new Species of Pleurotomide. 217 
Pleurotoma (Mangilia) inepta. 
Testa ovato-fusiformis, turrita, tenuis, alba; anfractus 7, superne 
breviter declives, deinde conyexiusculi, costis 16-17 (in anfr. 
ultimo versus basim attenuatis) instructi, ubique transversim 
tenuiter conferte striati; apertura anguste ovata, longit. totius 
38 paulo superans; columella tenui-callosa; labrum extra in- 
crassatum, intus leve, superne modice sinuatum ; canalis brevis. 
Long. 11 mill., diam. 43. 
Hab. Honduras (Dyson). 
This species has no very remarkable characteristic. It is 
simply rather closely ribbed, finely spirally striated, and has 
a little of the general aspect of the section Cythara. 
Pleurotoma (Mangilia) millestriata. 
Testa oblonga, turrita, alba, supra costas ad basim et circa anfr. 
ultimi medium prope basim supra costas rufo-punctata; anfrac- 
tus 7=8? (apice abrupto), reliqui 5 convexiusculi, costis 7-8 (in 
anfr. ultimo ad basim supra caudam transversim flexis) instructi, 
ubique minute spiraliter striati; apertura elongato-ovata, longit. 
totius ad 2 equans, labrum costa ultima incrassatum, superne 
leviter sinuatum ; canalis brevis, angustus, basi truncatus. 
Long. 11 mill., diam. 33. 
Hab. St. Thomas, West Indies. Coll. Cuming. 
The manner in which some of the ribs on the body-whorl 
turn suddenly at right angles to the base of the columella is 
very remarkable. The penultimate and the three or four 
preceding ribs exhibit this character. At the upper ends, a 
little below the suture, the ribs are faintly angled; and the 
dots on the base in the upper whorls and on the middle and 
lower part in the body-whorl are so faint that they might be 
easily overlooked. ‘There are also a few faint dots between 
the ribs, just below the suture. 
Pleurotoma (Mangilia) caledonica. 
Testa subquadrato-ovata, alba, epidermide fugaci, tenui, pallide 
lurida amicta; anfractus 8, convexi, costis 7 continuis (in anfr. 
ultimo basi productis) superne ad suturam undulatam productis 
instructi, ubique minutissime spiraliter striati; apertura longitu- 
dinis teste 56 equans; columella levis; labrum extra incras- 
satum, intus lave, prope suturam leviter sinuatum ; canalis brevis- 
simus, Vix recurvus. 
Long. 11 mill., diam. 43. 
Hab. New Caledonia (Brenchley). 
In form this species somewhat resembles Cythara cithara, 
Gould ; but the penultimate whorl is larger, and the columella 
and labrum are not lirated. ‘The suture is very prettily un- 
Ann. & Mag. N. Hist. Ser. 5. Vol. x. 15 
