Synonymy in the Family Sylviide. 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 fulvolateralis, Sharpe, Layard’s B. 8. Aft. 
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 ‘ Naturgeschichte der Land- und Wasser-Végel 
des nérdlichen Deutschlands und angranzender Linder.’ In 
the “ 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 preba- 
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 Linneus. 
Locustella japonica, 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 
‘Middendorff’s species. 
Locustella minor, David et Oust. Ois. Chine, p. 250 (1877). 
The type of this species is lost; but Abbé David assures me 
that his name must be added to the synonyms of L. certhiola 
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