70 



SCAPHELLA (Volute) AKNHEIML 



"Shell regularly formed, elongate-ovate; body whorl snore 

 than | as long as the spire; the spire an inch long, and made up of 

 6 whorls, the terminal nucleus being very small, pointed and ob- 

 lique, which latter character places this species in the section 

 Scaphella of Dall. Ground color obscure yellow, covered by a 

 layer of chalk-like deposit. The body whorl has some coarse 



longitudinal elevations and depressions, remnants of former lip ex- 

 tensions, and there are .2 large patches of dark rusty red at a wide 

 interval which do not appear to form an interrupted band. The 

 aperture is elegantly formed and measures 1-J inches long by J in. 

 wide. The inner lip is regularly outlined on the columella; col- 

 umella plaits 4, sharply oblique, the last one strongest, forming a 

 prominent ridge parallel to the canal. The upper outlines of the 

 mouth meet in a sharp angle, but the base has a well defined bi- 

 furcation. The whole of the aperture and the edge of the outer 

 lip are heavily coated with enamel of a yellowish tint, and rust 

 stained. Size 3-J- inches long, and 1-g- inches wide. ' Animal 



without operculum. Dredged in Monterey bay, California," — J.J. 

 Rivers, Ca ac pr ser 2, 3: — ; Nautilus 5 : 111-112. 



UVAMLLA BEG1NA. 



"Shell conical, imperforate, black or purplish-black; whorls 6, 

 -7, concave, longitudinally somewhat obliquely plicated, the plica) 

 more or less projecting at the suture, and on the e Ige of the basal 

 whorl, producing an undulating or crenuiated effect. Otherwise 

 sculptured by incremental striee which traverse the surface and 

 cross the plicae at right angles. Base concave, radiately, closely 

 and prominently striated, more conspicuous, flattened, coalescing^ 

 and sinuously curving at the edge. Commencing at the point 



where the outer lip joins the body whorl, a shallow groove follows 

 parallel to the periphery and extends toward the aperture, without 

 interrupting the basal sculpture. Aperture obliquely subangulate, 

 black-rimmed and crenuiated on the thin edge of the outer lip; 

 nacreous, silvery white toward the edge, bright lustrous golden 

 yellow within and around the umbilical region which latter though 

 deeply pitted is not open. Columella white, calloused, arcuated 

 with a moderately developed, rib bounding the umbilical depres- 

 sion, and terminating in a single tubercle. This ribis paralled by 

 a shallow furrow terminating in a notch just below the tubercle, 

 and by an exterior or outer ridge, part of the way double, of a 



