Synonymy in the Family Sylviidae. 275 



(1869). I have examined Heuglin's type in the Senckenberg 

 Museum in Frankfort, and am unable to distinguish it from 

 A. turdoides (Meyer). The wing measures 3'48 inches, and 

 the second and third primaries are equal and longest. 



Acrocephalus fidvolateralis, Sharpe, Layard's B. S. Afr. 

 p. 289 (1877). The type in the British Museum agrees in 

 all its dimensions and in its wing-formula with A. turdoides 

 (Meyer), of which there can be no doubt that it is an example 

 in autumn plumage. Through the kindness of Mr. Wardlaw 

 Ramsay I have been able to examine a copy of that rare work, 

 Naumann's f Naturgeschichte der Land- und Wasser-Vogel 

 des nordlichen Deutschlands und angranzender Lander/ In 

 the e< Nachtrag " to this work, vol. iv. p. 199, published in 

 1811, the genus Acrocephalus is carefully characterized, and 

 seven species are named and the specific characters enume- 

 rated. The first of these is Acrocephalus lacustris (p. 201), 

 which is identified with Turdus arundinaceus , Linn. The 

 term Acrocephalus arundinaceus having been so universally 

 applied to A. streperus (Vieill.), amongst others by Naumann, 

 on the page last quoted, the Great Sedge- Warbler will proba- 

 bly be best designated for the future as Acrocephalus lacus- 

 tris , Naum., a name which antedates A. turdoides (Meyer) 

 and is not antedated by A.junco (Pall.). For the informa- 

 tion of ornithologists anxious to distinguish themselves by 

 discovering forgotten names, I may state that there are no 

 Latin names of birds given in this rare work of Naumann's, 

 except in the genus Acrocephalus, beyond an occasional quo- 

 tation of Linnseus. 



Locustellajaponica, Cassin, Proc. Ac. Sc. Phil. 1858, p. 194, 

 The type in the museum of the Academy of Natural Sciences 

 in Philadelphia is almost an exact duplicate of the type 

 of L. ochotensis* (Midd.) in the St. Petersburg Museum, 

 the feathers of the upper parts showing traces only of darker 

 centres. The name must therefore sink into a synonym of 

 MiddendorfPs species. 



Locustella minor, David et Oust. Ois. Chine, p. 250 (1877). 

 The type of this species is lost ; but F Abbe David assures me 

 that his name must be added to the synonyms of L. certhiola 



