116 



CoLUMBELLA LANCEOLATA. Col.testd ubloii^d, furritd, albidii.fulvo 

 varid ; spird acuminato-pyramidali ; anfractibus \0-\'2 ; primis 

 6—7 Icevigatis ; cceteris serie unicd tuberculorum instructis ,• ultimi 

 dorso subgibbo, parte inferiore transversim striatd ; aperturte elon- 

 gata canali breviusculd , subrecurvd ; labio externo incrassato, va- 

 i-iciformi : long. 1-rV. Jut- .V poll. 



Hab. ad Insulas Gallapagos. 



Found in fine coral sand in from six to eight fathoms. 



CoLUMBELLA MACULOSA. Col. tcstd oblongo-siibulatd, alb'uJd, irre- 

 giilariter fulvo maculatd ; spird acuminato-pyramklali ; anfracti- 

 bus 9-10 i primis 7-8 lavigatis ; cceteris tuberculorum serie 

 unicd coronatis ; ultimo serie alterd adjectd ; aperturd brevi, 

 canali subrecurvd : long. 1, lat.-Ju poli. 



Hab. ad littora Americse Centralis. (Guacamayo.) 



Dredged with Col. suhulata in sandy mud. 



CoLUJiBELLA H^MASTOMA. Col. testd oblongd, lavigatd, apice 

 acuminato ; a7ifractibus 7—8, castaneis, albo maculatis, ultimo 

 dorso nigro, iiifrci castaneo ; aperturii elongatd, Jlexuosd ; labio 

 externo extus incrassato, superne p>-o}ninente, albo ; peritremate 

 aurantiaco ; labio interno intiis denticulato ; columelld unitubercu- 

 latd : long. ,V, lat. iV poU. 



Hab. ad insulas Gallapagos et ad littora Panamas. 



Found under stones. 



A dvvarf variety occurs, \vliich difters, however, very slightly in its 

 proportions. 



CoLUMBELLA VARIA. Col. tcstd obloūgd, dccussato-costatd, apice 

 acuminato ; anfractibus 8-9 fuscis, albido variegatis, longitudi- 

 naliter costatis, interstitiis costarum sulcatis ; aperturd subovali ; 

 labii externi extiis incrassati margine superne emurginatd : long. 1 , 

 lat. -J-s poli. 



Hab. ad Panamam, sub lapidibus. 



The ribs cease a little beIow the middle of the lašt volution. 



CoLUMBELLA scALARiNA. Col. tcstd ovatd, lougitudinūHter cos- 

 tatd, apice pyramidali ; anfractibus 6-7, superne contabulatis,t 

 longitudinaliter costatis, interstitiis costarum decussatis, costis ad 

 basin continuis ; aperturd coarctatd, superne emarginatd ; joeri-^ 

 tremate intiis denticulato, dcnticulis superioribus mnjoribus : long. 

 ^J, lat. -^ poli. 



Hab. ad Panamam et Chiriqui, sub lapidibus. 



This shell is of a pale colour, with spirai dark bro\vn bands j it ia 

 covered vvith a thin but rough epidermis. The ribs continue to the 

 base. 



,' CoLUMBELLA PYROSTOMA. Col. tcstd ovatd, medio tuTgidd ; spird 

 brevi, conicd ; anfractibus 6, longitudinaliter tuberculato-costatis, 

 costis nigris, interstitiis rufescentibus ; aperturd rufd : long. ,V, 

 lat. -fir poli. 



Ha6. ad oras Americae Meridionalis. (Panama and Gallapagos.) 



