115 



Columbella GiBBERULA. Col. testd ovato-pyramidali ; spird 

 subulatd ; anfractibus 8-9, pallidis, brunneo nubeculatis, ultimi 

 dorso superne gibberulo, ad utrumque latus varicoso ; aperturd 

 breviusculd ; peritremate incrassato, expanso, intus denticulis 

 nonnullis ; labio interno superne calloso, medio arcuato ; canali 

 brevi, rejlexd : long. -,V> fat. T V poll. 



Hab. ad oras America? Meridionalis et Centralis. 



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

 raccas and Puerto Portrero. 



Columbella turrita. Col. testd elongato-pyramidatd ; spird 

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

 turam articulatis ; aperturd oblongd, superne acuminatd, subcana- 

 liferd ; labio externo incrassato ; peritremate albo, subreflexo, 

 intus lesvi ; columelld arcuatd : long. 1-, V> fat. tV poll. 

 Hab. ad oras America? 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 ; ultimo infra spiraliter striato, superne 

 longitudinaliter costato ; aperturd, labio externo dentibusque in- 

 ternis albis : long. X V> fat- -fa poll. 



Hab. ad Panamam, sub lapidibus. 



Columbella rugosa. Col. testd oblongd, medio gibbosuld ; epi- 

 dermide fused ; spires, apice pleriimque eroso ; anfractibus 7, lon- 

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

 perne longitudinaliter costato, costis omnibus superne unituber- 

 culatis ; aperturd subapertd : long. .V. fat. T V poll. 

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

 Found under stones. 



In general appearance this and Col. Jluctuata resemble each other 

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

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

 with black patches. 



Columbella fluctuata. Col. testd oblongd, albd, nigro vel cas- 

 taneo maculatd et fluctuatd ; epidermide fused ; spires apice ple- 

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

 tis abbreviatis ; aperturd medio coarctatd ; labio externo superne 

 emarginato, interno infra, denticulato : long. T V, fat. 1 5 7r poll. 

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

 Columbella recurva. Col. testd oblongd, turritd, fulvd; spird 

 acuminato-pyramidali ; anfractibus 10-11 3 primis 6 longitudi- 

 naliter costatis ; ceteris serie tuberculorum unicd instructis ; ul- 

 timi dorso subgibbo, parte inferiore transversim striatd ; aper- 

 tures elongates canali longiusculd, recurva ; labio externo reflexo, 

 incrassato : long, l^, fat. -xV poll. 

 Hab. ad oras America? Meridionalis. (Isle of Plata.) 

 Found among coral sand at a depth of seventeen fathoms. 



