148 Scientific Intelligence. 



3. Beitrtige zur Geologie unci JPalaeontologie von Ostasien, 

 etc.; by Th. Lorenz. Zeitschr. d. Deutsch. Geol. Ges., 1906, 

 pp. 53-108, pis. iv-vi. — The author describes the fossils collected 

 by him in Schantung, China, essentially Cambrian trilobites. 

 The new genera are Lioparia, Trachyostraeus, Macrotoxus, 

 AloJcistocare, Jfegalophlhalmus, Amphoton, Chondropuria, 

 Schantungia, and another said to be an Ordovician gastropod 

 JPolyclesmia. 



The author complains much about the poorly defined trilobite 

 genera and then attempts to place some of them on a better foot- 

 ing. As he nowhere deals with entire trilobites and in most cases 

 does not consider the pygidia, one easily becomes very skeptical 

 about his revision. This is further accentuated by noting that in 

 addition he fails to follow the rules of nomenclature and undoubt- 

 edly has made an admittedly difficult subject still harder for sub- 

 sequent workers to unravel. His primary basis for classification 

 he states as follows : " I have attempted to set up a system in 

 which the different forms can be easily classified As prin- 

 ciples for distinctions I have adopted the size and position of the 

 eyes, the presence or absence of a dorsal furrow [deep groove 

 surrounding glabella], or the direction of the facial suture. . . . 

 There are porous and non-porous shells. . . . These two types of 

 shell structure — non-porous and porous — are constantly asso- 

 ciated without transitional forms." 



On the basis of shell structure he erects two groups — " Stem 

 Stereokelipha " having a compact shell with various types of sur- 

 face granulation, and " Stem Porokelipha " having a finely porous 

 shell. c. s. 



4. Guide to the Geology and Paleontology of the Schoharie 

 Valley in Eastern New York • by Amadeus W. Grabau. Bull. 

 92, N. Y. State Museum, pp. 76-386, plates, many text-figures, 

 and map in pocket. — Schoharie valley has long been famous as a 

 locality in which nearly the entire Devonian strata can be studied, 

 but more particularly the Lower Devonian. The section in its 

 entirety, however, extends from the Upper Ordovician well into 

 the Upper Devonian. With the State Geologist we are in agree- 

 ment in stating that the book "will aid and stimulate students, 

 clarify the geologic problems which the region presents and, as it 

 is the outcome of a careful resurvey of the region, advance our 

 knowledge." 



Chapters 1-4 take up the various formations in detail, with 

 illustrations of the more typical fossils found in each. In chap- 

 ter 5 the characteristic sections in the Schoharie region are 

 described and the fossils listed. Many other sections of the 

 Helderberg mountains and elsewhere are added for comparison. 

 Chapter 8 treats of the Physiography of the Schoharie region in 

 its relation to man. c. s. 



5. Cephalopoda of the Beekmantoion and Chazy Formations 

 of the Champlain Basin ; by Rudolf Ruedemann. Bull. 90, 

 N. Y. State Museum, pp. 393-604, pis. 1-38. — As the title indi- 



