344 MESSRS. P. L. SCLATER AND 0. SALVIN [June 28, 
is provided at each station to enable the track-master to examine the 
line ; they are all kept with great care, and usually named with re- 
ference to some taste of the owner. The “ Ornithologist”’ of Lion 
Hill was an easy-going and fast conveyance, and saved us some long 
walks in the hot sun.—O. S8.] 
Our list comprises 272 species, most of which are included in Mr. 
Lawrence’s papers, and to which he adds 117 more, which have not 
yet come under our notice. We have therefore 389 species at pre- 
sent known to inhabit this section of the isthmus. The discrepancy 
between this number and the total given by Mr. Lawrence (415) is 
explained by noticing that his numbers are placed for reference, and 
not to indicate the total number of species found in the district. 
Thus when a correction of synonymy is made, the bird is numbered 
twice over. 
Fam. Turpip&. 
1. Turpus Grayit, Bp. 
“ Turdus casius, Bp.” ; Lawrence, Ann. of Lyc. of Nat. Hist. N.Y. 
vii. p. 326. 
Agrees perfectly with Guatemalan and Mexican specimens. _ 
The differences pointed out by Mr. Lawrence between 7”. casius 
and 7’. grayii do not hold on comparison with a selected series of the 
Central American species. 
Other Thrushes mentioned by Mr. Lawrence are 7’. fuscescens, 
Stephens, 7’, obsoletus, Lawr., and 7. minimus, Lafr. (=T. swain- 
sonit, Cab. : vide Baird, Rev. Am. Birds, p. 20). 
Fam. SyLv1iDz&. 
2. PowiopriLa supERciLiARis, Lawr. Ann. Lye. Nat, Hist. N.Y. 
vil. p. 304. 
Panama examples agree with specimens from the Pacific coast of 
Ecuador collected by Fraser, which in Sclater’s American Catalogue 
are referred to P. belineata. The true P. bilineata (or at least that 
which we take for it, Bonaparte’s description being too vague for 
accurate identification) has the whole circlet round the eye white, 
and is purer white below—the P. superciliaris being of an ashy-white 
below, ard having the space immediately behind the eye black. 
The geographical range of these black-headed Polioptile in Cen- 
tral America is rather puzzling. The present species extends from 
Western Ecuador to Costa Rica, and then reappears at Chisee in 
Central Vera Paz, from which locality Salvin has a single male spe- 
cimen; while Central Guatemala is occupied by DP. aldiloris, Scl. 
& Salv., having the lores only white. 
Fam. TROGLODYTIDZ. 
3. HELEODYTES ALBO-BRUNNEUS, Lawr. Ibis, 1862, p. 10. 
A strict congener of H. griseus (Sw.), but very distinct in colora- 
tion, and with the bill rather shorter and more curved. 
