304 Mr. E. A. Smith on 
mentiformis ; columella transversim lirata; canalis profundus, 
angustus, leviter recurvus. 
Long. 13 mill., diam. 44. 
Hab. Persian Gulf (Col. Pelly). 
This shell has considerable affinity to P. spurca, Hinds, 
but differs in the upper part of the whorls lacking spiral stria- 
tions, the canal being shorter, and the sinus not so produced 
outwardly to the right. 
Pleurotoma (Glyphostoma) biservata. 
Testa breviter fusiformis, turrita, albida; anfr. 8, primi 2 leves, 
ceeteri superne decliviter planulati, medio angulati, inferne plani, 
longitudinaliter costati (in anfr. ultimo costis 14 medio obsoletis), 
liris spiralibus 5 cincti, superioribus duabus tenuibus supra angu- 
lum sitis, sequentibus duabus magnis supra costas nodulosis, 
infima juxta suturam tenui; anfr. ultimus infra liras nodulosas 
liris aliis ad 10 ornatus; apertura parva, longit. totius ad ;4 
eequans ; columella callo tenui ad suturam incrassato induta, medio 
liris 3-4 (superne maxima) ornata; labrum intus extraque in- 
crassatum, intus bidentatum ; sinus magnus ; canalis brevis, re- 
curvus. 
Long. 8 mill., diam. 2}. 
Hab. ? 
The lip of this shell is very peculiar, perhaps abnormal : 
it is thickened on the outside by the last longitudinal rib ; and 
within there is a second rib, leaving a groove between it and 
the outer one; in fact the labrum may be said to have two 
margins. ‘The two nodulous lirations are considerably larger 
than the others. 
e 
Pleurotoma (Glyphostoma) obtusicostata. 
Testa anguste ovata, crassa, lutescens, infra medium anfr. ultimi 
castanea; anfract. 9, convexiusculi, superne prope suturam levis- 
sime constricti, costis 12 crassis, rotundatis, paululum obliquis 
instructi, liris confertis tenuibus supra ac infra costas continuis 
ubique ornati, paucis circa caudam quam ceetere paulo majoribus ; 
apertura parva, longit. totius 3 equans ; labrum extra costa in- 
crassatum, basi castaneo maculatum, intus liris tenuibus curtis 
circiter 10 (infima crassa) armatum, prope suturam sinu suba- 
mentiformi emarginatum ; columella castanea, transversim obso- 
lete tenuiter lirata ; canalis angustus, brevissimus, leviter recurvus. 
Long. 8 mill., diam. 22. 
Hab. ——?, Japan probably. Variety from the Persian 
Gulf (Pelly). 
In the specimen from the Persian Gulf the labrum has a 
second chestnut spot above, and the spiral lines are a little 
coarser than in the type. 
