ANACIIIS. 153 



C. YoLDiNA, Diiclos. PI. 54, fig. 48. 



Shell with large rounded ribs, forming an obtuse shoulder to 

 the whorls ; lower part of body-whorl with revolving grooves 

 and chocolate-color, rest of surface whitish, with a violet band, 



visible on the spire. Length, 12 mill. 



Habitat unknown. 



Figured but not described, and not since identified ; it is 

 possibly an extreme variety of the last species. 



C. cosTELLATA, Sowb. PI. 54, figs. 28-31. 



Shell narrowl}^ longitudinally ribbed, sometimes slightly tuber- 

 culate on the shoulder of the body-whorl; yellowish brown closely 

 reticulated with chestnut or chocolate, forming an irregular 

 darker band above the peri phei\y, and a broader one below it ; 

 aperture bluish, and sometimes reticulated within ; outer lip 

 slightly dentate, sinuous behind. Length, 16-20 mill. 



Mazatlan; Panama; Guatemala (J) ; Payta, Peru. 



Nearly intermediate in its characters between G. rugosa, Sowb., 

 and C. Jiuctuata, Sowb. C. valida, Reeve (fig, 29), from Gua- 

 temala, is described from a worn specimen of this species. G. 

 varicosa, Gaskoin (fig, 30), is also a synonym ; its locality, Payta, 

 Peru, is probably erroneous. I add also G. macrostoma (Anton) 

 Reeve (fig, 31), erroneousl^'^ said to inhabit the coast of California. 



C, FLUCTUATA, Sowb, PI. 54, figs. 32-35, 



Shell wide ovate, with somewhat turreted spire, nodulously 



ribbed, ribs sharp, curved on the body-whorl, or sometimes 



obsolete below the shoulder ; white, with close, zigzag chocolate 



markings ; epidermis yellowish, translucent, thin ; outer lip 



broadly sinuous behind, callously thickened, and minutely 



dentate within. Length, 16-21 mill, 



Pana7na. 



The synonyms are G. fluctuosa, Duclos (fig, 33), G. siUuralis, 



Gray (fig, 34), G. costata, Duclos (fig, 35). 



^ C. CORONATA, Sowb. PI. 54, figs. 36, 37. 



Shell yellowish white, sometimes stained with' chestnut, with 

 zigzag longitudinal dark chestnut or chocolate lines ; upper part 

 of whorls coronated, the tubercles sometimes giving rise to short, 

 distant longitudinal plications. Length, •5-*75 inch. 



Panama to Cape St. Lucas. 

 20 



