4 BULLETIN 186, UNITED STATES NATIONAL MUSEUM 



In 1913 he sent to the Provinzial-Museum (now the Landesmuseum) 

 at Hannover a sizable collection; this material was handed over to 

 Gyldenstolpe for identification, but no list seems ever to have been 

 published. In 1939 I examined 266 specimens in Hannover, all of 

 which probably came from the North ; among them were 6 presented 

 by the Munich museum (perhaps the entire lot sent there by Eisen- 

 hofer) and 15 from "Siam" (3 with the dates December 12, 17, and 

 24, 1912) accredited to Briecke, who was probably an associate of 

 Eisenhofer. The latter continued to collect sporadically, in the 

 North until June 1913, and later in southwestern Thailand; his 

 ornithological career came to an end in 1917 as a result of the Thai 

 declaration of war upon Germany. Gyldenstolpe, during his expe- 

 dition of 1914-15, published a briefly annotated list of Eisenhofer's 

 northern specimens, as of that date, in the Journal of the Natural 

 History Society of Siam, vol. 1, 1915, pp. 163-172, 229-236. Some 

 years later Eisenhofer "presented his private collection of 1450 birds 

 to the [Eoyal Natural History] Museum [at Stockholm], but because 

 he was a German citizen the collection was sequestered by the Siamese 

 authorities, and the Museum in 1920, had to pay a comparatively 

 high price to redeem its own property" (cf. Lonnberg, Auk, 1926, 

 p. 444) . 



A study of the labels of Eisenhofer's specimens, both in Stockholm 

 and in Hannover, shows his northern collecting localities and dates to 

 have been as follows : 



February 7, 1912, Ban Huai Horn. 



February 8, 1912, Ban Huai Horn, Den Chai. 



February 9, 1912, Den Chai. 



February 10, 1912, Den Chai, Mae Phuak. 



February 11-13, 1912, Ban Huai Horn. 



February 14, 1912, Den Chai. 



February 16-20, 1912, Pak Pan. 



February 22-24, 1912, Ban Huai Horn. 



April 20-22, 1912, Pang Puai. 



April 23-30, 1912, Pha Hing. 



May 1-12, 1912, Pha Hing. 



May 20-31, 1912, Huai Pu. 



June 2-5, 1912, Huai Pu. 



June 23-27, 1912, Huai San. 



May 25, 1913, Khun Tan. 



June 1-11, 1913, Khun Tan. 



(Sir) Walter James Franklin Williamson (1867 — ), al- 

 though he never made a personal visit to the North, sent an Asiatic col- 

 lector of birds to these provinces in at least two different years. No 

 complete report on Sir Walter's large Thai collection has yet been 

 published, but a few of his more unusual northern specimens have 

 been noticed in the Journal of the Natural History Society of Siam. 



