Jaw and Lingual Dentition of Pulmonata. 192 
Considering the intimate acquaintance of my friend, Mr. 
Gulick, with the genus, and his publication of a classification 
of the Achatellinew (Proc. Zool. Soc., 1873), it seems to me 
very desirable that his views should be compared with those ~ 
of v. Martens, with especial reference to the results obtained 
from examination of the dentition. 
In the foregoing paper by Binney, he expresses doubt as 
to the validity of our group c, and for my present purposes 
I therefore adopt two groups only, @ and 6, as indicated by 
the dentition of the species. 
Gulick’s classification is as follows :— 
ACHATELLIN A. 
A. Arboreal Genera. 
1. Achatinella, Swainson. 
Type A. vulpina, Fér. 
This is equivalent to the s. g. Achatinella s. str. of v. Martens. 
2. Bulimella, Pfeiffer. 
Type B. rosea, Sw. . 
This agrees with the s. g. Bulimella of v. Martens. 
3. Apex, v. Martens. 
Type A. decora, Fér. 
This also agrees with the s. g. Apex, v. Mart. 
4. Laminella, Pfeiffer. 
Type L. gravida, Fér. 
Laminella, Gulick, includes section 6 of Newcombia, v. Mart., but 
otherwise agrees with Laminella of that author. 
5. Partulina, Pfeiffer. 
Type P. virgulata, Mighels. 
Gulick embraces in this s. gen. two sections, Perdicella and Hbur- 
nella, proposed by Pease, the type of the former placed in Lepé- 
achatina by v. Martens, of the latter in Partulina. 
Partulina, Gulick, otherwise agrees with the same s. gen. of v. 
Martens. i 
6. Newcombia, Pfeiffer. 
Type N. Cumingi, Newc. 
Gulick, in a measure, agreeing with Pfeiffer, confines this s. gen. to 
the plicated species of section a. Newcombia, v. Mart. A. picta 
of that section is in Laminella, Gulick. 
7. Auriculella, Pfeiffer. 
Type A. auricula, Fér. 
Gulick and Pfeiffer correctly treat A. auricula. That and other 
Species of the s. gen. (Bland & Binney, |. c.) have the same denti- 
