Tertiary.'] PALEONTOLOGY OF VICTORIA. [Mollusca. 



Plate XXXVII., Fig. 1. 

 VOLUTA HANNAFORDI (McCoy). 



[Genus VOLTJTA (Lam.). (Sub-kingd. Mollusca. Class Gasteropoda. Order Pectini- 

 brancHata. Fam. Volutidae. 



Gen. Char. — Shell ovate or fusiform ; apex of spire obtuse, mammillated, and oblique ; 

 aperture large, with a wide notch in front, not produced into a canal ; columella or inner lip 

 with several large oblique prominent plaits, of which the anterior ones are usually largest.] 



Description. — (^ee Plate VI., Decade I.) 



Explanation of Figure. 

 Plate XXXVn. — Fig. 1, front view of specimen, natural size. 



Platk XXXVII., Figs. 2-4c, 

 VOLUTA STROPHODON (McCoy). 



Description. — Shape varying from ovate to turbinate or conoidal ; spire obtuse, 

 varying^ greatly in prominence, apical angle from 60° to 110°, u.sually about 80°, of 

 6 whorls, the 3 apical ones of which are slightly convex, smooth and without spines, 

 the succeeding whorls each with about 11 small conical spines close to the suture on 

 the spire and crowning a shoulder of varying prominence on the body whorl ; space 

 between the spines and suture concave anteriorly, crossed by lines of growth ; spines 

 on body whorl continued as variably prominent ribs a variable distance towards the 

 anterior end (usually less than half way) ; body whorl tapering gradually to the 

 anterior end, the side lines being sometimes nearly straight, more usually with a 

 slight concavity near the front, and a slight convexitj^ thence to the shoulder ; mouth 

 narrow, outer lip only slightly thickened in very old specimens ; inner lip with 4 

 very large thick plaits, the posterior larger and less oblique than the anterior ; surface 

 marked with lines of growth only (no spiral strife at anterior end). Average length, 

 1^ inches (very old example, 2 inches 3 lines) ; proportional width thereto, -/jP^ to 

 -fjj% ; length of body whorl, -^^^ to -j^j^ ; length of penultimate whorl, -j'^^^ to -jgg ; 

 width of penultimate whorl, -jYjr- 



This Volute seems to represent tlie Volutilites spinosus and V. 

 depauperatus of the European Upper Eocene strata in size, shape, 

 and in number and fonn of spines and riljs ; but, as in the Victorian 



DEC. IV. [ "'5 ] U 



