from Queensland. * 67 



± 3; ibid., McCoy, Annals Nat. Hist. 1847, xx. p. 226; 

 ibid., Dana, Geology U. S. Expl. Expd. p. 710, pi. 11, f. 1 ; 

 &c. &c. 



The foregoing description is partly taken from Mr. Dain- 

 tree's specimens, and partly from Mr. Lonsdale's description ; 

 the latter adds that the dissepiments are occasionally 

 celluliferous, and the rows of cells on the interstices sepa- 

 rated by slightly nexuose tuberculated ridges. These 

 characters are not displayed by the present specimens, 

 which, three in number, all possess the regular and uniform 

 habit of growth and large size, so well exhibited by 

 Prof. Morris's figure in Count Strzelecki's work. According 

 to Mr. Lonsdale, the numbers of rows of cells vary from two 

 to ten, the latter occurring on the widened portions of the 

 interstices previous to bifurcation. In the Queensland 

 specimens I have not been able to detect more than four 

 rows, usually there are three. This species was originally 

 described as a Fenestella, but the increased number of rows 

 of cells, and other minor characters, will I think necessitate 

 its removal from that genus, and place it in Prof. McCoy's 

 genus Polypora. 



Localities. — Blackfellow's Diggings, Rockhampton, Queens- 

 land {Daintree Collection). The other localities at which 

 this species has been found are Spring Hill, Mount Wel- 

 lington, and Eastern Marshes, Tasmania {Morris) ; Muree, 

 Bell's Creek, and Loder's Creek, New South Wales {McCoy) ; 

 Cllendon, New South Wales {Dana). 



Fenestella fossula (?) Lonsdale. 



Accompanying Polypora ampla are two specimens of 

 a much more finely reticulated form, preserved in a similar 

 manner as casts, but not in a sufficiently good state of 

 preservation to permit of any detailed description being 

 given ; but the general habit and mode of growth would 

 lead to the belief that they are Lonsdale's Fenestella 

 fossula. 



References. — F. fossula, Lonsdale, Darwin's Geol. Obs. 

 Vole. Lslands, 1844, p. 166 App. ; Morris, Strzelecki's Phys. 

 Descr. N. S. Wales, &c, 1845, p. 269, t. 9, f. 1 ; McCoy, 

 Annals Nat. Hist. 1847, xx. p. 226 ; Dana, Geology U. S. 

 Expl. Expd. p. 710, Atlas, t. 11, f 3. F. fossula et F. clensa, 

 Etheridge, Quar. Jour. Geol. Soc. 1872, xxviii. p. 332, 

 t. 25, £ 1. 



F 2 



