92 Proceedings of the Royal Society of Victoria. 



tlipy increase in number from behind forward, tliere being about 

 thirteen on the posterior spire-whorl, increasing to from twenty 

 to twenty-seven on the body-whorl. Surface also marked trans- 

 versely by lines of growth and by very fine parallel strife. 



Diiitensiofis. — Type, length, 30 mm. ; breadth, 14 mm.; length 

 of aperture, 15 mm. ; breadth of aperture, 5 mm. A larger 

 specimen gives the following dimensions : — length, 36 mm. ; 

 breadth, 17 mm. ; length of aperture, IS mm. ; breadth of aper- 

 ture, 6 mm. ; and the largest specimen yet to hand has a length 

 of 43 mm., and a breadth of 20 mm. 



Locality. — Eocene beds of Table Cape, Tasmania. Three ex- 

 amples. An undescribed species of Lyria has been obtained by 

 Mr. J. Dennant from the lower eocene beds at Spring Creek, 

 near Geelong, which is, I Ijelieve, a rejaresentative of the above 

 species. 



Observations. — Two species of this genus have already been 

 described, Z. harpiilaria, Tate, a common eocene shell, and L. 

 geiiiinata, Tate, a rare miocene species. The present species 

 make*? the second eocene form and shows many features of 

 general resemblance to our lining L. /iiitr(eforinis, from which, 

 however, it is readily separable upon critical examination. The 

 principal differences whereby our fossil may be distinguished 

 from this living species are the less robust shell, the much 

 smaller embryo, more acute spire, less convex whorls, shorter 

 and narrower canal, and its slender, acute and gi'adually fading 

 costse, and the absence of spiral grooving at the anterior end of 

 the body-whorl. From our previously described eocene shell, L. 

 harpu/aria, Tate, it may be at once separated by its smaller 

 embryo, more acute spire, less defined shouldering at the suture, 

 non-persistent costie, and the absence of tlie spiral striie, which 

 are usually most distinct at the anterior end of that species. 

 From the miocene shell, L. ge/nitiafa, it is still further removed 

 and admits of easy distinction, and on that account I think it is 

 hardly necessary to draw attention to any special diflerential 

 characters. 



26. Voiuta anticingulata, McCoy. 



V. anticingulata, McCoy, Prod. Pal. Vic. Dec. I., pp. 24-26, 

 pi. vi., figs. 2 to 4. 



