46 



OANCELLARIA. 



C. alveata. Turrited, with oblique acute costao, and revolving elevated 

 lines; volutions six, the two terminal ones smooth; aperture semilunar; 

 three folds on the columella, the. lower one obsolete; labrum obscurely 

 striated. 



ACTEON. 



A. poiniliuH. Narrow, with revolving narrow sulci which are transversely 

 striated; fold on the columella much elevated and distant from the base; 

 labrum thick, with a sharp waved edge. 



A. idonem. Narrow-elliptical, with narrow transversely striated sulci, 

 which are distant on the superior portion of the body whorl ; fold on the 

 columella elevated and very obtuse; labrum thickened. 



A. coatellatuB. Slightly veutrico.sc, with revolving costse, or sulci which 

 are transversely striated; fold obsolete or wanting; umbilicated. 



SIGAUETUS. 



8. arctatm. Discoid, with wrinkled spiral raised striae; umbilicus very 

 small; beneath flattened; aperture oblong-oval. 



8. dfclieu*. Obliquely suboval, with distinct impressed and intermediate 

 flne Htrioj; spine slightly prominent; umbilicus small, partly closed by 

 the callus; aperture patulous. 



SCALAUIA. 



8. M!**ilit. Subulate, with rather thick longitudinal costte, and minute 

 crowded spiral lines; whorls nine, sessile or contiguous; base of the body 

 whorl carinated. 



TUUKITELLA. 



T. oln-utu. Subulate, with about eleven slightly convex volutions, with 

 about seven sharp elevated stria; on each, and intermediate fine crowded 

 lines; space about the suture indented. 



BUCC1NUM 



B. perlatum. Subulate, with prominent longitudinal lines; and obsolete 

 spiral stria?; volutions about twelve, acutely subturrited. 



B. prortum. Fusiform, with six convex* volutions; spirally striated; 

 strim obsolete on the middle of the whorls; spire subulate; base very 

 slightly reflected; aperture narrow-elliptical, more than half the length of 

 the shell. 



B. iDiin-nitiii, Subulate, with about six slightly convex volutions; with 

 distant obtuse longitudinal ribs, and acute prominent equidistant spiral 

 strue; aperture contracted, less than half the length of the shell; base 

 very slightly reflected. 



TURB1NELLA. 



T. pritat. Inflated, thin; spire depressed, apex papillated; whorls pli- 

 cated at 'the suture; base strongly striated; columella with four oblique 

 folds; aperture effuse at base; the colored markings exhibit spiral series of 

 dark quadrangular spots. 



T. prmtenuu. Subfusiform,' thin, ventricose, with spiral impressed lines; 

 spire prominent; apex very obtuse; volutions slightly indented; colum- 

 ella four plaited; base narrowed and somewhat elongated. 



[71 1 



