TYPE SPECIMENS OF BIRDS 31 



Genus PLEGADIS Kaup 



I [bis], thalassinus Ridgway 



American Naturalist 8: 110, February 1874. 

 =Plegadis guarauna (Linnaeus). See Baird, Brewer, and Ridgway, 

 Water birds of North America 1 (Mem. Mus. Conip. Zool. 12) : 98, 1884. 

 53670 (=84604). Immature male. Oreana, on the Humboldt River, 

 Pershing County, Nevada. September 3, 1867. Collected by Robert 

 Ridgway. Original number 159. U.S. Geological Exploration of the 

 40th Parallel. 

 53671. Immature female. Camp No. 17, Humboldt Valley=Oreana, on 

 the Humboldt River, Pershing County, Nevada {fide Ridgway, loc. cit., 

 footnote) . September 3, 1867. Collected by Robert Ridgway. Orig- 

 inal number 160. U.S. Geological Exploration of the 40th Parallel. 

 The third cotype. No. 53672, a female, was destroyed in October 1881. 

 No. 53670 left the museum and entered Ridgway's private collection as 

 his No. 170; at this time, in accordance with his custom, all older labels 

 were removed and the data were transcribed onto one of his private labels 

 (which is now its only label). The specimen was eventually returned to 

 the museum and erroneously reentered into the register on July 18, 1881, 

 as No. 84604. 

 Falcinellus Ridgwayi J. A. Allen 



Bull. Mus. Comp. Zool. 3: 355, July 1876. 

 =Plegadis ridgwayi (J. A. Allen). See Bangs, Bull. Mus. Comp. Zool. 



70: 179, 1930. 

 71273. Adult (sex not indicated). Conima, on Lake Titicaca, Depart- 

 ment of Puno, Peru. January 26, 1875. Collected by Samuel W. 

 Garman. Received from the Museum of Comparative Zoology (where 

 it was No. 24337). 

 71724. Immature (sex not indicated). Vilque Chico, on Lake Titicaca, 

 Department of Puno, Peru. January 23, 1875. Collected by Samuel 

 W. Garman. Received from the Museum of Comparative Zoology 

 (where it was No. 24338) . 

 84605. Adult (sex not indicated). Conima, on Lake Titicaca, Depart- 

 ment of Puno, Peru. January 25, 1875. Collected by Samuel W. 

 Garman. Received from Robert Ridgway, who acquired it from the 

 Museum of Comparative Zoology (where it was No. 24346). 

 Bangs {op. cit., p. 180) stated that this form was based upon 13 cotypes, 

 of which he could account for but ten in 1930. The three here listed are, 

 of course, the missing specimens. 



No. 84605 carries only Ridgway's private label, on which the date ap- 

 pears as January 26, 1875; J. L. Peters has informed me {in epist.) that 

 the bird was in fact taken on January 25. 



