494 Mr. E. A. Smith's Diagnoses of 



perne paululum constricti, costis rotundatis validis, superiic versus 

 suturam attenuatis (in anfr. ultimo 7 ad peripheriam evanidis) 

 instructi, sutura simplici undulata sejuncti, liris spiralibus 8-4 

 supra costas aliquanto incrassatis striisque aliis cincti ; anfract. 

 ultimus infra peripheriam valde constrictus, in caudam elongatam 

 productus, ubique spiraliter Kratus ; apertura angusta, longit. 

 totius f adaequans, intus fuscesceiis ; sinus minima profundus ; 

 canalis elongatus, recurvus. 

 Long. 21 mill., diam. 6. 



Hob. ? 



The few roundish ribs are broadest at the lower ends and 

 gradually diminish upwards. The operculum is unguicular, 

 with a groove running lengthwise from the apex to the superior 

 margin. 



Pleurotoma [DrilUa) latisinuata. 



Testa fusiformis, turrita, dilute luteo-fuscescens (interdum omnino 

 nivea) ; anfract. 12, superne excavati, medio carinati et angu- 

 lati, infra angulum oblique plicati, plicis hand ad suturas exten- 

 dentibus (in anfr. ultimo circiter 14 fere obsoletis), liris spiralibus 

 elevatis albis(in anfr. superioribus 3-4, in ultimo ad 12) suprema 

 quam casterse majore in medio anfractuum, et striis gracilibus inter 

 liras oruati ; apertura lata, sordide albida, longitudinis testte fere 

 \ aequans ; labrum superne valde et latissime sinuatum, paulu- 

 lum post marginem costa tuberosa incrassatum ; columella callo 

 tenui induta, prope suturam tuberculata ; canalis mediocriter 

 elongatus, leviter recurvus. 



Long. 50 mill., diam. 35. 



Hob. China. 



This species is allied to P.flavidida, Lamk. The upper half 

 of each Avhorl is nearly smooth, as the plications extend 

 scarcely beyond the central large spiral liration which marks 

 the angulation of the whorls. Sometimes, this lira being- 

 double, the whorls are less acutely angular. 



Pleurotoma [DrilUa) nodilirata. 



Testa fusiformis, turrita, albido-cornea ; anfract. 11, superne con- 

 cave excavati (excavatione arcuate striata), medio obtuse angulati, 

 infra suturas carina tenui marginati, infra excavationem costis ob- 

 liquis modico validis (in anfr. ultimo circiter 12 basi fere con- 

 tinuis) instructi, liris spiralibus prsecipue super costas elevatis (in 

 anfr. superioribus 5-6, in ultimo circiter 20 subnodulosis) cincti ; 

 anfr. ultimus basi attenuatus ; apertura angusta, longitudinis 

 totius fere | aequans ; columella recta, crasse callosa ; labrum 

 extra valde incrassatum ; sinus modicus ; canalis angustus, re- 

 flexus. 



Long. 25 mill., diam. 8. 



Hah. Philippine Islands. 



