PALÉOZOOLOGIE ET PALÉOPHYTOLOGIE 53 



is similar to Cope's American Belodon buceros. For the latter genus Jaekel 

 proposed the use of Metarhinus, a name proposed for a mammalian genus 

 some time before by Osborn. Following Jaekel, the writer considers the 

 American form generically distinct and proposes the name Machœroprosopus 

 of which the large skull, a new species, M. validus, is the geno type. 



Some doubtful relations between the bones at the base of the skull are 

 determined from other material referred to in this genus. A long, slender jaw, 

 referred to the genus Angislorhinus, is figured and described. 



In the type of M. validus the nares are conspicuously elevated above the 

 cranium proper, a condition that leads the writer to conclude that thèse 

 Phytosaurs lay concealed in shallow water tille the prey, the varions land 

 forms, came down to drink and virtually walked into the jaws of the captor. 



E. B. Branson. 



Mehl, M. G., The Use of Outline Gharts in Teaching Vertebrate 

 Paleontology. Bull. Scientific Laboratories Denison Univ., vol. XIX, 

 pp. 47-53, 1 fig., 4 pi. June 1919. 



Because of the scarcity of materials for illustrating the chief types of 

 extinct vertebrates in ail but a few of the larger educational institutions, 

 the writer has developed outline charts of the skull ; superior, inferior, and 

 posterior views ; the limbs, front and hind ; and the vertebrœ, side and 

 end views. Thèse outlines show the relations of the parts in generalized 

 primitive forms and by using or discarding certains lines the corresponding 

 anatomy of any more specialized form may be represented. 



The charts are best adapted to Amphibian and Reptilian anatomy. 

 It is thought that the use of them will not only supply the student with 

 a vast collection of « paper bones », but that they will turn his attention to 

 relation of parts rather than to size and shape in the study of comparative 

 osteology. 



E. B. Branson. 



Branson, E. B., The Devonian fishes of Missouri. Bull. Univ. of Mo., 

 vol. 15, no 31 — November 1914 — Sciences séries, vol. 2, n» 4. 74 pp., 

 4 plates. 



In black shales which occur in northeastern Missouri remains of several 

 species of dinichthyid fishes hâve been collected by Mr. R. R. Rowley. 

 Associated with the dinichthyids are two species of Ptyctodus, two species 

 of dipnoans, and six species of sharks. The paper discusses briefly the strati- 

 graphy of the Devonian in Missouri, and describes Dinichthys Bowleyi, Dinich- 

 thys missouriensis, Mylostoma Eastmani, Helodus Bowleyi, Helodus devonicus, 

 Helodus incipiens, Helodus clivulus, and Eoorodus iypus. 



Auihor's abslracl. 



Cockerell, T. D. A., Some fossil Fish scales from Peru. Proc. U. S. Nat. 

 Mus., vol. LIX, pp. 19-20, fig. 1-7 texte. Washington, 1921. 



Les matériaux de cette courte Note ont été recueillis, par MM. Heald et 

 Mather, à 70 milles environ au Nord de Callao. Toutes les écailles examinées 



