186 On the Genus Stenopora, Lonsdale. 



thick ; cells sub-elliptical and having the border a little promi- 

 nent. Columns of the size in the ovata (about six to a line in 

 breadth), even, with few constrictions." (Dana.) 



Obs. We have never been able to satisfactorily detect this 

 species in any collection of Australian Stenoporce yet examined 

 by us. It appears, however, to be distinguished by the 

 remarkable paucity of annular thickenings and constrictions, 

 or, at times, their total absence. This feature has led us to 

 even doubt if it be a Stenojjora, although in general habit it 

 bears a strong resemblance to the other previously-cited 

 species. 



Furmalion ami Localitij. Carboniferous ?, WoUongong 

 Point and Black Head, Illawarra, New South Wales [Dana). 



Stenopora ? sp. 



Stenopora ? s]y., Nicli, & Eth.,-Jun., Anu. & Mag. Nat. Hist. 1879, 

 vol. iv. p. 276. 



Obs. In our paper on the " Paleozoic Corals of Northern 

 Queensland " we drew attention to what may prove to be 

 another species of Stenopora. For further information we 

 refer to our previous description, simply remarking that we 

 are not at present in a position to offer additional particulars. 



Formation and Locality/. Carboniferous, Gympie, North 

 Queensland. {Coll. Brit. Mus. and Geol. Survey, Qaeeusland.) 



EXPLANATION OF THE PLATES. 

 Plate III. 



Fig. 1. Tangential section of the Strzeleckiau type-specimen o( Stenopora 

 ovata, Lonsd., enlarged about twenty-four times. 



Fig. 2. Longitudinal section of the same specimen, similarly enlarged. 

 p, supposed mural pore. 



Fig. 3. Tangential section of another specimen of Stenopora ovata, Lonsd. 

 (from the Milligan collection), enlarged about twenty-four 

 times. 



Fig. 4. Vertical section of the same, similarly enlarged. 



Fig. 5. Tangential section of Stenopora australis, Nich. & Eth., Jun., en- 

 larged about twenty-four times. 



Fig. 6. Vertical section of the same, similarly enlarged. 



Fig. 7. Tangential section of Stenopora Leichhardtii, Nich. & Eth., Jun., 

 enlarged about twenty-four times. 



Fig. 8. Vertical section of the same, similarly enlarged. 



Fig. i>. Tangential section of Stenopora tasmaniensis, Lonsd., enlarged 

 about tweutv-four times. 



Fig. 10. Longitudinal section of a few of the tubes of the same, similarly 

 enlarged. The section is taken from the outer part of a trans- 

 verse slice. 



Fig. 11. Mouths of some of the corallites of S. tasmaniensis, Lonsd., 



