189 Jaw and Lingual Dentition of Pulmonata. 
shown the genus to be widely distinct from Swcctnea, in its 
jaw, its lingual membrane, and its genital system. 
Succinea campestris, Say. 
St. Augustine, Fla. 
Genitalia as in §. obliqua, Say, figured under the name of 8. ovagis, by 
Leidy, Terr. Moll. U. S., I. pl.. xiii. fig. 1-3. 
Succinea pallida, Pfr. 
Raiatea Isl Mr. A. Garrett. 
Lingual membrane (pl. xvii, fig. 7) with 380-1-30 teeth, with about 
eleven laterals, but the change into marginals is very gradual. The figure 
shows a central, first lateral and a marginal in the fifteenth tooth. 
Jaw as usual in the genus: no anterior ribs. 
Succinea papillata, Pfr. 
Huahine Isl. Mr. A. Garrett. 
« Jaw as usual: no anterior ribs. 
Lingual membrane (pl xvii, fig. 6) with 25-1-25 teeth; nine laterals, 
the tenth tooth having its inner cutting point bifid. Some of the outer 
laterals have their outer cutting point bitid. 
Tornatellina aperta, Pease. 
Huahine Isl. Mr. A. Garrett. 
Among the species received from Mr. Garrett were two 
of this genus, 7. aperta, Pse. and 7. oblonga, Pse. I did 
not succeed in extracting the jaw of either. With the 
lingual membrane I was more fortunate, which is the more 
satisfactory from the fact of the dentition being quite similar 
to that which Mr. Bland and myself have described for 
Achatinella, s. s., Partulina, ete., sub-genera of Achatinella 
(Ann. Lye. N. H. of N. Y., X. 331). From the exceeding 
minuteness of the individual teeth I find great difficulty in 
counting the cutting points. They seem to be about eight, 
in the form of regular denticles, not of unequal size as in 
Achatinella. 
