1880.] MR. E. A. SMITH ON NEW SHELLS. 481 



spiraliter strlati, inferne tenuiter costati. Anfr. ultimus infra 

 medium contractus, iti medio zona alba. Columella plica sub- 

 tuberculiformi superne instructa. 



Long. 45 mill., lat. 7. 



Hab. Japan {Mr. Maries^. 



The nodules of the upper row are larger and much more con- 

 spicuous than those of the lower ; the latter are oblique and sepa- 

 rated from those above by an impressed line. The costse are not 

 much elevated, a little arcuate, and correspond in number (about 20 

 on a whorl) and position with the tubercles. The lower half of the 

 volutions, or that occupied by the ribs, is spirally striated, the striae 

 being continuous over the costse, and not equidistant. The inter- 

 stices between the nodules also show indications of spiral lines. Tlie 

 reddish-brown variegation takes the form of longitudinal oblong 

 blotches, which are further apart upon the upper volutions than 

 upon the lower ones. The upper series of granules is comparatively 

 free from brown maculations. The costse upon the last whorl ex- 

 tend to the base, where they become obsolete. The columella is 

 covered with a callosity, and towards the upper part exhibits a pro- 

 minent plica. 



I take this opportunity of changing the name of a species described 

 by me in the ' Annals and Magazine of Natural History,' ser. 4, 

 vol. xi. p. 26/(1873), as Myurella belcheri, as that name had already 

 been employed by Philippi for another species. In its stead I now 

 propose guayaquilensis, as the type specimen was collected by Sir 

 Edward Belcher at Guayaquil, in Ecuador. 



Trophon stuarti. (Plate XLVIII. fig. 6.) 



Testa breviter fusiformis, alba. Anfractus 7, superne planati et 



angulati lateribus planis, costis late lamelliformihus, aliquanto 



obliquis, erectis, superne ad unguium valde sursum productis 



dextrorsumque curvatis, costis transversis {in anfr. superioribus 



2-3, in ultimo 4) cequidistantibus, et supra longitudinalibus con- 



tinuis instructi. Apertura irregulariter ovata, inferne in canalem 



producta. Canalis curvatus, retrorsus, aperturam fere cequans. 



Columella leviter arcuata, callo tenia ex'tus libera induta. La- 



brum expansutn, casta ultima lamelUformi extus munitum. 



Long. 53 mill., diam. 21. Aperturse (cum canali) iong. 31, lat. 



intus 10. 



Hab. Vancouver's Island {Cutter). 



This is a pure white shell, remarkable on account of the thin 

 lamellae which adorn it. At the upper part, at the angle of the 

 whorls, these are much prolonged upwards, hollow on one side, 

 ridged on the other, and curved to the right. Of the spiral lirae, 

 that at the angle is rather stouter than the rest. Upon the 

 upper whorls they are proportionally more elevated than upon the 

 last, and, with the longitudinal lamellae, form a coarse reticulation. 

 Upon the body-whorl, towards the lower part, they cease to be erect, 

 are lapped one upon another, and form an imbricated caudal ridge 

 subparallel with the canal. The entire surface is both spirally and 



