35 



Protoconch (Plate IT. Figs. 9a-h) conical, moderately elevated 

 and composed of two smooth turns, somewhat similar to that of 

 C. heterospira. In the brephic stage, and, possibly, to the 

 commencement of the neanic, the whorls of the spire are coronate, 

 but as the adult form is reached these disappear and the shoulders 

 become rounded. Mr. Tenison-Woods was only acquainted, ap- 

 parently, with young forms of the species, and the figure in his 

 memoir cited above does not convey a correct idea of the shell, as 

 each whorl is represented as being carinate and nodosely crenulated. 

 Professor Tate has traced the young forms to the adult and firmly 

 established the species. The spire is elevated, composed of eight 

 whorls striated spirally above. The body-whorl is also spirally 

 striated, the striae being most conspicuous on the anterior half. 

 Aperture narrow, posterior sinus shallow and following growth- 

 lines ; columella slightly twisted anteriorly. 



Dimensions — Length 43 mm. ; breadth 23 mm. 



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



G. 5492. One specimen. Purchased. 



G. 4241. One specimen. Presented hj John Dennant, Esq. 



Conus (Chelyconus) catus, Hwass. 



1792. Conus catiis, Hwass, Eney. Meth. (Vers) t. i. pt. 2, p. 707. 



Shell bulbous, spire convex, striated above ; body-whorl finely 

 striated on the posterior half, and having deep spiral sulcations 

 anteriorly. Aperture narrow, but widening in front and some- 

 what dilated ; posterior sinus conspicuous ; columella twisted 

 anteriorly where a well-marked ridge or fold is produced. 



The species differs from the earlier C. raJphi, with which it 

 is closely related, in being much broader anteriorly and by the 

 prominent coluraellar fold. The specimens in the Museum are 

 not well enough preserved to show the protoconch or the condition 

 of the shell in the brephic stage. 



This species has living representatives over a large geographical 

 area, including the Red Sea, Mauritius, Java, China, Xew Cale- 

 donia, and Polynesia generally, and it is interesting to find it as 

 a fossil. 



Dimensions. — Length 44 mm. ; breadth 24 ram. 



