GASTEROPODA. 99 
Hericina Laciniosa (Mighels ). 
Testa parva, conico-globosa, solidula, cinnamomea lineis flexuosis luteis 
variegata: spira anfractibus quinis subplanulatis, ultimo angulato eb 
stris elevatis duobus ad tribus cincto: apertura lunata; labro acuto, 
ad columellam expanso ; operculo tenut, fulvo. 
Helicina laciniosa, Micuets ; Proceed. Boston Soc. Nat. Hist., ii. 19. 
Jan. 1845. 
SHELL conic-globose, rather solid, of a cinnamon-brown colour, 
variegated with yellowish zigzag stripes. Spire composed of five 
flattened whorls, the last of which is obtusely angular at periphery, 
and has two or three raised revolving lines upon it. The aperture is 
lunate, the lip acute, expanding in the vicinity of the columella. 
Operculum thin, yellowish-brown. 
Axis one-tenth of an inch; base three-twentieths of an inch. 
Found at Kauai, Sandwich Islands. Couthowy. Waianai, Pickering. 
Resembles the two preceding ; but is distinguished from H. fulgora 
by being smaller and more globular, and from H. musiva, by the raised 
revolving lines, and by having zigzag markings both on the base and 
on the spire. 
Figures 108, 108 a, 1084, three views of the shell, magnified three 
diameters; 108, natural size. 
HELICINA TROCHLEA (Gould). 
Testa minuta, trochiformis, supra cinerea, costis acutis volventibus tribus 
vel quatuor (intervallis concavis, scabrosis) cincta, infra convexa, 
polita, citrina: spira anfractibus quatuor, ultimo ad peripheriam 
bicarinato : apertura sub-trigona ; peristomate leviter reflexo ; colu- 
mella ad basim angulata, callo copioso induta. 
