21. HETEROCXEJirs. 275 



genus differs from most of its relatives in the same family in having 

 the tarsi quite smooth, the divisions of the scutes being obsolete 

 Ihree other species now associated with it show the same structure, 

 as do the three succeeding genera to a somewhat less extent The 



Bill o( Hcfcrocncmis ncevia. 



tail is short and slightly rounded ; tlie bill lengthened and com- 



Gnkn' ■ pf''^r^''"''"'t' f thus limited, appears to be only found in 

 ijuiana, Colombia, and Amazonia. 



Key to tin S]oecies. 



A. Belly striped i „^,. ,^,.^ 



B. Belly not ptriped. ^' '''''''"' P" ^"'' 



a. Breast cinereous. 



I Body beneath lighter ; . 2. leucostiuma, p. 276. 



I Body beneath darker q o„^,„.„^„ ' M~« 



b. Breast white ... 4 '"^"' f "' P" ^'^- 



4. argcntata, p. 277. 



1. Heterocnemis naevia. 



Wall-Creeper of Surinam, Edwards, Birds, pi. ;J4(i (A\ 

 Sitta npevia, Gm. S. X. i. p. 440. '' 



Founnillier grivele de Cayenne, Datib. PL Enl 8-^3 fi<r \ (Q\ 

 iuidus hueatus, Gm. S. N. i. p. 828. - • o- \^)- 



Mjuoturdus lineatus, Mcnetr. Mem.' Acad. St. Petersb. ser. vi. (ScL 



Holocnemis tlammata, Stricld. Ann. N. H. xiii. p. 41o, pi 1.3 fP") 



STm'''^''''''' *'^''''^^'^- ^""^''- ^''"- ^^^^' P- ■^^' pi- ^^-^s- 1 (l)i 



IMocueiuis lineata, Cab. Wier/m. Arch. 1847, pt. i. p. 214 ■ Id in 

 !ichomb. Oman. iii. p. G80 ; Pp. Consj). i p -'O'' ' • ' 



Heterocnemis najvia, Scl. P. Z. ,S'. 1858, p. 247 ; ilcnt. A. B n 186 ■ 

 ^l. et 6'alv. Noviencl. p. 73; Sah: Ibis, 18S5, p. 4-^7 f Brit' 

 Guiana). , i -x-i yxj1.1L. 



Above dark plumbeous ; wings and tail blackish, win«-coverts 

 terminated by small white round spots: beneath rather paler- 

 throat and breast marked with white shaft-spots, which are lon-er 

 and narrower on the upj^er belly : bill blackish ; feet light brow°n • 

 whole length 5-5 inches, wing ;}, tail 2. Female. Above brown! 

 with tulvous terminal spots on the coverts : beneath dirty white 

 with brownish striations. ^ ' 



Ilab. Guiana and Cayenne. 



t2 



