AMAUROLIMNAS.—PORZANA. 321 
This genus differs from the true Rails in the form of the bill, which is shorter and 
deeper than in Rallus and Aramides. 
Amaurolimnas has but one species, A. concolor, a small Crake, with the plumage, 
including the under wing-coverts and the axillaries, of a uniform dull colour; the 
tarsus and middle toe are nearly the same length ; the bill is somewhat more elongated 
than in the allied genera, the culmen being equal to the inner toe. 
1. Amaurolimnas concolor. 
Rallus concolor, Gosse, Birds of Jamaica, p. 369, t. 103 
Porzana concolor, Scl. & Salv. P.Z. 8. 1868, p. 452°; Scl. Ibis, 1878, p. 373 °, 
Amaurolimnas concolor, Sharpe, Cat. Birds Brit. Mus, xxiii. p. 87 *. 
Corethrura cayennensis (nec Gm.), Moore, P. Z.S. 1859, p. 64°; Scl. & Salv. Ibis, 1859, p. 230°. 
Corethrura guatemalensis, Lawr. Pr. Acad. Philad. 1863, p. 106’. 
Supra rufescenti-brunneus, dorso vix olivascente adumbrato ; alis caudaque letius castaneis; pileo dorso 
concolore vix saturatiore; supereiliis facie laterali et corpore subtus toto saturate vinaceo-castaneis, 
mento summo paullo pallidiore. Long. tota circa 7°5, ale 4°35, caude 1°8, culm. 1:0, tarsi 1-4. (Deser. 
exempl. ad. ex Guatemala. Mus. nostr.) 
Hab. Guatemata2? (M*Leannan*); Honpuras, Omoa (Leyland® °); Nicaragua, 
Chontales (Belt? +)—Guiana‘ ; Brazm*; Jamarca *. 
Little is known of this bird. Leyland says that it was not common near Omoa, 
where the species kept to the bush and ran like a Quail. It uttered a shrill whistle 
resembling that of a Tinamou, and its note might easily be mistaken for that of one 
of the latter birds. 
PORZANA. 
Porzana, Vieill. Analyse, p. 61 (1816); Sharpe, Cat. Birds Brit. Mus. xxiii. p. 92 (1894). 
The genus Porzana, which contains the typical Crakes, is distinguished from the 
foregoing by the somewhat shorter tarsus, which is exceeded in length by that of the 
middle toe and claw. ‘The secondaries are shorter than the primaries, and the difference 
in length is greater than that of the hind toe and claw, so that the wing is slightly less 
rounded than in some of the allied genera. The sexes are alike in colour, and the 
northern forms are migratory. 
About fourteen species are known, these being distributed over the greater portion 
of the globe, but only one, P. carolina, a migrant from North America, occurs 
within our limits. 
“1. Porzana carolina. 
The Little American Water-hen, Edwards, Nat. Hist. Birds, ili. t. 144°. 
Rallus carolinus, Linn. Syst. Nat. i. p. 263°. 
Porzana carolina, Scl. & Salv. Ibis, 1859, p. 230°, 1864, p. 372°, 1868, p. 450°; Lawr. Ann. Lye. 
N. Y. vii. p. 479°; Mem. Bost. Soc. N. H. i p. 3127; Scl. P. Z. 8S. 1864, p.179°; Salv. 
BIOL. CENTR.-AMER., Aves, Vol. III., Aprid 1903. 4] 
