VARIETIES OF NASSA. 
One of the Australian varieties; has been named N. Jack- 
soniana, Kien., pl. 19, f. 73. 
3 Lined on the back of the lip, and otherwise very like varieties 
of N. picta, D’k’r. 
A variety very closely approaching some of the shells of 
N. coronata, Brug. 
Approaching forms of N. nodifera, Powis. 
Closely allied to the N. mucronata, A. Ad. Shark’s Bay. 
Resembling in form and ribbing the N. costata, A. Ad. 
Shell narrow, passing into the N. velata, Gould. Australia. 
Nodifera, Powis. Reeve, pl. 4, f. 23. Panama. 
Taller and more deeply canaliculate; colour pale purplish- 
brown and buff. New Guinea. 
A large variety is figured in Gault. Test., at pl. 44, f. D. 
Reddish-brown, as if iron-stained, - callous expanded and 
thickened, closely resembling varieties of N. hirta, Kien. 
Ash-grey, ribs close, sutures distinctly coronated, sulci between 
the ribs distant, callous almost obsolete. 
Shell elongately ovate, callous defined, columella strongly 
plicate, on the front of the shell, the ribs are close and 
numerous. 
Short, broad and rounded, banded with brown and white. 
Ash-grey, strongly ribbed, carinated at the base, the inside is 
deep purple, New Guinea. 
Resembling N. gemmulata, Lam., in form, ribs gracefully 
curved ; the lower part of the body-whorl is closely granular. 
This shell combines the characters of the N. gemmulata, 
Lam., N. marginulata, Lam., N. nodifera, Powis, and 
N. costata, A. Ad. 
With the upper whorls cancellated and the body-whorl strongly 
ribbed. 
Shell passing into varieties of N. sequijorensis, A. Ad. 
Ribs strong on each side of the shell, smooth in the centre, 
closely resembling a similar variety mentioned under the 
head of N. tenia, Gmel. 
> Shell coronated, ribbed in front, smooth at the back. 
Ribs broad, shell cancellariform. 
Elongated, strongly ribbed and coronated. S. Archer, Singapore. 
Pale buff, almost white, with two broad pale ash bands, ribbed 
and coronated, 
