100 A. H. Foord — Western Australian Fossils. 



The conical form of the glabella of 0. ? Forresti would, at first 

 sight, suggest its affinity with Ptyclioparia (= Conocephalites 1 ), but 

 the shape and position of the eye-lobes contradicts any such con- 

 clusion. From Olenellus it differs too in its conical glabella, but as 

 its characters appear on the whole to be nearer to that genus than 

 to any other, I have placed it therein. 



Locality. — " River south of base line;" Kimberley District. 



II. DEVONIAN. 



BRACKIOPODA. 



Spirifkra? Plate V. Fig. 1. 



This specimen is too imperfect to warrant any conclusion as to 



its affinities. It is a fragment, apparently of a ventral valve, with 



a deep mesial sinus and prominent beak. The shell, which has lost 



the outer layer, is quite smooth and of a silky appearance ; some 



fine radiating striae are seen near the umbo. 



Locality. — Mt. Pierre, near the Fitzroy River, Kimberley District, 

 in a coarse calcareous grit. 2 



Atrypa reticularis, Linnaeus. 

 1864. Atrypa reticularis, Davidson, British Foss. Brach., vol. iii. part vi. p. 53, 



pi. x. figs. 3, 4. 

 1877. Atrypa reticularis, de Koninck, Been, sur les Foss. Paleoz. de la Nouvelles- 



Galles du Sud (Australie), pt. ii. p. 97. 



1877. Spirigera reticularis, M'Coy, in Bep. of Progress, Geol. Surv. of Victoria, 



p. 158. 



1878. Atrypa reticularis, Etheridge, jun., Cat. Australian Fossils, p. 47. 



1880. Atrypa reticularis, Etheridge, jun., Proceedings Boyal Phys. Soc. Edinburgh, 

 vol. v. p. 312, pi. vii. fig. 2: 



This well-known and cosmopolitan species has already been found 

 on the Australian Continent, at Yass and Kempsey, New South 

 Wales, and Bindi, Victoria. Its discovery in the Kimberley District 

 indicates the presence there also of rocks of Devonian age, as it is 

 not known to occur above that horizon. The specimens, though 



immature, exhibit all the external characters of this easily recognized 

 form. One of them is figured in the accompanying Woodcut, in 

 which a represents the ventral and b the dorsal aspect of the shell. 

 At the same locality (Mount Pierre) there occur also two well- 



1 For the history of the generic names Conoccphalus, Conocoryphe, Ptychoparia 

 and Conocephalites, see Bull. United States Geol. Surv., No. 10, 1884 ; C. D. Walcott, 

 " On the Cambrian Faunas of North America," p. 34. See also Dr. H. Woodward, 

 on the same subject, in Quart. Journ. Geol. Soc. 1888, vol. xliv. p. 77, footnote. 



2 This fossil is in a precisely similar mineral condition to the other Brachiopods 

 from the same locality. 



