4. ACKOCEPHAirS. 89 



/'. Lengtliof wing 3'o to 27 inches. Second 

 primiry equal to or shorter than the 

 fourth. Legs and feet slatv brown. 

 a", (general colour of upper parts olive- 

 brown. 

 a'". Length of wing 3-o to 3'0 inches; 

 tail about one ninth less, 3'1 to 2'7 ; 

 culmen 95 to 0-8. Second primary 



between the third and tlfth orientalis, p. 97 



b"'. Length of wing3'o to 30inches; tail 

 onlv about one twentieth less, 3'4 to 

 2-9"; culmen 1-05 to 0-88. Second 

 primary between the iifth and 



seventh stentoreus, p. 98. 



c'". Length of wing 29 inches, tail 2-7, 

 culmen I'O. Second primary be- 

 tween the sixth and seventh syrinx, p. 100. 



d'". Length of wing 3 to 27 inches, 

 tail 2 8 to 2 b, culmen 0-8 to 0-7. 

 Second primary between the fifth 



and seventh australis, p. 100. 



6". General colour of upper parts russet- 

 brown Icngirostris, p. 99. 



d. Length of wing 28 to 2 inches ; if over 

 2'7, second primary longer than the fifth. 

 g'. Second primary louder than the fifth. 



c". Upper parts olive-brown palustris, p. 101. 



d". Upper parts with a slight russet tinge, 



mo-t decided on the rump streperus, p. 102. 



h'. Second primary shorter thin the fifth. 



e". Upper jiarts olive-brown dumetorum, p. 104. 



/". Upper parts with a decided russet tinge, 

 most pronounced on the rump. 

 e'". Length of wing 2-o to 2 2 inches, 



tail 2-2 to 2-0, "culmen 0-67 to 0-6 bcstkahis, p. lOG. 

 /'". Length of wing 2-3 to 2-0 inches, tail 



same length, culmen 0o6 to 0'52 . . ayricola, p. 105. 



1. Acroceplialns aquaticus. 



Acrocephalus aquaticus (Temm.)*. 



? Sylvia schanobffiinis ( Linn.), apiul Scop. Ann. i. p. 158 (1769). 



? Aquatic Warbler, Lath. Gen. Si/n. ii. p. 419 (1783, ex Scopoli). 



? Mutacilla aquatica, Gin. Syst. Xat. i. pt. 2, p. 953 (1788, ex Scopoli 



et Liifham). 

 P Sylvia aquatica (Gmel.), Lath. Ind. Orn. ii. p. 510 (1790). 

 Sylvia salu-aria (Linn.), aj/ud Lechst. Orn. 2'aschenb. p. 185 (1802); 



aimd Wuf, Taschenb. i. p. 232 (1810). 



* Tbe .\qiiatie Warbler has by no means a clear title to its name. Scopoli's 

 bird may bave been either a Sedge- Warbler or an Aquatic Warliler; but bis 

 clescriptiou is inconsistent with either of tbera. Neither Gmelin nor Latham 

 appear to have known tbe bird, but liave simply copied Scopoli. Bechstein, 

 Meyer and Wolf, and Naumann were woll acquainted with the bird, but iden- 

 tified it, probably incorreitly. with the ^fo'aci la Mh'caria of Linraeus, a name 

 which has been trausfeired from one species to another, until it has long ago 

 ceased to have any definite meaning or any scientific value. Temuiinck was 



