1875. ] OF THE MADEIRAN ACHATIN#. 679 
of Lowe) fall off from it; for they certainly have not the characteris- 
tics of the genus. Does the Achatina folliculus, Gron., a common 
European species, belong to this new genus or not? Surely, had it 
possessed the generic peculiarities mentioned above, the fact would 
long ago have been noticed. I have not been able as yet to decide 
the question, and have, indeed, to regret that so few of the distinctive 
Madeiran species have been examined by me. It was but very shortly 
before leaving the island that I noticed the caudal gland in A. torna- 
tellina ; and for the other species here described, I have been indebted 
to the kindness of my friend Mr. Moniz, who, after considerable 
difficulty and delay, procured from Porto Santo the other species here 
described. 
Lovra (ACHATINA) MELAMPOIDES, Lowe. 
Colour. The general effect is light, of a faint ruddy brown tinge. 
The foot is gelatinous, translucent, white, with a faint tge of brown; 
that of the body is a slightly darker tinge of browu which extends 
along above the edge of the foot to the gland at the tail. The head 
and neck are slightly browner than the body, and are scored with the 
long grey muscles of the tentacles. 
The mantle is of the same colour as the body. The mantle-lobe, 
in my specimens, which had been long in confinement, was small and 
thin and transparent, but quite distinctly lapping out beyond the 
aperture and turned back upon the edge and prolonged posteriorly. 
Tentacles rather long, but not thin, seldom extended, terminating 
in small round’ bulbs, on the upper surface of which is an ocular lens 
shaped like a thumb-nail, in which the minute black eyes appear. 
The under tentacles are very short and not so dark as the upper ones ; 
they are seldom fully exserted*. Both the body and the tentacles 
are finely tubercled. 
Foot narrow. Tail very long, extending nearly or quite to the 
apex; very slender and sharp-pointed on the sole, but broad and 
obliquely truncate above, with a gland distinctly projecting into a sharp 
angulation a little short of the end of the tail. 
Jaw horny, crescentic, about ‘05 inch (17 mill.) long (taken 
straight, not along the curve), and ‘01 inch (or 3 mill.) wide. It is 
scored across with about 60 slightly converging ridges. 
The radula consists of overhanging, long-pointed, 2-shouldered 
teeth fixed on a square base. The centre tooth is very small and 
extremely short, with a minute sharp overhanging point and very 
slight shoulders. The base to which it is attached is not square, but 
oblong like a narrow crescentic shoemaker’s knife. On either side 
of this central tooth there are 50 lateral teeth ; but as they go off to 
either side they become rudimentary and appear at last as mere 
square ticks. The outer shoulder tends earliest to recede towards 
the root of the tooth and to become rudimentary. There were at 
least 100 rows ; but many of them had been lost. 
“* Thave noted that they seemed to haye minute eyes; but I could not quite 
satisfy myself of this. 
