Geology. 97 



was poised on an upright trunk. The palate is large, but typi- 

 cally human, and adapted to perfect speech. It is remarkable 

 that the teeth are much affected by caries. The lower jaw must 

 have been massive and larger than the Heidelberg jaw. The 

 appearance of flatness of the frontal area suggests a comparison 

 with Pithecanthropus erect us. Dr. Smith Woodward was 

 inclined to find the nearest approach to the Rhodesian skull in 

 the Neanderthal type from La Chapelle aux Saints in France. 

 Though markedly modern in regard to the brain-case, in its facial 

 characters, while it is essentially human, it appears to hold a 

 position between the gorilla and the Neanderthal man. Frag- 

 ments of the long bones, both femur and tibia, which have been 

 found indicate that, unlike Neanderthal man, Rhodesian man 

 walked in a perfectly upright posture. Dr. Smith Woodward 

 regarded Rhodesian man as possibly a later development than 

 Neanderthal man, but Prof. Elliot Smith suggested that he might 

 represent a primitive type of which Neanderthal man might be 

 a highly specialised form. 



2. A new Generic Name for Pliocyon Marshi; by M. R. 

 Thorpe (Communicated). — At the time of the publication of my 

 paper on "Two new Carnivora" (this Journal (5), 1, June, 

 1921), I was not aware of the fact that the generic name Pliocyon 

 was preoccupied. Since such was the case, I now propose the 

 name Arwocyon (apatos, slender) to supplant my Pliocyon, and 

 the type of the genus will therefore be Arceocyon marshi. 



In April, 1918, W. D. Matthew described a new genus of dogs 

 under the name of Pliocyon. The type of this genus was col- 

 lected in the Snake Creek beds (Lower Pliocene) of western 

 Nebraska, and represents a genus totally distinct from Ar&ocyon, 

 which is from the Rattlesnake beds (Middle Pliocene) of Oregon. 



3. Publications of the United States Geological Survey, 

 George Otis Smith, director. — The well-understood difficulties 

 connected with the printing industry the past year have made it 

 impracticable to present promptly and in full the publications of 

 the U. S. Geological Survey as has been the custom in this Jour- 

 nal (see earlier, 50, 469-70) . The most important issues received 

 are the following : 



Topographic Atlas : Fifty-one sheets. 



Geologic Folios : No. 211, Elkton- Wilmington Folio ; by 

 F. Bascom and B. L. Miller. No. 212, Syracuse-Lakin Folio; 

 by N. H. Darton. 



Professional Papers: No. 121, Helium-bearing natural gas; 

 by G. S. Rogers. No. 128, Part E. No. 129. Parts A, B. 



Forty-first Annual Report of the Director for the year ending 

 June 30, 1920. 



Bulletins: — No. 679, Microscopic determination of non- 

 opaque minerals; by E. S. Larsen. No. 682, Marble resources 

 of southeastern Alaska ; by E. F. Burchard and T. Chapin. No. 



Am. Jour. Sci. — Fifth Series, Vol. Ill, No. 13. — January, 1922. 



7 



