105 



Chiton Pusio. Chit, testd ovali, lavigatd, olivaced, punctulis vi~ 

 ridibus numerosis ornatd ; valvarum marginibus anticis lateri- 

 busque rugulosis • long. -jV* &tf . tV poll* 

 Hab. ad Valparaisam . 



Found on Amphidesma solidum in from thirty to fifty fathoms 

 water, with a sandy floor. — G. B. S. 



Genus Marginella. 



Marginella curta. Marg. testd ovatd, cinerascente-fulvd ; spird 

 brevi ; labii externi reflexi margine externd castaned, facie albd ; 

 labii interni expansi et incrassati margine castaned ; columelld 

 quadriplicatd, plicis cequalibus : long. -&?, lat. ■&■ poll. 

 Hab. ad Iquiqui et ad Paytam. 



The body-whorl, in fully grown specimens, is rather angular at 

 the upper part, and it is wholly covered with white specks. It 

 was dredged in fine black sand. — G. B. S. 



Genus Bulinus. 

 * Labio externo tenui, acuto. 



Bulinus Vexillum. Bui. testd pyramidali, albente, vittis castas 

 nets fasciatd ; anfractibus 6 levissime longitudinaliter striatis ; 

 umbilico subobsoleto : long. 44-, lat. -rV poll. 



Hab. in Sinu Panama?. (King's and Saboga Islands.) 



Found on the trunks of large trees. — W. J. B. 



Bulinus pustulosus. Bui. testd fusiformi, efusco albente, subdia- 

 phand ; anfractibus 6, striis moniliformibus frequentibus longu 

 tudinalibus ; umbilico mediocri : long. T V, lat. T V {circa) poll. 



Hab. in Chili. (Huasco.) 



Found under stones on elevated ground. — W. J. B. 



Bulinus Pupiformis. Bui. testd griseo-albd, pupiformi, longitu- 

 dinaliter levissime striatd ; apice nigro-fuscescente ; labro subre- 

 flexo : long. -£, lat. % poll. 



Hab. in Chili. (Huasco.) 



Found under stones and in shady places. — W. J. B. 



Bulinus Panamensis. Bui. testd ovato-fusiformi, subglabrd, dia- 

 phand, pallide fulvd; anfractibus 6 subventricosis, labro vix 

 subreflexo : long. 1, lat. ^ poll. 



Hab. in Sinu Panamre. (King's and Saboga Islands.) 



Found on the trunks of large trees. — W. J. B. 



Bulinus albicans. Bui. testd ovato-ventricosd, subpellucidd, fus- 

 ed lineolis strigisque longitudinalibus albis varid ; anfractibus 6 

 longitudinaliter striato-rugosis ; columelld et fauce rubro-casta- 

 neis ; umbilico mediocri : long. 1%-, lat. T V poll. 

 Hab. ad Copiapo, Chili. 



This species, which resembles Bui. guttatus in its white mark- 

 ings, but differs from that shell in shape and other characters, was 

 found by Mr. Cuming at Copiapo, in the dry sand on the elevated 

 ground, near the port. The upper part of the inner lip is some- 



