82 Dentition of Pulmonate Mollusks. 
(landing solidula, Pfr. (Oleacina.) New Providence. 
Lingual membrane as usual in the genus. 
Glandina Albersi, Pfr. ower California. 
In L. and Fr. W. Sh. of N. A., I, 19, is a figure of the dentition of this 
species, drawn by Mr. E. S. Morse. There are 32-1-32 teeth. 
Gonospira. 
Mauritius. Consul Pike. 
There are no laterals. The central tooth has a short, blunt, rounded cut- 
ting-point. ‘The marginals increase at first very rapidly in size. 
G. palanga, Ker. ‘Deeth, 37-1-37. (Pl. XVII, fig. F.) Ay pivos 
tograph of this membrane will be found in Am. Journ. Conch., 
Wy Bide 
Cie NOOO, tal, ANCL, “Aeetiln, GaleG, (Pi, AOWIUL, inter, Gi.)} 
G. Mawritiana, Morel. ‘Veeth, 12-1-12. (Pl. X VIL tie. ay) 
G. modiolus, Kér. Teeth, 25 1-25. | 
Cis MNCCOC, Wel, ANGI, “Ween, ZileileAil, (CR, AOWIOL, sie, IL.) 
G. sulcata, Mill. Lingual membrane as in the other species 
examined, 
Ennea, 
a 
Hnnea clavatula, lam. Mauritius. Pl. XVII, fic. J. Consilg 
Pike. 
Lingual membrane as in Gonospira. 
§piraxis. 
Spiraxis Dunkert, Pfr. San Domingo. Mr. J. 8. Gibbons. 
The membrane (pl. XVII, fig. K) has no central or lateral teeth. Those 
present are all marginals, of the form common in Glandina, and arranged en 
chevron. ‘The figure gives three on each side of the centre of the membrane. 
Rhytida. 
Rhytida vernicosa, Krauss. Cape Town, South Africa. 
This genus also, has no central or lateral teeth. The marginals are 
arranged as in Glandina. Pl. XVII, fig. L, gives the whole of one half of 
one transverse row of teeth. The formula is 14-0-14. The rows of teeth 
are close together, not separated. 
The species cannot be retained in Pella, a sub-genus of Hela, 
where Von Martens placed it. 
