60 MOLLUSCA. ’ 
Found by Mr. Couthouy, at Tutuila and EKimeo, on the wild Fehi. 
The animal is darker than that of variety c. 
By comparison of numerous specimens, these shells, which differ 
so much in extreme varieties, have been reduced to one species. 
Varieties a and d are undoubtedly the same species, and pretty cer- 
tainly variety c: but variety d may well be regarded as distinct, both 
on account of its characters and its habitat, and still more so may 
variety e. All of them, however, have the peculiar boxwood fabric, 
and all of them are uniformly banded at the apex. 
Figure 55, the animal, with the shell of variety e; 55 a, top of the 
shell of the same variety ; 55, top of the shell of variety b; 55c, late- 
ral view of the shell of variety «a. 
Hexix Evrypice (Gould). 
Testa tenuis, depresso-pyramidata, acutissime carinata, palhdé virens, 
linea castaned volvente supra et infra picta, subtus planulata, umbilico 
lato et profundo perforata: spira anfractibus quinque ad sex viz con- 
vexis, apice rotundato : apertura transversa, acute triangularts ; labro 
acuto. 
Heliz Eurydice, Goutp; Proceed. Boston Soc. Nat. Hist., 11. 177. 
Nov. 1846. Expedition Shells, 24. Prerrrer ; Monog. Helic., 1.119. 
Suet thin, depressed, pyramidal, very sharply carinate, very deli- 
cately striated, of a pale emerald green colour, having a single chest- 
nut line revolving on the middle of the whorls above, and a broader 
one, near the margin, beneath. Whorls five or six, scarcely convex, 
or distinguished by the suture, forming a low conical spire, obtuse at 
the summit. Beneath rather paler, nearly flat, rounding off into a 
deep umbilicus. Aperture acutely triangular, transverse, coloured 
like the exterior. 
Diameter thirteen-twentieths of an inch; axis eleven-fortieths of 
an inch. 
Inhabits Tongataboo. 
