430 Binney's Monograph of the Helices 
The foot of the animal is smaller, and the tenta- 
cula shorter, than in either of the other species pos- 
. sessing so large a shell ; it is also flatter and. thinner, 
^ "The collar is deeply tinged with the coloring matter 
which ornaments the shell, and which is sometimes. 
secreted in such profusion, as to give a saffron tinge 
to the trace which it leaves on objects over which it 
crawls. It is distributed over the animal, and ar» 
ranged'in minute points, which are most thickly 
clustered on the anand and on the sino tuber- 
cles of the surface. 
The shell varies in "ei more. or n desee 
and having the strie more or less rough. In the 
young shell the margin is carinated, especially at its 
ction with the second whorl. On many indis 
viduals there is a distinct, uncolored- line on the 
centre of the outer whorl, dividing the rufous bands 
of the superior surface from one on the lower surface. - 
This species was described by Mr. Say, in 1818, 
as HeLix alterndta, In 1822, Lamarck gave it the © 
specific name of scdbra, a name pre-occupied by & 
species of Chemnitz. Say’s. name has the priority 
and is adopted in this country, as it should be else- 
where. viet $71 
E 
^44. HELIX PERSPECTIVA. - 
Plate XXI. fig. 4. 
a... 
H. testà parvà, orbieulato-depressi, sub-discoided, lat vind 
rufescente ; anfractibus convexiusculis, seabris, stris - , 
elevatis, distinctis; aperturà sub-rótundatà, depressá ; 
` acuto. 
