McCoy has pointed out another ciu-ions fact in our Aus- 

 tralian palccontology, which is, that though in our early 

 tertiary formations Ave have little specific identity with 

 European fossils, yet avc have shells in some instances so 

 closely resembling them as to be mimetic, and no more than 

 just specifically distiuct. As far as my examinations go 

 this I find to be rather the exception than the rule, and in 

 most cases I looked in vain for even a general resemblance 

 between our fossils and those which may be presumed to 

 be of the same horizon in Europe. 



The following are the new species brought to light by 

 Mr. Johnston. Note. — All dimensions in French milli- 

 metres. 



MuREX EYREi. u. s. Shell fusiforraly ovate with a rather 

 depressed spire, lamellose and spiny, last whoi'l tbree-fourlhs 

 the whole length of shell, sharply augulate rather above the 

 middle and furnished with eight thick lamellose frilled varices 

 which at the angle become projected into blunt hollow short 

 somewhat recurved spines. About the fourth from the aperture 

 the varices lose their lamellose character, and become Urate ribs, 

 still preserving the spines at the angle, above which the shell 

 slopes upwards to the suture at a slight inclination on which 

 the varices are represented by smooth lamellar raised lines ; 

 the spiral whorls, four in number, have the angle spinous, and 

 but little raised above the suture ; apex obtuse ; aperture 

 ovate ; outer lip produced at the angle and terminating an- 

 teriorly in a long straight canal ; inner lip reflected with a 

 conspicuously raised foliaceous rib, spirally sloping to the 

 siphonal aperture. Long. 48, lat. 32. Last whorl from 

 posterior margin of mouth, 34 ; length of canal, 17. 



Cassis sufflatus. n.s. Shell thin, shining, globosely in- 

 flated with simple or subplicate whorls, spire short almost acute; 

 whorls 6, 2^ apical, naticiform, three next distinctly cancellate 

 with a fine subuodose carina above ; last angulate below the 

 suture, between which and the angle there is a shallow broad 

 finely bimargined groove ; belcrsv this the shell is somewhat 

 finely and indistinctly tuberculate and ribbed, the ribs showing 

 a faiut lower band of tubercles near the middle of the whorl, 

 below this the shell is smooth or very finely striate ; aper- 

 ture auriform, outer lip reflexed, rounded, thickened and much 

 produced anteriorly ; inner, a mere enamelling above and pass- 

 ing as a thin septum over the round abruptly twisted, 

 short siphonal canal, causing a broad spiral groove like an 

 umbilicus to pass behind the labio. Long. 37, lat. 23. 

 Long, apert., 26, lat 12, mil. 



Though very distinct there is an approaxsh to the Australian 



