116 ALIA. 



Section Til. Alia, H. and A. Adams. 



Shell thin, smooth, with moderate spire ; aperture oval ; inner 

 lip finely crenulated, outer lip thick, not callous in the middle, 

 striate within. 



C. CARiNATA, Hinds. PI. 47, figs. 35-39. 



Shell smooth ; fulvous, encircled by two or three bands of 

 chestnut and white flocked spots ; base of shell and apex of 

 spire stained with chocolate ; inner margin of the outer lip 

 frequentl}^ similarly colored. Length, 7"5-10 mill. 



Cape St. Lucas, L. Cnl. to Sitka. 



The above is the description of the larger, smooth, northern 

 variety, called by Gould G. gausapata (fig. 31) : these are not 

 carinate, but pass by imperceptible stages into the smaller C. 

 Californiana, Gaskoin, the subcarinate C. Hindsii, Reeve (fig. 

 38), the stumpy, strongly carinate G. carinata (figs. 35, 36) and 

 the equally small, but more graceful, and scarcely carinate G. 

 Gouldi^ Carpenter. I have selected from these names that of 

 the earliest published, but with some misgiving because it 

 describes a state of the species which must be regarded as 

 abnormal ; I have been partly influenced to do this because Mr. 

 W. H. Dall similarly arranged the synonymy of the species ten 

 years since. G. Gouldi is said to differ in its operculum, but the 

 operculum is known to var}^ in other species of Columbella from 

 fusoid to purpuroid. G. collaris. Reeve (fig. 39), is probably a 

 large example of the carinate form. 



C. UNIFASCIATA, Sower1)y. PI. 41. figs. 40-44. 



Shell ovate, smooth, with revolving stride at the base of the 

 body-whorl ; chocolate, with or without a lighter band on the 

 periphery ; chocolate or chestnut-color Avithin the aperture. 



Length, 12 mill. 



Galapagos Islands; Coast of Peru and Chili ; Magellan'' s Straits. 



G. unicolor, Sowb. (fig. 41), the unfigured G. unizonalis, Gray, 

 and G. sordida^ d'Orb. (fig. 42), are synonyms. G. castanea, 

 Gould (fig. 43), is also evidently the same species ; it is said to 

 have been obtained by the Wilkes Exploring Expedition at Rio 

 Janeiro, but as the expedition visited the West Coast of South 

 America also, it is probable that the locality given may be in cor- 



