196 



Apollo pratti, Tenison-Woods (sp.). 



1879. Triton prattii, Tenison-Woods, Proc. Linn. Soc. N.S.AV. vol. iii. 

 p. 223, pi. xxi. fig. 15. 



1888. Randla {Argobuccinum) prattii, Tate, Trans. Koy. Soc. South Aust. 



vol. X. p. 115, pi. v\. fig. 6. 



1889. Argobuccinmn pratti, Cossmann, Ann. Geol. Univ. t. v. 1888, p. 1089. 



1893. Ranella {Argohuccitmm) prattii, Tate and Dennant, Trans. Eoy. Soc. 



South. Aust. vol. xvii. pt. 1, p. 218. 



1894. Argobuccinum pratti, Tate, Journ. Eoy. Soc. N.S.W. vol. xxvii. 



p. 172. 



This species is much flattened, varices ohliquely continuous ; 

 outer margin distantly grooved within ; columella excavated, 

 plated, twisted, granulose ; canal short and bent. Professor Tate 

 remarks, in his work of 1888 above cited, that it is related to the 

 living Ranella hihihereularis, Lamarck, of the Indo-Pacific region, 

 "from which it differs in being multicostated, and not bi- or tri- 

 tuberculated between the varices." 



Dimensions. — Length 29 mm.; breadth 18 mm.; length of 

 aperture 9 '5 mm. ; length of canal 4'5 mm. 



Form, and Loo. — Eocene: Victoria and South Australia. 



48052. Several specimens in which the longitudinal ribbings 

 are much suppressed, and the spiral lineations bolder and more 

 numerous; from Schnapper Point. Purchased. 



70417. An example of the neanic stage of growth ; from 

 Diindeuouy. Purchased. 



G. 4290. Example of the adult ; from Muddy Creek. 



Presented hy John Dennant, JEsq. 



G. 4298. Specimen of the neanic stage, with the ornament on 

 the whorls much reduced ; from Muddy Creek. 



Presented hy John Dennant, Esq. 



G. 5527. Examples of the senile stage of growth ; from Muddy 

 Creek. Purchased. 



G. 9127. Several examples in which the longitudinal ribs 

 are very conspicuous ; from River Murray cliffs, near Adelaide. 



Presented hy William Evans, Esq. 



G. 9401. Specimens of the same local variation as the pre- 

 ceding ; from liiver Murray cliffs. Purchased. 



