340 CALIFORNIA ACADEMY OF SCIENCES. [Proc. 3D Ser. 



3. Oriental region, W. Waagen (38) for the Salt Range 

 province; C. Diener (4) for the Himalayan province. 



4. American region, W. M. Gabb, in the Geological 

 Survey of California (9), in which a few species from the 

 Middle Trias of the Humboldt Mountains of Nevada are 

 described; F. B. Meek (18) for the same province, based 

 on a much more complete collection of fossils. 



The Upper Trias. 



E. von Mojsisovics divides the Upper Trias into two 

 series, the Tirolic and the Bajuvaric; but there seems to 

 be little use in thus subdividing the old group, Keuper, 

 which ought to stand on the same basis as the Muschelkalk 

 as a unit in comparative stratigraphy. 



The Tirolic Series. The Tirolic series has been divided 

 into two stages, the Ladinic (or Noric according to Mojsis- 

 ovics) and the Karnic. The lower part of the Ladinic, 

 or the Fassanic substage, has recently been shown to 

 belong to the Muschelkalk. The upper Ladinic, or Longo- 

 bardic substage, unquestionably belongs to the Upper 

 Trias. This is represented in the Mediterranean region 

 by the Wengen beds. A part of the Rikusen beds of 

 Japan may belong here, as also the upper part of the Star 

 Peak limestone of the Humboldt Mountains of Nevada. 

 The Triassic beds of western Canada have been referred 

 to this horizon with somewhat more probability. Marine 

 faunas of Longobardic age are also known in the middle 

 Daonella beds of the Oriental region. 



The Cordevolic substage of the Karnic, equivalent to 

 the Alpine St. Cassian formation, has been cited from 

 Nevada and California, but it is doubtful if it is represented 

 there. It is certain that the faunas of the West Humboldt 

 Range in Nevada do not belong to the St. Cassian forma- 

 tion, while the beds below the Halobia slates in Shasta 

 County, California, may. But in the Californian section 

 the Julie and Tuvalic substages of the Karnic are well 

 represented, with a rich fauna of Trachycerata and Tropit- 



