U'jyper Palneozoic and Mesozoic Fossils. 323 



Qui- specimens fi-oiii tlie Irwin River disti-ict are entirely 

 replaced by linionite, but so perfectly that the exact form of tlie 

 corallites can be seen under a slight mjignification, as well as the 

 large acantliopores, supposed to be a distinguishing feature of 

 this species. Other points worthy of notice are the cylindrical 

 and branching habit of the corallum, and the periodical external 

 thickening of the corallites. 



Locality and Horizon. — Irwin River District, Western 

 Australia. Carbo-pernnan. [1.397; 21-59.]. 



Crinoidea. 



Sevei'al pieces of crinoid stems occur in a brown .sandy matrix. 

 The colunnials are circular in section, with radially striate 

 surfaces, and having a small circular axial canal. They appear 

 to belong to the family of the Actinocrinidae, but cannot be 

 determined with certainty, as no remains of the calyx or arms 

 were met with. Crinoid stems have been recorded from the 

 Gascoyne River, Western Australia, by A. H. Foocd,^ who states 

 that F. A. Bather regards them as probably referable either to 

 the Rhodocrinidae or Actinocrinidae. 



Locality and Llorizon. — Trwin River district, Western Australia. 

 Carbo-permian. [2110.] 



Brachiopoda. 

 Depbyia {cf.) senilis, Phillips, sp. 



Spirifer senilis, Phillips, 1836. Illustr. Geol. Yorkshire, vol. 

 ii., p. 216, pi. ix., fig. 0. 



Derbyia senilis (Phill.), Etheridge Jnr., 1892 (in Eth. and 

 Jack). Geol. and Pal. Queensland, p. 246, pi. xii., tigs. 1-6. 



The only specimen in our collection from Daintree is a cast 

 in limonite of the interior of a portion of the (lorsal and ventral 

 valves. The surface of the cast clearly shows tiie punctation of 

 the shell, as innumerable tiny tul^ercles. 



Locality and LLorizon. — Irwin River District, Westei-n Aust- 

 ralia. Carbo-permian. [2111.]. 



1 Geol. Mag., vol. vii. (1890), p. 104. 



