354 FRINGILLIDA. 
4, Spermophila aurita. 
Spermophila aurita, Bp. Consp. Av.i. p. 497°; Lawr. Ann. Lyc. N.Y. vii. p. 3337; Scl. Ibis, 1871, 
p. 14, t. 2. £1, 2° 
Sporophila hoffmannii, Cab. J. f. Orn. 1861, p. 64. 
Spermophila hoffmanni, Frantz. J. f. Orn. 1869, p. 801°. 
Spermophila lineata, Lawr. Ann. Lyc. N. Y. vii. p. 474°. 
Spermophila semicollaris, Lawr. Aun. Lyc. N. Y. viii. p. 10"; Sel. & Salv. P. Z. S. 1864, p. 352°; 
Salv. P. Z. S. 1867, p. 141°, 1870, p. 189”°. 
Spermophila hicksi, Lawr. Ann. Lyc. N. Y. viii. p. 171". 
Spermophila fortipes, Lawr. Ann. Lye. N. Y. viii. p. 172”. 
Spermophila collaris, Lawr. Ann. Lye. N. Y. viii. p. 177%. 
Nigra; speculo alari, plaga utrinque cervicali (interdum semitorquem formante) et ventre medio albis; rostro 
nigro, pedibus fuscis. Long. tota 4:0, ale 2:1, caudex 1:9, tarsi 0°55. 
2 olivacea, alis caudaque obscurioribus, dorsi colore limbatis, subtus dilutior, flavicans, tectricibus subalaribus 
albis. (Descr. maris et feminze ex Lion Hill, Panama. Mus. nostr.) 
Hab. Costa Rica (Hoffmann4, v. Frantzius®); Panama (Hicks ™), Volcan de Chiriqui, 
Bugaba 1° (Arcé), David (Hicks *), Mina de Chorcha, Chitra, Calovevora, Santa 
Fé ° (Arcé), Lion Hill (M‘Leannan?°78), Paraiso Station (Hughes), Obispo Station 
(O. S.), Panama city (Hicks 14), 
When Mr. Sclater compiled his Monograph of the genus Spermophila in 1871, he 
had the types of all the four species proposed, under the above names, by Mr. Lawrence 
before him. We also then had an opportunity of comparing them together, and with 
a considerable series of our own, and came to the same conclusion as Mr. Sclater, that 
they all, together with S. hoffmanni, belonged to one variable species, thus confirming 
the doubts expressed concerning them by Salvin the previous year }°. The point of 
variation lies in the amount of white on the neck, which in some specimens is confined 
to a white patch on either side. In others these patches are connected by a band 
across the throat ; in others the throat-patch alone appears, and in others, again, there 
is hardly any white at all on the neck. These forms seem connected together by 
insensible steps, and thus must be considered as varieties of one species. 
The name S. aurita seems applicable to this bird, though the locality, Brazil, given 
by Bonaparte, its describer, is doubtless erroneous !. The bird, in fact, hardly passes 
the limits of the State of Panama, where it is everywhere abundant. Its presence in 
Costa Rica was proved by specimens sent to the Berlin Museum by Hoffmann®; but we 
have no examples from that country, nor had Mr. Lawrence at the time of compiling 
his list of Costa-Rica birds. - 
5. Spermophila gutturalis. 
Fringilla gutturalis, Licht. Verz. Doubl. p. 26°. 
Sporophila gutturalis, Burm. Syst. Ueb. iii. p. 244°. 
