115 



CoLUMBELLA GiBBF.RUi.A. Col. tcstd ovūto-pyramidali ; spird 

 svbnlatd ; a/ifracfibus 8-9. pallidis, hrunneo mibeculatis, vltimi 

 dorso supcrnP gibberulo, ad utrumųue lalus varicoso ; aperturd 

 breviiisculd ; peritremale incrassalo, eipanso, intus denticulis 

 nonnuUis ; labio interno superne calloso, medio arcuato ; canali 

 brevi, rcflcrn : long. .V, Jot. n V poli. 



Hab. ad oras Americče Meiidionalis et Centralis. 



Found in sandy mud at eleven fathoms depth, at the Bay of Ca- 

 laccas and Puerto Portrero. 



CoLUMBELLA TURRiTA. Col. testd elongcito-jjyramidatd ; spird 

 subulatd ; anfractibus 10, albidis, fiisco reticulatis, et prope su- 

 turatn articulatis ; ajyerturd obfongd, superne acuminald, subcana- 

 liferd ; lubio extcrno incrassuto ; peritremate albo, subrefiexo, 

 intils Icevi ; columelld arcuatd : long. 1 ,V, lat. -^ poli. 

 Hab. ad oras Americae Centralis. (Bay of Montijo, and St. Elena.) 

 Found in coarse gravel and sandy mud at a depth of ten fathoms. 



CoLUMBELLA FULVA. Col. testd ovato-subulatd, fulvd, epidermide 

 minutissime reticulatd indutd ; anfractibus 10 ; superioribus lon- 

 gitudinaliter costatis ; vltimo infra spiraliter striato, superne 

 longitudinaliter costato ; aperturd, labio externo dentibusaue in- 

 ternis albis : long. -rV, lat. -^ poli. 



Hab. ad Panamam, sub lapidibus. 



CoLUMBELLA RUGOSA. Col. testd oblongd, medio gibbosuld ; epi- 

 dermide fuscd ; spira apice pleriimgue eroso ; anfractibus 7, lon- 

 gitudinaliter costato-rugosis ; ultimo infra spiraliter costato, su- 

 perne longitudinaliter costato, costis omnibus superne unituber- 

 culatis ; aperturd subapertd : long. ,V. lat. -rV poli. 

 Hab. ad oras Americae Meridionalis. (Panama et Xipixapi.) 

 Found under stones. 



In general appearance this and Col. fluctuata resemble each other 

 nearly, but the aperture of Col. fluctuata is much narrovver. When 

 the epidermis is removed, the shell is white, covered nearly all over 

 with black patches. 



CoLUMBELLA FLUCTUATA. Col. tcstd oblongd, ttlbd, nigro vel cas- 

 taneo maculatd et fluctuatd ; epidermide fuscd ; spira apice ple- 

 rumque eroso ; anfractibus 7, longitudinaliter costatis, ultimi cos- 

 tis abbreviatis ; aperturd medio coarctatd ; labio externo superne 

 emarginato, interno infra denticulato : long. -rV. lot. -,V poli. 



Hab. sub lapidibus ad oras Americse Centralis. (Gulf of Nocoiyo.) 



t CoLUMBELLA RECURVA. Col. testd oblougd, turritd , fulvd į spird 

 acuminato-pyramidali ; anfractibus 10-11 5 primis 6 longitudi- 

 naliter costatis ; ccBteris serie tuberculorum iinicd i7istructis ; ul- 

 timi dorso subgibbo, parte inferiore transversim striatd ; aper- 

 turce elongatce canali longiusculd, reciirvd ; labio externo reflexo, 

 incrassato : long. l-^^, lat. ^V poli. 

 Hab. ad oras Americae Meridionalis. (Isle of Plata.) 

 Found among coral sand at a depth of seventeen fathoms. 



