VARIETIES ‘OF NASSA. 
Intermediate between the N. celata, A. Ad., and small 
varieties of N. marginulata, Lam. 
A small, dumpy form, passing into the N. globosa, Quoy and 
Gaim. 
Lactea, Marr. (See description), is thin, white, with a turreted 
spire, evidently one of the deep water shells. 
Narrow varieties pass into the N. livescens, Phil., small forms. 
Passing into the N. Australis, A. Ad. 
Smaller, thicker, and more turreted, passing into the N. rugosa, 
Marr. 
Spilus, Watson. (Shells of the “Challenger” Ex). 155 fath. 
A thin, hyaline shell. Rain Island, Torris Straits. 
Crenellifera, A. Ad. P.Z.S., 1851, p. 99. Reeve, pl. 8, f. 49. 
Sprela, Watson. (Shells of the “Challenger” Ex.) 12-20 fath. 
Amboyna. 
A small, cancellated, greyish-white shell. N. pusilla, Marr. (See 
description). Surgeon-Major 8. Archer, Singapore. 
Shell about a quarter of an inch long, between the small 
varieties of N. cremata, Hinds, and N. abyssicola, A. Ad. 
Abyssicola, A. Ad. P.Z.S., 1851, p. 100. Reeve, pl. 26, 
Lelio. Philippines. 
Granulosa, Marr. (See description.) A beauty. Taylor 
Collection. Philippines. 
Like the N. cremata, Hinds, but having the longitudinal lines 
very fine and raised. 
Sequijorensis, A. Ad., the cancellated form. Reeve, pl. 8, f. 53. 
Philippines. 
Closely ribbed, with a few grooves between the ribs. 
Very closely ribbed and cross-grooved, 
Dark rufous-brown, whorls rounded. 
Of a cream colour, with three pale rufous bands, sutures deeply 
channeled, passing into the variety N. trifasciata, A. Ad, 
Similar to the last, but having the suture almost closed. 
Resembling the two last, but very elongated. 
With smooth ribs. 
Broader, passing into the N. nodifera, Powis. 
Nivosa, Marr. Pamphlet, p. 9. White, cancellated, coronated 
at the sutures. 
Transversely spirally grooved; is the N. insculpta, Carptr. 
40 fath. California. 
