Clarke — Geology of Western Australia. 503 



M. D'Omalins D'Halloy's account of the Geology of Belgium 

 appended to his work^ " Abrege de Geologie," contains the follow- 

 ing notice of the above formation : — 



" Le Lambeau entre Spa et Francorchamps a cela de remarquable 

 qu' il se trouve a une altitude de pres de 600 metres, tandis que les 

 autres depots cretaces de la Belgique n' atteignent pas 300 metres. 

 Ou ne I'a connu pendant longtemps que par des silex jaunatres epars 

 sur le sol et dans lesquels M. Dareux avait observe 1' EcJiinocoris 

 vulgaris, mais M. Malaise vient d' y decouvrir une petite couche de 

 craie blanche contenant la Belemnitella mucronata." 



In addition to the above-mentioned fossils, I found in a few hours 

 nineteen distinct genera and species of testacea and echinodermata : 



Pecten quinquecostatus, and two other species ; Terebratula ; two 

 species of Bhynchonella ; two species of Echinoderms, etc., etc. The 

 great variety of these, contained in so small a space, seems a strong 

 argument in favour of transport from another area of considerably 

 greater extent. 



n^OTiCES oip Dv^El^/coII^s 



I. — Fossil Medusa. 



PEOFESSOE H^CKEL, of Jena, who, in 1865, caUed attention 

 to the existence of well-preserved Medusce in the lithographic 

 slates of Eichstadt, belonging to the families JEquoridts and 

 Trachynemidcs, has recently published^ a notice of two other species 

 of Medusce so well preserved, that the family to which they belong 

 can be ascertained without doubt, They are from the same locality, 

 and belong to the Discophorce, and to the family Bhizostemidce. The 

 restoration which Professor Haeckel has been able to make from the 

 specimens in his possession, is quite satisfactory, and the attention 

 of geologists having been called to this subject, we may expect 

 further interesting researches into the ancient history of Acaleplm, 

 since it is well known that even at the present time a kind of petri- 

 faction of jelly-fishes, when thrown upon sandy beaches, readily 

 takes place. A. A. 



II. — Notes on the Geology op Western Australia. 

 By the Eev. W. B. Clarke, M.A., F.G.S., etc. 



THE following is one of a series of papers, contributed by Mr. 

 Clarke to the Government of Western Austi-alia, on the 

 geology of the country east of the settled districts. It was com- 

 municated by the Colonial Secretary to the "Perth Gazette and 

 Western Australia Times," and is now reprinted as containing the 



^ "Abrege de Geologie," p. 534. 

 ■2 Leonhard und Geiuitz's Neus Jahi-buch, 1866, Heft 3, p. 257. 



