180 



anteriorly by a small varix, beyond whicli the salient features 

 of the ornament of the adult are foreshadowed ; Tarices irregular, 

 not being in alignment from whorl to whorl, three on the body- 

 whorl, increasing in number posteriorly ; they are not foliated, but 

 rounded off, bold spiral threads passing over them, there are three 

 varices on the last whorl in the adult, increasing to four or six 

 on the preceding whorls ; whorls eight in number, subangulated 

 at the periphery, longitudinally lineate, scaly, and obscurely 

 nodose at the points of intersection with the spiral threads ; sutures 

 deep; body-whorl constricted, i^MSM«-like on the anterior half; 

 aperture ovate, open in front ; outer margin thin, curved, crenu- 

 late, lirate within; inner margin covered by a thin plate of enamel, 

 bearing three or four denticles on the forepart of the columella ; 

 canal of medium length, broad, open, nearly erect. 



The canal is rather longer than in typical examples of Muri- 

 copsis, whilst the varices are not quite as numerous ; but the 

 tubercles on the columella, the lirae within the outer margin, 

 and the partial umbilicus are characteristic. 



Dimensions. — Length 27 mm.; breadth 12"5mm. ; length of 

 aperture 8 mm. ; length of canal 7 mm. 



Form, and Loc. — Eocene : Muddy Creek, Victoria. 



6. 9454. Examples illustrating stages of growth. Purchased. 



6. 4273. An example of the senile stage. 



Presented ly John Bennant, Esq. 



Murex (Muricopsis) graniformis, nom. mut. 



1888. Murex [Ocinebra] alveolatns, Tate, Trans. Eoy. Soc. South Aust. 



vol. X. p. 108, pi. iii. fig. 12 {non J. de C. Sowerby, 1823). 



1889. Murex {Muricopsis) alveolatus, Cossmann, Ann. Geol. Univ. t. v. 



p. 1088. 

 1894. Murex [Muricopsis) alveolatus, Tate, Joum. Roy. Soc. N.S.W. vol. 

 xxvii. p. 170. 



This species resembles the young of M. irregxdaris, from 

 which it chiefly differs, according to Professor Tate, in having 

 four varices on the last whorl and seven on the preceding two 

 whorls, in the adult; the canal, also, is shorter, and the trans- 

 verse ornament is more regular and closer. The vaulted scales 



