Geology and Mineralogy. 329 



" 5. Through the stratigraphic correspondence of the Red beds 

 and associated formations in the Rocky Mountain and Plateau 

 provinces and the evidence of the Triassic vertebrate fauna at 

 numerous points, certain correlations are more or less clearly- 

 indicated. 



" a. 'The Hermosa formation appears to occupy the same 

 stratigraphic position as the Aubrey of Utah and Arizona. 

 Further investigations are necessary, however, to explain certain 

 faunal differences or dissimilarities noted by paleontologists 

 between the formations. 



" b. The Cutler formation, being older than the Ouray uncon- 

 formity, is probably of Paleozoic age and corresponds more or 

 less closely to the Permian portions of the stratigraphic sections 

 of the Plateau and Mississippi Valley provinces. 



"c. The Dolores formation includes diminished equivalents of 

 the Shinarump and Vermilion Cliff formations of the Plateau. 

 The Shinarump may include important divisions not represented 

 in the Dolores. 



" d. The La Plata formation is seemingly equivalent to the 

 White Cliff sandstone. Its local assumption of red color has led 

 to confusion with the Vermilion Cliff in certain districts and a 

 reference to the Trias. Since the White Cliff sandstone under- 

 lies marine Jurassic beds, and the La Plata transgresses the 

 Dolores and all older beds in marked unconformity, the Jurassic 

 age of the lower division of the Gunnison group seems estab- 

 lished. 



" e. The McElmo formation appeal's to correspond closely to 

 the Morrison and Como beds and. the Flaming Gorge group of 

 Powell. It is probable that the marine Jurassic horizon belongs 

 between the La Plata and McElmo formations." c. s. 



2. Annates de Paleontologie / published under the direction 

 of Marcellin Boule, Professor of Paleontology at the National 

 Museum of Natural History. Paris (Masson and Co.). Vol. I, 

 Pts. I and II, Jan., 1906. — This new serial in quarto form is to 

 appear four times a year, and will have at least 20 signatures and 

 20 plates. The price outside of Paris is 30 francs a year. The 

 illustrations are heliotypes made directly from the fossils, while 

 interpretations and explanatory drawings are to appear in the 

 text. Each paper is independently paged, so that works of the 

 same nature may be bound together or each may be bound sepa- 

 rately ; a second pagination appears at the bottom of each page, 

 which is that of the annual volume. The contents of the first 

 part are as follows : 



Fossiles de Patagonie. Les attitudes de quelques animaux y 

 par M. Albert Gaudry. Pp. 1-42. 



Paleontologie de Madagascar. I. Fossiles de la cote orientals ; 

 par Marcellin Boule et Armand Thevenin, avec la collaboration 

 de J. Lambert. Pp. 1-17, pis. 1, 2. Describes Upper Cretaceous 

 invertebrates. A new genus of echinoid was described as Noet- 

 lingia by Lambert, in 1898, and the name is used here, but 



