20 CONCHOLOGIA CESTRICA- 
Station, among rotten wood, under loose bark, etc. 
Chester County; common. 
Lingual Dentition of T. Carolinensis.—[B. & B.] 
Fig. 3, 
VN) nae 0 
"0 

Sub-genus PALLIFERA, Morse, 1864. 
Animal, in external characters, resembling Teben- 
nophorus; but differing in the form of the buccal plate, 
and dentition, of the lingual membrane. 
P. dorsalis, BINN. 
a Philomycus dorsalis, Binn., Proc. 
Pallifera dorsalis. - 
(Boe Es Bost. Soct. Nat. Hist., 1841. 
Fig, 4 
Cylindrical, attenuate, acute posteri- 
orly, above obscurely elongate-rugose ; 
ashy blue, with a black dorsal line; tentacles blackish ; 
lingual membrane with 115 
Jaw of P. dorsalis. —{Morse. | rows. of I fe) teeth. each: Foie 
Fig. 5 ’ ’ $7 3 

56; buccal plate arcuate, with 
costae strongly denticulating 
the concave margin; length 34 

of an inch. 
