298 Mr. E, A. Smith on 
them ; and the spiral lirations are arranged close together and 
are slightly granulous on crossing the ribs. Three of them 
around the middle of the whorls and four encircling the lower 
part of the body-whorl, and separated from the above by three 
white lire, are of an olive-brown colour. Probably, in the adult 
shell, the labrum may be furnished with a few denticles 
within. 
Pleurotoma (Defrancia ?) piperata. 
Testa acuminato-ovata, sordide albida, punctis rufo-nigris ornata ; 
anfractus 9, primi tres convexi, primus luteus, ceeteri convexius- 
culi, costis circiter 15 et liris spiralibus 4 supra costas granosis 
concinne cancellati ; anfract. ultimus liris ad 14 succinctus ; aper- 
tura parva, longitudinis totius 2 adequans ; labrum incrassatum, 
intus denticulis 3-4 ornatum, superne leviter sinuatum; colu- 
mella callo tenui induta; canalis brevis, obliquus, leviter recurvus. 
Long. 5 mill., diam. 12. — 
Hab. Straits of Korea (A. Adams). 
The reddish-brown dots are on the granules and are dis- 
posed somewhat regularly. They are frequently three in 
number on each alternate rib, near the suture; but around the 
middle of the body-whorl they do not occur. The West- 
Indian species monilifera, Sowerby, is the nearest. ally of this 
species; it is, however, a little more slender, consists of two 
more whorls, of which the apical ones form a more acuminate 
apex, and the cancellation is finer. 
Pleurotoma (Defrancia?) alternans. 
Testa ovata, albida vel pallide cornea, costis alterne fuscis et albidis 
ornata, anfract. 7?, apice abrupto reliqui 5 leviter convexi, costis 
longitudinalibus 12 (in anfr. ultimo ad basim continuis) et liris 
spiralibus supra costas leviter nodosis (in anfr. penult. 4, in 
ultimus 10) valde cancellati; anfr. ultimus cirea medium lira 
quarta tota albida cinctus, et infra illam coste omnes fuses sunt ; 
apertura aliquanto angusta, longitudinis totius ad 2 equans; 
labrum incrassatum, intus circiter 6-dentatum, superne leviter 
sinuatum ; canalis angustus, brevis, basi truncatus. 
Long. 6 mill., diam. 23. 
Hab. ——? 
The colouring of this species is very remarkable. In the 
upper whorls the ribs are alternately brown and white, and 
the lowest liration, which is in conjunction with the suture 
and encircles the middle of the body-whorl, is wholly white. 
The fifth and sixth lirations on the last, reckoning from the 
suture, are rather far apart, and the longitudinal ribs between 
them are uniformly brown. 
