i 



procp:edings of uxited states national :\[uset7m. 359 



23498 g. D. 13 5 A. 14; Y. 3; P. 35; 0. 31 ; B. S. Leiigtli ICT millime- 

 ters. 

 GGGl. 17 specimeus. St. Michaels, Alaslai. II. M. Bannister. 

 a. Length 210 millimeters. D. 13; A. 14; V. 3; P. 33; C— ; B. 8. 

 h. Length 200 millimeters. D. 14: A. 14; Y. 3; P. 35; C— ; B. 8. 

 e. Length 135 millimeters. D. 12: A. 14; Y. 3; P. 35; C. 30; B. 8. 



The remaining fourteen specimens vary in length from 110 to 180 mil- 

 limeters. 



United States National Museum, 

 WasJiingtoiij January 5, 1880. 



FOURTBI III\.STAI.:HEIVT OF ©R!VBTBIOI.O«ICAI. BIBI.IOCiRAPHV r 



BE:INC} a Jf.ffJ^T ©F FAUIVA!. I»l.TjBf.S«'ATI©.\S REff,ATIIV« T© BRIT- 

 I!§H RIRD!^. 



My BR. ELS^IOTT COUES, U. S. A. 



The zlppendix to the "Birds of the Colorado Yalley- (pp. 507 [lJ-784 

 [218]), which gives the titles of "Faunal Publications" relating to North 

 American Birds, is to be considered as the first instalment of a "Uni- 

 versal Bibliography of Ornithology''. 



The second instalment occupies pp. 230-330 of the " Bulletin of the 

 United States Geological and Geographical Survey of the Territories 'V 

 Yol. Y, No. 2, Sept. G, 1879, and similarly gives the titles of "Faunal 

 Publications" relating to the Birds of the rest of America.. 



The.third instalment, which occnpies the same "Bulletin", same Yol.,, 

 No. 4 (in press), consists of an entirely different set of titles, being those 

 belonging to the "systematic" department of the whole Bibliography^ 

 in so far as America is concerned. Here come the titles of all publica- 

 tions relating to particular species, genera, or families of American Birds, 

 systematically arranged, hy families, and in chronological order. 



These three previous instalments represent a nearly complet^^ Bibli- 

 ogi-aphy of American Ornithology. 



This present, /o«r^A, instalment of the worlv is of the same character 

 as the first two: that is, it relates to "regional" or "faunal" as distin- 

 guished from "systematic" ornithology; and it undertakes to do for 

 British Birds what the first two did for American. 



That is to say: here belong the titles of all publications treating of 

 British Birds as such, exclusively, and indiscriminately or collectively. 

 In publishing these preliminary instalments, it is necessary to draw a 

 hard and fast line between those titles which are and those which are 

 not to be found in each one of them — a line which would be very evident 

 to one cognizant of the plan of the whole Bibliography, though by no 

 means obvious at first sight. It is therefore necessary for me to bo 

 exjjlicit here. 



In order to fall within the scope, of this fourth instalment, a publica- 



