306 Mr. F. M'Coy on the Fossil Botany and Zoology 



Pleurotomaria Strzeleckiana (Mor.). 

 Common in the fine calcareous grits of Wollongong, N. S. 

 Wales. 



Pleurotomaria Morrisiana (M'Coy). PI. XVII. fig. 5. 

 Sp. Char. Acutely conical, width four-fifths of the length ; volu- 

 tions four or five, each having a small double keel below the 

 middle, and a slightly tumid margin to the sutures ; no umbi- 

 licus ; surface with fine close unequal striae arched backwards 

 from the suture to the keel. Width 4 lines, length scarcely 

 5 lines. 



As the characters of this little species seem to have been already 

 recognized and slightly alluded to by my friend Mr. Morris (in 

 Count Strzelecki's work), I dedicate it to him. It is, as he ob- 

 serves, something like the P. conica (Phil.), but smaller and more 

 elongate. 



Abounds in some parts of the limestone of Black Head, N. S. 

 Wales, and rare in the sandstone of Muree, N. S.Wales. 



Platyschisma rotundatum (Mor.). 

 Abundant in the dark arenaceous limestone of Harper's Hill, 

 N. S. Wales. 



Platyschisma oculus (Mor.). 

 Common in the arenaceous limestone of Harper's Hill. 



(Pteropoda.) 

 Theca lanceolata (Mor.). 

 Abundant in the dark arenaceous limestone of Black Head, 

 N. S. Wales. I observe that, at the longitudinal furrows, the ends 

 of the transverse sulci alternate with each other as in Conularia. 

 Those longitudinal furrows are not noticed by Mr. Morris in his 

 description of the genus and above-named species ; but they exist, 

 of the same number as in Conularia, one coinciding with the 

 principal (? dorsal) ridge, two being placed a little on the (? pos- 

 terior) side of the lateral angles, and one in the middle of the flat 

 (? anterior) side. It is of importance to notice those obscurely 

 marked furrows, as bringing more clearly to view the relations 

 of the genus Theca with Conularia. The transverse sulci are 

 crossed by very minute longitudinal striae. 



Conularia Icevigata (Mor.). 

 Common in the fine gray micaceous sandstone of Black Creek, 

 N. S. Wales, and in the limestone of Harper's Hill, N. S. Wales. 



Conularia torta (M'Coy). PI. XVII. figs. 9 & 10. 

 Very elongate-conic, diminishing in diameter at the rate of 

 one line in two inches ; section oval ; lateral longitudinal chan- 



