64 Zooloyical Society. 



the Pacific ; and the whole, without exception, from within the Tro- 

 pics. The localities of eleven are unknown. 



They most usually occur under a small incumbent pressure, gene- 

 rally at a depth of from five to eighteen fathoms. Some are found 

 about low water, and with much constancy they affect situations 

 where the floor of the ocean is composed of sandy mud. 



Terebra, Bruguiere. 

 Terebra robusta. Ter. testCi turrito-subulatd, solidd, ponderosct, 

 albidd,flammeis longitudinalibns interruptepictd; anfractibus infe- 

 rioribus rotundutis, indivisis, Icevigatis., superioribits versus extre- 

 mitatem spirce subplanulatis , unocinguliferis , longitrorsum pUcatis ; 

 anfractu ultimo rotundato triseriatim picto, ad basin coarctato ; 

 aperturd elongatd; columella arcnatd, subcallosd ; epidermide luteo- 

 fuscd ; operculo parvo, crasso. Axis 57 lin. 

 Hab. West coast of America, between 8° 57' and 21° 32' north 

 latitude ; namely at Panama, Gulf of Nicoya, Gulf of Papagayo, and 

 San Bias : in from four to eighteen fathoms, sandy mud. 

 Cab. Belcher and Cuming. 



Terebra succinea. Ter. testa subulatd, acuminatd, succined, Ice- 

 vigatd; anfractibus planulatis, lined impressd divisis, longitrorsum 

 plicis obsoletis vel lineis arcuatis incrementi minutis, transversim 

 infra lineam impressam, leviter striatis ; ared subconcavi, punctis 

 parvis fuscis distantibus biseriatim cinctd, versus margines tuber- 

 culato-incrassatd. Axis 54 lin. 



Hab. } 



Cab. Cuming. 



Two specimens of this elegant species are in the above collection, 

 without any history attached to them ; they have evidently been 

 highly cleaned, but retain the appearance of having been once covered 

 by an epidermis. 



Terebra coxsors. Ter. testd gradatim subulatd, Icevigatd, politd, 

 albidd, flammeis paUidis fuscis ornatd ; aifractibus subplanulatis, 

 superne lined impressd divisis, ared superiore spirce leviter tuber- 

 culatd ; anfractu ultimo prope basin fasciato ; aperturd inferne 

 subeffusd ; columelld breviusculd. Axis 31 lin. 

 Hab. Tahiti, Society Islands. 

 Cab. Cuming. 



Its nearest ally is T. dimidiata, than which it is far more gradually 

 subulate ; the upper area of the divided whorl is raised and somewhat 

 rounded ; the white is the base colour of the shell, and the last whorl 

 is distinctly banded. 



Terebra spectabilis. Ter. testd subulatd, la:vigatd, politd; an- 

 fractibus superne sulco impresso divisis, infra longitrorsum pU- 

 catis, interstitiis Icevigatis, medio saturate castaneis, inferne albis ; 

 cingulo tuberculato, ulbido ; anfractu ultimo fasciato ; columelld 

 elongatd. Axis 13| lin. 

 Hab. Guinea, on the sands ; Humphrey. Sumatra, on the sands : 

 ElUs. 



Cab. Cuming. 



