48 Mr. R.J.L. Guppy on the Terrestrial and 
Succinua, Draparnaud. 
Succinea approzimans, Shuttleworth. 
This shell resembles S. propinqua, Drouet, which may possibly 
prove to be a variety. 
The animal is speckled and streaked with black. The lower 
pair of tentacles are small. It is found in moist places, but 
never in water. The lingual teeth are numerous, in straight 
rows, on subquadrate bases, edges reflexed ; central with one 
strong rounded point, and a malice one on each side; laterals 
bidentate, inner cusp largest, with an obsolete toothlet on its 
inner edge, 
Buuimus, Scopoli. 
Bulimus oblongus, Miller, sp. 
The peculiar conformation of the head of this mollusk was 
noticed by D’Orbigny, and figured by him*. On each side of 
the head is a flattened appendage, which is divided into eight 
short, obtuse tentacular processes, each about 75th of an inch 
in length. These probably aid in enabling the animal to burrow 
in the soil, and perhaps even in discriminating food, 
The sexes are separate ; the genital orifice is large and situate 
beneath the upper tentacle on the right side, near the junction 
of the above-described appendages with the body. The ¢ organ 
is about 2 inches long, club-shaped, furnished internally with a 
long stout cartilage. The lingual band is broad, and covered 
with numerous similar teeth in straight rows ; the cusps simple, 
rather obtuse. The dental membrane is folded over a strong 
cartilage. There are two mandibles, somewhat as in the Cepha- 
lopods, the upper one rather horseshoe-shaped, the lower one 
tongue-like and triangular, occupying the cavity of the throat. 
Bulimus zebra, Miiller. 
D’Orbigny, in the ‘Moll. de Cuba,’ makes B. wndatus a 
synonym of B. zebra, and gives the preference to the latter name 
on account of priority. I have followed him, though I am aware 
that many naturalists consider these to be distinct s species. Beck 
(Index) makes the West-Indian shell Orthalicus undatus, and 
the South-American one O. zebra; but having compared all the 
specimens and figures within my reach, I am unable to perceive 
any constant differences. These shells, as well as B. phlogerus, 
D’Orb., seem to me to belong to one species ; and B. regina, Fér., 
may possibly be a reversed variety of the same. 
‘The lingual band is very large, covered with numerous similar 
subquadrate teeth, in somewhat divergent rows. 
* Voy. Amer. Mérid. p. 297, pl. 37. f.1,2. There is a figure also in 
Mrs. Gray’s ‘ Figures of Mollusca.’ 
