Q44 PROCEEDINGS OF THE ACADEMY OF 
ON THE LINGUAL DENTITION AND GENITALIA OF PARTULA AND 
OTHER PULMONATA. 
BY W. G. BINNEY. 
I owe to the kindness of Dr. W. D. Hartman, of West Chester, 
Pennsylvania, the opportunity of examining numerous species of 
Partula. The specimens were received by him directly from Mr. 
Garrett. Their identification is that of the latter, and may be 
relied upon on account of his relations with Mr. Pease. Of their 
value as distinct species, however, I have nothing to say. So 
labelled were Partula fusca, Pease; P. citrina, Pease; P. plani- 
labrum, Pease; P. abbreviata, Pease; P. umbilicata, Pease; 
P. bilineata, Pease; P. amanda; P. virginea, Pease; P. gracilis. 
Each’ of these were represented by several specimens still 
remaining in their shells. Hach species was in a separate bottle, 
great care being taken to preserve their identity and pevent inter- 
mingling of species. 
In addition to the above nine so-called species, there was one 
large bottle containing many specimens of the following: Partula 
rosea, Brod.; P. formosa, Pease; P.? lugubris; P. varia, Brod.; 
P. compacta, Pease; P. Garretti, Pease; P. ? dentifera, Pease; 
P. crassilabris, Pease; P. Hebe, Pfir.; P. protea, Pease; P. 
globosa, Pease; P. approximata, Pease; P. turgida, Pease; P. 
faba, Martyn. As the species of the above lot were not separately 
indicated, the specimens are of value only as throwing light upon 
the generic characters of Pariula. Especially as proving the con- 
stancy of the peculiar dentition of the lingual membrane, they 
serve an excellent purpose. To this end I have examined the 
membrane of all of the specimens in the bottle. The result of the 
examination will be given below. 
The external characters of all the species agree. The animal 
is blunt before. The tail is long and gradually acuminated. 
There is no caudal mucus pore, no parallel furrows along the 
side of the foot, no distinct locomotive disk. The labial processes 
and the collar seem unusually developed. The anal and respira- 
tory orifices are situated as usual in the shell-bearing Geophila. 
The genital orifice is close behind and below the right eyepedun- 
cle. The tentacles are present in all the species, protruding in 
