GASTEROPODA. 297 
Distribution, 20 species. Europe. Norway, Britain, Spain, 
South Africa. 
Fossil. Newer Pliocene, Maidstone. (Morris.) 
Plectrophorus (corninus, Bosc) Fér. 5 species. Teneriffe ; 
represented as haying a small conical shell on the tail ; probably 
an erroneous observation. 
PARMACELLA, Cuvier. 
Type, P. Olivieri, Cuvier. 
Etymology, parma, a small shield. 
Synonym ? Peltella (Americana), Van Beneden. 
Shell concealed, oblong, nearly flat, apex sub-spiral. 
Animal yitrina-like, with an ample foot, pointed behind, and 
furnished with a mucus-pore; mantle small, shield-like in the 
middle of the back, partly or entirely concealing the shell. 
P. calyculata, Sby. (Cryptella, Webb), Pl. XII., Fig. 27, is 
patelliform, with an exposed papillary spire. 
Distribution, 7 species. South Europe, Canary Islands, North 
India. 
JANELLA, Gray, 1850 (not Grat. 1826). 
Synonym, Athoracophorus (!), Gould. 
Type, Limax bitentaculatus, Quoy. Elongate, limaciform, 
coyered bya mantle with free margins ; back grooved ; tentacles 
2, retractile, rising within the edge of the mantle; respiratory 
orifice to the right of the dorsal groove, reproductive orifice 
below it and beneath the mantle. 
Distribution, New Zealand, on leaves. 
ANEITEA, Gray, 1860. 
Mantle small and triangular, tooth strap with a single median 
tooth. 
Distribution, 1 species. A. Macdonaidii. New Hebrides, New 
Caledonia. 
PARMARION, Fischer. 1855. 
Shell shallow, partly external; mantle large, with a free 
margin anteriorly, but covered by the shell posteriorly ; genera- 
tive orifice behind the right tentacle. 
Distribution, 4 species. India. 
TRIBONIOPHORUS, Humbert, 1863. 
Mantle small, triangular, back with an almost imperceptible 
furrow ; teeth with wavy edges. 
Distribution, 3 species. New South Wales, 
O38 
