122 THE NAUTILUS. 
provenance of the specimens) that the present distribution of the 
coast fauna antedates the present volume of the Amazonian dis- 
charge, since it would seem incredible that so many thoroughly 
littoral species should be able to cross the present area of some hun- 
dreds of miles of fresh water in either direction. A few species 
marked with an asterisk are inserted on Dr. y. [hering’s authority. 
Melampus flavus Gmel. 
Bulla striata Brug. 
Terebra cinerea Born,San Paulo. 
Conus verrucosus Hwass. 
Conus mus Hwass. 
Conus daucus Hwass. 
Drillia albinodata Reeve. 
Drillia albocincta C. B. Ads. 
Mangilia limonitella Dall. 
Olivella jaspidea Gmel. 
Olivella nivea Gmel. 
Marginella bullata.* 
Marginella largillierti.* 
Volvarina fusea Sby. 
‘Mitra nodulosa Gmel. 
Turbinella ovoidea Kien.* 
Fasciolaria aurantiaca Lam.* 
Leucozonia cingulifera Lam. 
Pisania pusio var. janeirensis 
Orb. 
Tritonidea tincta Conr. (!) 
Nassa vibex Say, Rio. 
Nassa ambigua Mtg. 
Anachis albella C. B. Ads. 
Anachis catenata Sby. 
Nitidella nitidula Shy. 
Columbella mercatoria L. 
Murex pomum Gmel.* 
Coralliophila galea Ch. 
Sistrum nodulosum C. B. Ads. 
Purpura hemastoma Lam., typi- 
cal, Rio Grande do Sul. 
Purpura heemastoma yar. trini- 
tatensis Guppy. 
Janthina communis Lam. 
Janthina exigua, Bahia. 
Tritonium tritonis var. nobile 
Conr. 
Tritonium femorale L. 
Tritonium chlorostomum Lam. 
Lambidium oniscus L. 
Ranella ponderosa Reeve. 
Cassis tuberosa.* 
Dolium perdix* L., replacing D. 
galea of San Paulo. 
Trivia suffusa Gray. 
Cypreea cinerea Gmel. 
Strombus pugilis L., Bahia and 
southward. 
Strombus costatus Gmel. (not 
south of Bahia, v. Ihr.). 
Strombus gallus L. (not south of 
Bahia, v. [hr.). 
Cerithium literatum Born. 
Cerithium algicola C. B. Ads. ? 
Cerithium atratum var. varia- 
bile? Ads. 
Modulus modulus L. 
Siphonium nebulosum Dillw. 
Vermicularia spirata Phil. 
Petaloconchus irregularis Orb. 
Crepidula plana Say. 
Amalthea antiquata L. 
Capulus incurvatus Gmel. 
Polynices porcellana Orb. 
Polynices lactea Gmel. 
Polynices caudidissima Reel.,* 
replacing the next. 
