224 < Dr. Marox's and Mr. RAckzTT's 
_gibbo, bifido. . Linn. Syst. Nat. p.1251. n. 715. Linn. 
Gmel. p. 3669. j EAG 
Bonanni Recr. t. 224. 228. 
Gualt. Test. t. 67. f. Q. R. S. V. X. 
Murray in Aman. Acad. t. 1. f. 23. 
Chemn. Conch. f. 1860— 1865. 1868—1871. 1881—1886. 
` Donovan Brit. Shells, t. 167. N. intricata. 
Halitat in marti. 
Testa alba, picta lineis spiralibus interruptis apa, seu maculis 
spiraliter digestis, lævis, magnitudine avellanz. Spira parum eminens, 
acuta. Apertura hians, edentula. Umbilicus profundus, arcuatus ver- 
sus posteriora. (Linn. Mus. Lud. Ulr. n. 383.) 
Mr. Donovan's figure, from a shell found at Wey- 
mouth, appears to represent one of the varieties of this 
species, which are very numerous. 
g | 
glaucina. N. testa umbilicata, levi, spira obtusiuscula, umbilico 
semiclauso ; labio -gibbo dicolore. Linn, Fauna Suec. 
1.2197. Syst. Nat. n.716. p. 1251. Linn. Gmel. p.3671. 
Lister Anim. Angl. t. = Jf. 10. o Cong i e 568. f. 19. 
Petiver Gaz. t. 93. f. d. ; 
Rumph. Mus. t. 22. f. A. 
Seb. Mus. 3. t. 39. f. 16. 
Gualt. Test. t, 67. f. M. P. 
Knorr Vergn. 2. t. 11. f. L; g 6.1. ORANA 
Pennant Brit. Zool. t. 87. f. 141. 
Da Costa Brit. Conch. p. 83. t. 5. f. T. Cochlea Catena. 
Pulteney i in Hutch. Dorset. p. 50. t. 21. ^ T- 
: an Brit. Shells, t. 20. f- 1. Qu 
Montagu Test. Brit. P 469. : 
Habitatin pelago. —— — | 
Testa diametro 14 poll., levis, apes. convexa, nunc livida vel purpuras- 
cens, nunc alba vel cinereo-ceerulescens, obumbrata seepius lituris cæ- 
a 
