c 
Dentition of Pulmonate Mollusks. 12 
Jaw with 15 plates (Pl. XV, fig. N). 
Lingual membrane (Pl XII, fig. C) 15 mm. broad, 16 mm. long, The 
rows of teeth are arranged in a backward curve from the median line for a 
short distance, and then run obliquely to the outer margin of the membrane; 
marginals as usual in the genus, but the central tooth differs in having a 
long, stout, lance-like cutting point, bearing at the middle of each slde a 
prominent, subobsolete, blunt spur; three laterals on either side like the 
central, but asymmetrical, with the spur only on their outer sides ; teeth in. 
one row 108-1-108. 
For jaw and lingual membrane, see Terr. Moll., V. 
Liguus virgineus. Linn. Aux Cayes, Haiti. R. Swift. 
Lingual membrane (Pl. XII, fig. A). 
The marginal teeth are as usual in the genus, but centrals and laterals 
differ; membrane 44 x 18 mm.; teeth 40-1-40; the centrals and two first 
laterals have a short, stout, pointed cutting point, of the same type as des- 
eribed in Orthalicus gallina-sullana. 
This completes the list of terrestrial Pulmonata* examined by 
me; the following have also been described from other orders, 
generally with a figure. 
PULMONATA LIMNOPHILA. 
Melampus bidentatus. Say. Ann. Lyc. N. H. of N. Y., IX, 286. 
Alexia myosotis, Dr. L. & Fr. W. Sh. N. A., II, 1. 
Carychium eviquum, SAY. “ = , 6. 
Limnoeea appressa, Say. Am. Journ. Conch., VII, 161; L. & Fr. W. Sh., II, 28. 
SH OGS, JL, Ib, we Jp, WY, Sla,, JUL, ian, 
meqasoma,SAy. Am. Journ. Conch., VII, 162. 
columella, SAY. Ji. & Kr. W. Sh. N. A., Il, 24. 
catascopium, SAY. ‘* f oS Os 
Or 
Ponpholyx effusa, Lea. Am. Journ. Conch., VI, 312. 
* Excepting Buliminus Natalensis, unfortunately omitted. (See Ann. 
IN, Mo GAG Gil, Ik COM, JEL DOW, mle, dla 
