1867.1 323 [Hagen. 



Negroes than in tlie other races, and therefore in tliis respect 

 the former were nearer the apes. It appears, however, that 

 Soemmering's statement is incorrect. The races mentioned 

 above, arranged according to the position of the opening 

 referred to, woukl stand in the following order: Whites, 

 Negroes, Hawaiians, Ilindoos, North American Indians; 

 tliese htst, in this one anatomical peculiarity, being the most 

 ape-like. 



The Corresponding Secretary read a list of letters received 

 since the last annomicement ; among them one from Mr. W. 

 H. Dal), announcing his intention of remaining in Alaska to 

 continue his explorations, and giving some account of the 

 scientific work of the Telegraph Company during the past 

 year. 



The Custodian announced the donation by Mrs. Bryant 

 of the large and valuable series of the nests and eggs of 

 American birds collected by the late Dr. Bryant. 



Section of Entomology. November 27, 1867. 

 Mr. P. S. Sprague in the chair. Nine members present. 



The following paper was read by Dr. Herrmann Hagen: — 



I beg leave to present this communication of a very interesting fact in 

 the Biology of Insects'. It relates to the mode of locomotion in Cheli- 

 fer and other Pseiidoscorpions. I am indebted to Mr. Lyman for the 

 accompanying specimen of a Fly with two Chelifers strongly attached 

 to his legs. Although the discovery is not very new, I think it is little 

 known. I have found in Entomological Literature the following re- 

 marks upon the same subject. 



Hermann (Memoire apterologi(|ue, Strasbourg, 1804, p. 117) has 

 found one Chellfer attached to the leg of a Fly, whence he has named 

 it Chelifer jmrasi/a, but Latreille thinks that it is the same species as 

 Chelifer cimicoides. 



Leach (Zoological Miscellany, 1817,) has also seen the Chelifers at- 

 tached to flies. 



