A. H. Foord — Western Australian Fossils. 103 



6, 60), and CyperitesAike leaf- fragments (Figs. 7, 7a), with many 

 examples of their separated basal extremities " (Figs. 8, 8a). 



Mr. William Carruthers, F.R.S., had suggested to Dr. Woodward 

 that these thick triangular basal extremities of leaves, which are 

 very abundant on some pieces of shale, might perhaps be broken-up 

 fragments of bracts of cones of Lepidostrobi. 



Localities. — All the specimens are from Yarralla Hill, near the 

 mouth of the May River (King Sound), with the exception of the 

 fragments of fern-rachis, which were collected at Forrest Hill. 



BRACHIOPODA. 



Chonetes ? sp. Plate V. Fig. 6. 



The ventral valve of a young (?) individual, separated from the 

 matrix, the external surface minutely pitted, the interior showing 

 muscular impressions. A row of five or six perforations on each 

 side of the beak indicate that there were spines along the hinge-line, 

 though they are not preserved. 



Locality. — " Opposite Mt. Krauss," King Leopold Ranges, near 

 the Fitzroy River, Kiinberley District. 



Strophalosia Clarkei, Etheridge, sp. PL V. Figs. 7, 7a, 8. 

 1872. Productus Clarkei, Etheridge, Quart. Journ. Geol. Sec. vol. xxviii. p. 334, 

 pi. xvii. figs. 2, 2a, 2b. 



1877. Product us Clarkei, de Koninck, Fossiles Paleozoiques de la Nouvelles Galles- 



du Sud, pt. iii. p. 203, pi. x fig. 5, pi. xi. fig. 3. 



1878. Productus Clarkei, Etheridge, jun., Cat. Australian Foss. p. 51. 



1880. Strophalosia Clarkei, Etheridge, jun., 1'roc. Roy. Phys. Soc. Edinburgh, 

 vol. v. p. 28P, pi. ix. figs. 18—21, pi. x. figs. 22—28, pi. xi. figs. 29— 

 31, pi. xii. figs. 32, 33. 



Several detached dorsal valves (Figs. 7, 7a) occur in the Collection, 

 showing beautifully perfect interiors. These I have but little 

 hesitation in identifying with the above species, which has been 

 very amply figured and described by my friend Mr. R. Etheridge, 

 jun., though from very poor material. In the same matrix and 

 from the same locality there are some convex valves (Fig. 8), which 

 may possibly be the ventrals of the present species ; but the outer 

 shell being entirely absent, I am unable to offer a decided opinion 

 about these fossils. The inner layer of the shell remaining upon 

 them has a silky appearance and is finely punctate. 



Locality. — " South-east of Mt. Abbott," on the Fitzroy River, 

 Kimbeiiey District, in a yellowish ferruginous sandstone. 



LAMELLLBRANCRLATA. 



Avictjlopecten tenuicollis, Dana, sp. PI. V. Fig. 9. 



1847. Pecten tenuicollis, Dana, Amer. Journ. Sci., second series, vol. iv. p 160. 

 1854. Pecten tenuicollis, Dana, in Wilkes's Expl. Exped. 1838-42 (published 1849- 



1854), vol. x. Geology, p. 705, Atlas, pi. ix. tig. 7. 

 1878. Aviculo pecten tenuicollis, R. Etheridge, jun., Cat. Australian Fossils, p. 67. 

 1889. Aviculopecten tenuicollis, R. Etheridge, jun., Proceed. Linnean Soc. New 



South Wales, 2nd series, vol. iv. pt. ii. p. 203. 



" Suborbicular, 24-costate, costas very slender, subacute, smooth. 

 Sulci shallow, nearly flat at bottom, and having an intermediate 

 smaller costa. Ears moderately large. Cardinal margin straight. 



