*n SCAI.AKIA. 



.li A< IK- \. Morch. 1>">7. 



Juoy, IM. n;. ti- n. 



Rather thick, fulvous, with a white hand, or whitish, very min- 

 utely nodose, with vestiires of ribs, irathered and crcnulated at the 

 \\horl> about !>, a little sloping. Length. 1-1 "2~> in. 



Swan Hi I- 1 r. A a. ^ i'n /in. 



olonlj allied I.. \. rndiiftitii, Mijrhcls and Adams, and may 

 be a variety ; it ha> about the same nearness to that species that \ 

 Auttrale has to 8. bore-fifi*. 



S. dotm i \ iv. Miirh.-l> and Adams. PL 16, figs. 10, 12, 18. 



\Vhiti>h or .irn-yi.-h fulvous, thick : whorls 8, slopingly, sli.irhtly 

 -. ith a >j>iral rih helow, upper portion more or less distinctly 

 lii L 'itudinally rihhcd, gradually fading until the body whorl is- 

 .-mooth or nearly so. Length, lS-2'2 mill. 



Greenland to Cape Cod, J/'/-. 



MiL r hcN docriU-s a youn^r s|X'cimen, in which the rihs are more 

 apparent. The synonymy includes S. borealis, Beck, 1839, prol>a- 

 l.ly . not described), \ I'^rhrirhti ( Holh. ), Moller (fig. 12), Turritetta 

 I HI- . \\'aller. and N. tuitlii/titn, 8owb. (fig. 18). 



- m \T \. ( 'aniraine. PI. 16, fig. 19. 



\Vhorl> about 11, rather flattened, the upper .ones with longitu- 

 dinal ribs, which soon become obsolete, distantly, lightly, spirally 

 -triated. a -liirht >|iral rib on the base of the body whorl. 

 ih. I'.", mill. 



MI ili'f' man "n. 



Like S. eostu/'ifit, but narrower. The synonyms are S. Phifijtju'i, 

 .Hid j.robably N. .ti-i,it,i, A. Ad.. sail to come from the 

 Philippines. 



N- ELM, Yen-ill. IM. Ki, fi.r. 20. 



\Vhorl- about i, \\rll roiiudcil, with deep sutures, and rather 

 proiniueiit, clo>r. rounded ribs, tadim: out on the middle of the body 

 \\horl. L- mill. 



Martini'* }'/n< i/'ir<l. 

 I'robably not adult. 



i:i:lli UB, NVal^.n . IM. 1*. fi-. 7-"). 



II thin. -lopin L r|y -houlil.-n-d, white; whorls about S. rajidly 



idar-iii-. wHl distant -j.iral threads ju>t below t he shoulder- 



. and about 1 1. ohli.pic. pr..eunibent lamella-. LriiL r th. ~> mill. 



Off (''< We* India, :',!( i/,,,.s-. 



