209 



14. Cyprsea eximia, G. B. Sowerby. 



References. — Sow. in Strzelecki's " New South Wales," p. 296, 

 tab. 19, figs 1 — 3 (1845). C. (Aricia) eximia (Sow.), McCoy, 

 Pal. Yict., Dec. III., tabs. 28, 29, figs. 2— 2b (1876). 



Pyriform, ventricose posteriorly, beaked at both ends, abruptly 

 and obtusely subtruncate over the flat almost-concealed spire, 

 tapering gradually into a long convex straight beak, which is sup- 

 ported on each side by a narrow triangular, straight and sharp- 

 edged, plate-like extension of the base. At the base of the beak 

 on each side of its upper aspect is an oblong rounded tubercle. 

 The posterior canal is shorter than the anterior one, supported by 

 a flange-like extension of the base, slightly upturned and bent to 

 the left ; its right side is broader, and carries an oblong tubercle. 

 Outer lip inflected, strongly toothed on the inner margin ; inner 

 lip with narrow deep sulci, with broad intervening flat ridges. 

 Columella without an internal plate-like extension. 



Dimensions. — Length varying from about 100 to 65 mm. ; the 

 proportional width, -f^°-^j ; height, y^o^ ; length of snout, -^2_ . ^f 

 anal canal, ^-^, but variable. 



Localities. — Eocene. Muddy Creek ! ; Schnapper Point ! ; 

 Fyansford, and three miles west of Gellibrand River (McCoy). 

 Well-sinking at Franklin, near Launceston (Strzelecki), at a depth 

 of 140 feet ; Table Cape (Hobart Mus.). 



This species is the type of a section not represented in living 

 creation, though having a general resemblance to C. lunbilicata, 

 Sow., constituting Josseaume's Section Umbilia, which may be 

 characterised by the dentate-sulcated inner lip, not denticulate- 

 ridged, as pointed out by G. B. Sowerby in his description of it. 

 Sowerby's comparison was with C. Scottii, C. umbilicata being at 

 that time yet unknown. 



Both Sowerby's and McCoy's figures show the anal canal bent 

 to the right, Avhereas all of several specimens which I have had 

 under examination have it twisted in the opposite direction. 



15. Cyppsea sphsepodoma, spec. nor. 

 A near alliance of C. eximia, but differs by its globose body- 

 whorl, also by the abrupt sinistral curvature of the posterior- 

 third of the aperture and the strong torsion of the f)Osterior canal 

 In other particulars there is a close agreement. 



Dimensions. — Total length, 84 ; leng-th, excluding canals, 46 ; 

 width, 48 ; height, 40. 



The proportional measures of these two closely-related species 

 are — 



Length (excl. canals). Width. Height. 



C. eximia ... 100 82 70 



C. sjohwrodoma ... 100 104 87 



