250 EEV. E. B. WATSOTS' OK THE 



the progress of growth ; outside of this swelling lies a small 

 shallow, open, but well-defined furrow, beyond which on the 

 extreme edge of the operculum rises a single small, simple, 

 narrow flange.— H. 0-4.7. B. 0-42. 



The marked features of this species are the curved radiating 

 riblets below the suture, the two smoky bands, the small dark 

 prominent spire, the sharp apex, and the entire absence of the 

 slightest trace of the reddish-brown flammulations some trace 

 of which is always visible in iV. varialilis, Eecl., and N. Dill- 

 wynii, Payr. It is very common from the whole coast of Madeira 

 and of Porto Santo, from 10 to 50 fms. I found it sparingly 

 represented in the collections of Mr. Lowe and of Mr. Johnson. 



Pam. SCALAEIID^. 



Gren. ScALAEiA, Lam. 



17. ScALAEiA EHiPS, u. sp. {pi^J, wicker-work.) 

 Shell small, conical, rather strongly but sharply ribbed and 

 spiralled ; carinated round the smooth and flattened base, a high 

 narrow spire, depressed whorls which are rounded at their 

 profile, an impressed suture ; it is dull, somewhat ruddy, and has 

 a small, conical, fine-tipped, pale chestnut-coloured, smooth em- 

 bryonic apes. Sculpture — Longitudinals : there are on the 5th 

 {i. e. last) whorl 22 prominent but narrow palish ribs cut ofl" 

 at the basal carina, separated by smooth surfaces of double their 

 breadth ; they follow closely the plane of the axis, and slowly 

 diminish in number all the way up the spire. Spirals : there 

 are on the body-whorl 5 prominent spirals very similar to the 

 longitudinals, beneath which they pass without forming knots 

 but throwing out these others somewhat sharply ; of these spirals 

 the two at the periphery are stronger than the others and 

 slightly more distant from each other ; the wide flattened base 

 (whose edge projects slightly beyond the curve of the last whorl, 

 and thus forms a carina) is microscopically scored with curved 

 radiating lines and with much ruder but fainter spiral threads. 

 Colour somewhat ruddy, with rather paler ribs and base, the 

 pillar being almost white, while the apex is glossy chestnut. 

 Spire high and narrow, with barely convex profile-lines. Whorls 

 oi exclusive of the apex ; they are rather short, with a rounded 

 profile. Suture strong and deep, very little oblique. Apex a 

 very beautiful glossy pale chestnut little cone of 4 whorls, which 



