1011 
— 
=) 
ee 
SIS 
bo bo bw bw bo 
Ot Hm GC Lo 
for) 
1029 
1030 
1031 
1032 
VARIETIES OF NASSA. 63 
Ribs numerous, granules dark brown, with a pale central 
band, callous thick, not spreading ; is an intermediate form 
between N. antillarum, Phil., and N. crassa, Koch., varix 
behind the lip very strong. 
Acuta, Say, passing into the N. vibex, Say. 
“e = N. antillarum, Phil. 
Tall and semicostate, passing into the N. jacksoniana, Quoy. 
and Gaim. “Voy. del’ Astr.,” pl. 32, f. 28-29 (not Kien. !) 
Similar in form and colour to the N. tegula, Reeve. 
Tiarula, Kien., pl. 30, f. 4. 
Coronula, A. Ad. P.Z.S., 1851, p. 96. Philippines, 
The N. tegula, Reeve, is a variety of the N. tiarula, Kien., 
and the N. coronula, A. Ad., is a strongly-ribbed variety 
of the same shell. 
Jacksoniana, @uoy and Gaim. “Voy de |’ Astr.,” pl. 32, 
f.285. 9. Port Jackson, Australia, 
Very dark, banded, covered with a dark epidermis. 
S. Archer, Singapore. 
White, banded with brown. 
Of a yellowish slate colour, banded with brown. 
Quoy and Gaim., Port Jackson. 
Closely allied to the N. corticata, A. Ad. 
Small, dark brown, strongly ribbed, ribs granular. 
oP) 
Tall, callous pale yellow. 
Callous surrounded by a rufous ring. 
Narrow and elongated, ribs granular, passing into the fol- 
lowing shell. 8S. Archer, Kauson Creek, Brit. Honduras. 
Fida, Reeve, pl. 13, f. 88. 
Vibex, Say. Jour. Acad. Nat. Sci, 11, 231. Invert. Mas- 
sach., p. 364, f. 628 (not Reeve !) 
“ Broad, with a dark band at the top, on the middle, 
and at the front of the body-whorl.”-- Gould. 
Fratensis, Perkins. Newhaven. 
The varieties of N. Jacksoniana, with sharp ribs, pass into 
the N. acuticostata, Montrouz, and the broad forms of it 
show a close affinity with the small varieties of N. stolida, 
Gmel. 
Thersites, Brug. Ency. Meth., pl. 394, f. 8. Reeve, pl. 10, 
f. 65. 
Very dark brown, with a pale band, a large variety. 
