62 JOURNAL OF THE WASHINGTON ACADEMY OF SCIENCES VOL. 11, NO. 3 



and about 750,000 on the Chincha Islands, 400,000 of the latter being young. 

 The next important producer of guano is Pelicanus thagns, of which 100,000 

 were found on the islands of L,obos de Afuera. Other birds are much less 

 productive of guano, but make, however, some contribution. Among these 

 other birds, those most conspicuous in this region are Spheniscus humboldti, 

 Lams dominicanus, Larus belcheri, Lams niodesUis, Sterna himndinacea, 

 Larosterna inca, Diomedea irrorata, Oceanites oceanicus, Hydr abates pela- 

 gicus, Puffimts grisetis, Pelecanoides garnoti, Sula nebouxii, Phalacrocorax 

 vigua, and Phalacrocorax gaimardi. The 17 plates show various features 

 of the remarkable avian fauna of these islands. Harry C. Oberholser. 



ORNITHOLOGY. — Notes on the races of Quiscalus quiscula {Linnaeus). 

 Harry C. Oberholser. Auk 36: 549-555. 1919. 

 Recent investigations show that the three current subspecies of Quiscalus 

 quiscida (Linnaeus) are fully entitled to recognition; but since Quiscalus 

 quiscula quiscula (Linnaeus) was originally based on the bird from South 

 Carolina, which is the same as the Florida race Quiscalus quiscida aglaeus 

 Baird, it becomes the name for the southern race. The northern bird hitherto 

 called Quiscalus quiscula quiscula proves to be without a name, since all 

 the synonyms of the species relate to the typical form from the southern 

 United States. The birds from the middle and eastern United vStates are 

 therefore named Quiscalus quiscida ridgwayi. H. C. O. 



ORNITHOLOGY. — Description of another new subspecies of Lanius ludo- 

 vicianus. Harry C. Oberholser. Wilson Bull. 31: 87-90. 1919. 

 The breeding form of Lanius ludovicianus that occupies north central 

 Lower California is a readily recognizable subspecies, and is here named 

 Lanius ludoviciamis grinnelli. It is a very darkly colored bird with little 

 white on the scapulars, and small terminal white areas on the outer rectrices, 

 and is apparently most nearly related to Lanius ludovicianus anthonyi 

 and to Lanius ludovicianus mearnsi. Present investigations show that 

 Lanius ludovicianus mearnsi is readily recognizable as a subspecies although 

 commonly considered a synonym of Lanius ludovicianus anthonyi. 



H. C. O. 



ORNITHOLOGY. — The status of Larus hyperboreus barrovianus Ridgivay. 

 Harry C. Oberholser. Proc. Biol. Soc. Wash. 32: 173-17G. 1919. 

 A further investigation into the claims of Larus hyperboreus barrovianus 

 Ridgway to recognition as a subspecies indicates that it is a tenable race. 

 It is distinguishable from Larus hyperboreus hyperboreus in the smaller size; 

 in the relatively as well as actually slenderer bill ; and in the noticeably darker 

 upper surface. H. C. O. 



ORNITHOLOGY.— i?^^or/s on the scientific restdts of the expedition to the 



tropical Pacific in charge of Alexander Agassiz. XXI. The birds. 



Charles Haskins Townsend and Alexander Wetmore. Bull. 

 Mus. Comp. Zool. 63: 151-225. 1919. 



This is a report on collections made h)y Mr. Charles H. Townsend during 

 the cruise of the U. S. Fisheries Steamer "Albatross," in the Pacific Ocean 

 from August, 1899, to March, 1900. During this voyage, which was under- 

 taken for the purpose of studying the coral reef district of the tropical Pacific 

 the following island groups were visited: Marquesas, Paumotu, Society, 



