VARIETIES OF NASSA, 41 
Interstices grooved, with two internal white bands on a brown 
ground. <A beauty. 
An elongated, strongly cancellated shell, resembling N. marginu- 
lata, Lam., passing into N. scalaris, A. Ad. 
Smaller, ribs wider apart, scarcely cancellated, callous spreading. 
Margaritifera, Reeve, pl. 9, f. 59, (not Dkr. !) 
With the lip prickly in front with denticles. 
A variety with the cancellation very fine, the transverse and 
longitudinal lines being hair-like, callous none. 
Shell small, ribs distant, banded with brown and white. 
Ceylon. 
Somewhat humpbacked, cancellated, callous covering the whole 
front of the shell. It came with the N. thersites, Brug., and 
is a cancellated variety of it. Itisalso the N. marginulata, 
Kien; pk 29, f° 117%, 
} Has sniooth ribs, and resembles in form and colour the N. nivea, 
A. Ad. 
Somewhat elongated, smaller than the last, ribs broad, resem- 
bling the N. Fontanei, D’Orb. 
Ovate in form, approaching the N. oblonga, Marr. 
Oblonga, Marr. Pamphlet, p. 5. 
472 Shell fusiform. 
Australis, A. Ad: P. Z.S., 1851, p. 272. Australia. 
Intermediate between the last and N. livescens, Phil. 
S. Archer, Singapore. 
Narrow, with the longitudinal and transverse lines very fine. 
Livescens, Phil. Zeit. f. Malak, 1848, p. 135. Philippines. 
Ribs broad, wide apart. 
Hepatica, Pult. Wood’s Index, pl. 22, f. 42. 
Intermediate between N. livescens, Phil., and N. margaritifera. 
Reeve. 
) Shell deformed, having a thick piece of shelly matter cemented 
to the inner edge of the lip. 
Between N, marginulata, Lam., and N. Australis, A. Ad. 
Ribs wide apart, beaded at the sutures, smaller and broader 
than any of the foregoing varieties. 
Shell smaller than the last, passing into the N. celata, A. Ad. 
S, Archer, Singapore. 
