156 Scientific Intelligence. 



senting a calcareous facies of the Coblenzian and parallel to the 

 F, G, H fauna, but, in 1884, he appears to have resumed his 

 original position in regard to the age of the Hercynian, modify- 

 ing his conception of the parallelism of the Bohemian fauna by 

 removing from his equivalent the lower portion of F. Novak 

 (1886) shows that the fauna of F was not divisible except into 

 different facies. Freeh (1886) made the Bohemian representative 

 of the Devonian series the top of the middle division, and F the 

 equivalent of the Hercynian, as lowest Devonian ; in 1887 he 

 placed the base of the Bohemian Devonian at E (Hercynian). 

 Barrois (1889) made the Hercynian, with Beyrich and Kayser 

 (1878, not 1880), a lowest Devonian fauna, but differed from 

 Kayser (1878, 1880) in regarding it, not as a calcareous facies of 

 the Coblenzian, but as such a facies of the older Gedennian, con- 

 sidering the Bohemian stage G as its eqivalent. 



Professor Clarke next discusses the equivalent rocks of North 

 America or the Lower Helderberg, Oriskany and Upper Helder 

 berg, and argues that the fauna of the Lower Helderberg is more 

 closely related to that of the Devonian Oriskany fauna than to the 

 Niagara. In conclusion he says : " What has been here written 

 is intended to be only suggested, and the inquiries to which it 

 should give rise are : 



" (a) Is the normal Lower Helderberg fauna, by virtue of predom- 

 inant Devonian characters, to be referred to the Devonian system ? 



" (b) Is it the American equivalent of the European Hercynian, 

 i. e. an. earliest Devonian calcareous pelagic fauna? 



" (c) Is it the pelagic fauna, of which the Oriskany Sandstone 

 includes the arenaceous facies?" 



This suggestion comes to me with peculiar force at the present 

 time, and, if the Silurian system was to be re-classified to-day, I 

 should favor the following scheme : lower division, Canadian, Cal- 

 ciferous and Chazy; middle division, Trenton and Hudson, and 

 upper division, Niagara and Salina. The summit of the Silurian 

 would be drawn at the Waterlime formation, and the Lower 

 Helderber£ would be considered, with the Oriskany sandstone, 

 as lowest Devonian. This, to my mind, is the more natural class- 

 ification, and divides the Paleozoic into four subequal groups — 

 Cambrian, Silurian, Devonian, and Carboniferous. c. d. w. 



2. JRadaliosaurus priscus Credner, a neio Reptile from the 

 Lower Permian of ISaxony ; by Dr. G. Baur. — Only a few 

 months ago Professor H. Credner described a very important 

 Reptile from the Permian of Saxony, which he called Palceo hatter ia 

 longicaudata* To-day I have received through the kindness of 

 Professor Credner another paper,f which deals with a new reptile 

 from the same locality entirely different from Palmohatteria. It 

 is called Kadaliosaurus priscus. 



When the animal was discovered by the quarrymen it was 

 complete, but in taking it out it was partially destroyed. In this 



*Zeitschr. deutsch. geol. Ges., 1888. This Journal, April, 1889. 

 f Zeitschr. deutsch. geol. Ges., 1889, pp. 319-342, pi. xv. 



