ADDENDA. 395 



cephalic skull, the top of which has been cut off, on the basis of an 

 approximation to a natural human position of the roof of the orbits.^ 

 The features exhibited by the fragment in this position show that 

 the specimen ''does not possess characteristics identical with those of 

 recent human crania; its distinctive features are not even within the 

 limits of the variation of recent man." 



As a result of his observations, it seems to Sergi ''that the Dipro- 

 thomo may belong to the human family, to the Hominidse, but it sepa- 

 rates itself absolutely by many above-described characters from the 

 living type of man. These characters do not constitute a type that 

 would ordinarily be denominated as inferior; it is a type of its own, a 

 type which is related with the hitherto known fossil human forms in 

 Europe. . . . For my part," Sergi concludes, " I shall continue to 

 denominate the Diprothomo as I have done in dealing with the descent 

 of man, najiiely, Proanthropus." 



Sergi entertains "no doubt regarding the antiquity of the fragment " 

 and its age, in his opinion, is confirmed by its morphology. 



Finally, still another reply to the criticisms of Mochi is published 

 by Ameghino.- It is not possible to enter into the details of this 

 extended paper. It relates almost exclusively to the various speci- 

 mens representing the Homo pampxus, H. caputinclinatus , and H. 

 sinemento. No new data concerning the circumstances of the several 

 finds are brought forth, the discussion dealing with the morphologic 

 characters of the skulls. Professor Ameghino acknowledges some 

 errors in his former statements in regard to certain particulars, but 

 retains and reasserts all his main views and beliefs. There are evident 

 some incipient modifications or rather developments in these, but 

 they do not lead in the direction of Mochi's opinions. 



The above-mentioned publications contain nothing that neces- 

 sitates any alteration of or addition to the writer's statements and 

 conclusions recorded in the several sections of this report. 



1 A feature which presents considerable individual variations in all races, and hence can easilj^ lead to 

 error in such procedure as that adopted by Sergi. Only the mean inclination of these parts in different 

 groups of man may be alike. — A. II. 



2 Ameghino, F., Observations au sujet des notes du Dr. Mochi sur la paleoanthropologie Argentine; in 

 AtuiI. Mus. Nac. Buenos Aires, xxn (ser. iii, t. xv), 1911, pp. 181-230. 



