico. 



I have seen no authentic specimen of Neritina Jloridana, 

 Shuttl., placing it in the synonymy after a study of Reeve's de- 

 scription and figure, which are copied below. 



Neritwa Jloridana. — Shell compressly-globose, rather solid, spire obtuse, 

 whirls rather flattened at the upper part, columellar area callous ; greenish- 

 white, densely elegantly painted with very fine olive 

 Fig. 208. li^e^ 



Neritina Jloridana, Shuttleworth MS. in Museum 

 Cuming. 



Florida. Closely allied to Neritina reclivata, from 

 which it scarcely differs, except in being of a more 

 NerUina jloridana. stunted growth. {Reeve.) 



IVeritella califoriiica, Reeve. — Shell ovate, rather thin, concave 

 beneath, spire ratlier narrowly produced, obtusely flattened at the apex, 

 whirls smooth, aperture expanded, columellar area concavely flattened. 



