169 



are more corrugate and callous. Dr. Dall * recognizes iV. vihex 

 iu the Pliocene beds of Florida, as "well as in the living state. 



Dimensions. — Length 15 mm.; breadth 9 mm.; length of aperture 

 and canal 8 mm. 



Form, and Loc. — Miocene : Muddy Creek, Yictoria. 



G. 4187. A large series exhibiting stages of growth. 



Presented hy John JDennant, Esq. 



G. 9467. A number of examples of the brephic and gerontic 

 stages. Purchased. 



Nassa tatei, Tenison- Woods. 



1879. Nassa tatei, Tenison-Woods, Proc. Linn. Soc. N.S.W. vol. iii. 



p. 230, pi. xxi. fig. 13. 



1880. Nassa tatei, Tenison-Woods, id. vol. iv. pi. ii. fig. 2. 



1888. Nassa {Hima) tatei, Tate, Trans. Eoy. Soc. South Anst. vol. x. 



pp. 169, 170, pi. xii. fig. 9. 

 1893. Nassa tatei, Tate and Dennant, id. vol. xvii. pt. 1, p. 219. 



This small species is extremely variable both in shape and 

 ornament, but the series examined by the writer exhibits such 

 gradual passages that no doubt exists that the divers forms all 

 belong to one species. The protoconch (Plate VI. Figs. Aa-h) 

 is turbinate, composed of four smooth, gradually increasing turns, 

 the anterior portion being faintly longitudinally striated ; the 

 shell in the brephic stage becomes strongly longitudinally costate, 

 the ribs being cut up by spiral sulci and lineations. Professor 

 Tate describes the ornament in some detail, and discusses the 

 aflBnities of the species. He finds that iV. compacta, Angas, of 

 Australian seas, is its nearest modern representative. 



Dimensions. — Length 9 mm.; breadth 4-5 mm. ; length of 

 apeitui'e 4 mm. 



Form, and Loc. — Eocene : Victoria. 



48052. Two specimens ; from Schnapper Point. Purchased. 



G. 4186. Examples of the adult; from Muddy Creek. 



Presented by John Dennant, Esq. 



G. 9470. A series showing range of variation ; from Muddy 

 Creek. Purchased. 



1 Trans. Wagner Free lust. Sci. Philad. vol. iii. 1890, p. 132. 



