410 
Mr. II. E. Dresser’s Notes on 
established on a single female specimen from Costa Rica. 
Arce has more recently forwarded a pair from Veragua, by 
which we find that the male differs in having the nape and 
lower back strongly overrun with golden yellow. 
Of the rare Calliste hartlaubi (originally described by me 
as a Dacnis (!), cf. Ibis, 1863, p. 452), Messrs. Salvin and 
Godman have lately obtained a single skin, of the ordinary 
ce Bogota ” make. They have likewise been so fortunate as 
to secure a specimen of the Calliste cucullata of Swainson, 
peculiar, as I believe, to Western Venezuela, of which modern 
examples are very scarce. 
Lastly I may call attention to M. Dubois’s recently pub¬ 
lished memoir on the variability of certain species of Calliste*, 
and remark that the question, as to what amount of difference 
is sufficient to entitle a local form to specific rank, must 
always remain an open one. With some of M. Dubois’s 
unifications I should be disposed to concur; for instance, I 
have already rejoined C. cyanescens to C. nigriviridis ; but 
I could not agree to consider such a well-marked form as C. 
yeni the same as C. tatao, or to unite under one name C. 
gyrola , C. gyroloides, and C. desmaresti. 
XLI.— Notes on Severtzoff’s ‘ Fauna of Turkestan ’ ( Turkes - 
tanskie Jevotnie). By H. E. Dresser. 
[Continued from p. 330, and concluded.] 
312. Machetes pugnax (L.); Severtzoff, p. 69. 
Horizontal range . Occurs on passage in all four districts. 
Vertical range. Occurs on passage in districts 1 and 2. 
313. Tringa minuta, Leisl.; Severtzoff, p. 69. 
Horizontal range. Occurs on passage in districts I., II., 
and III. 
Vertical range. Occurs on passage in districts 1 and 2. 
* Remarques sur la variability de certaines especes du genre Calliste , 
par M. Alph. Dubois, conservateur au Musee royal d’histoire naturelle de 
Belgique. Bull, Acad. Roy. des Sci. Belgique, 2me ser. t. xxxviii. (1874) 
p. 124. 
