new Species o/'Pleurotomidse. 327 



Cithara striatella. 



Testa ovato-fusiformis, subturrita, alba ; anfract. 7, primi 2 convexi, 

 Iseves, cueteri siibangulariter perconvexi, costis 7 prominentibus 

 sed baud crassissimis (in anfr. ultimo basim atlingentibus) in- 

 structi, ubique [striis confertissimis, minutis, dense insculpti ; 

 apertura anguste ovata, longit. totius fere 1 adaequans ; columella 

 fere recta, liris paucis transversis ornata ; labrum costa ultima 

 incrassatum, superne obsolete sinuatum, intus lirato-dentatum ; 

 canalis brevissimus. 



Long. 8 mill., diam. 3. 



Hah. Vtr^mnGxxM [Col. Felly). 



The seven prominent ribs are not continuous up the spire 

 in the three specimens before me, but appear to be disposed 

 irregularly, sometimes being continuous ibr two whorls and 

 then falling alternately. 



Cithara elevata. 



Testa breviter fusiformis, turrita, alba ; anfract. 9, primi 2-3 laeves, 

 convexi, cseteri superne declives, deinde angulati, infra angulum 

 planiusculi, sutura perobliqua sejuneti, costis rectis modice tenu- 

 ibus 10 (in anfr. ultimo ad basim continuis) instruct!, et trans- 

 versim tenuiter striati ; apertura subangusta, longitudinis totius 

 ad -J- sequans ; columella rectiuscula, transversim obsolete lirata ; 

 labrum costa ultima incrassatum, superne vix sinuatum, intus 

 liratum ; canalis mediocriter angustus, brevis. 



Long. 15 mill,, diam. 4. 



Hah. Persian Gulf {Col Pelhj). 



Between the ribs above the angle the whorls are faintly 

 stained with a very pale dirty olive tint. The spire is rather 

 elongate, occupying rather more than half the entire length of 

 the shell. 



Cithara Waterhousei. 



Testa ovata, alba, aurantio-rubro zonata ; anfract. 8 ? (apice abrupto), 

 ultimi 4 convexiusculi, costis leviter obliquis superne promi- 

 nentibus instruct! (in anfr, idtimo 10, basi continuis), ubique 

 minutissime spiraliter striati, sutura profunda discreti ; apertura 

 longit. totius \ paulo superans ; columella paululum obliqua, 

 transversim irregulariter lirata ; labrum extus incrassatum, intus 

 denticulatura, suturam versus sinu parvo incisum ; canalis brevis- 

 simus. 



Long. 9 mill., diam. 3|-. 



Hah. ? 



The bands on the body-whorl are so numerous as to give 

 the shell at a little distance the aspect of being uniformly 



