APHELOCOMA. 495 
Aphelocoma unicolor, Sharpe, Cat. B. Brit. Mus. iii. p. 118°. 
Cyanocorax concolor, Cass. Pr. Ac. Phil. 1848, pp. 26”, 90%. 
Saturate azurea, unicolor, alis nigricantibus, extus dorsi colore limbatis, loris cxruleo-nigris, alis et cauda 
nigris. Long. tota 12°5, ale 6:3, caude 6°4, rostri a rictu 1-5, tarsi 1-5. (Descr. exempl. ex Jalapa, 
Mexico. Mus. nostr.) 
Hab. Mexico! 10, valley of Mexico (White’), Puebla (Pease), Jalapa (Sallé, 
de Oca*).—GuatTEMALA, Totonicapam, Quiche, Chilasco (0. 8S. & F. D. G.8). 
This species appears to be somewhat locally distributed in the mountains of Southern 
Mexico. Mr. Pease states that it is common in the hills bordering on the plains of 
Puebla, at Pinal, and the mountains skirting the valley of Mexico, where it remains all 
the year!!, Though included in both Sallé’s and de Oca’s collections made in the 
vicinity of Jalapa, no mention is made of this species by Sumichrast as an inhabitant of 
the State of Vera Cruz, which is somewhat strange, and leads us to suspect that some 
of the Jays at least of his list may have been incorrectly determined. In Guatemala 
A. unicolor is a very local species; we first met with it in the upland forests on the 
ridge which divides the plain of Salama from the valley of the Motagua, and again 
in the district of Chilasco which overhangs the valley of the Polochic, at elevations 
varying from 4000 to 6000 feet. We subsequently found it on the ridge between 
Quiche and Totonicapam, at elevations reaching as high as 10,000 feet. We are not 
aware that it ever occurs in collections made near Coban, and we saw no sign of it in 
the upland forests of the volcanos. A. wnicolor in its habits resembles its congeners. 
It lives in pine-woods, associating in flocks of five or six individuals. 
y:. Corpus subtus ceruleum, gula ceruleo-albida. 
4. Aphelocoma nana, 
Cyanocorax nanus, DuBus, Bull. Ac. Brux. xiv. pt. 2, p. 103°; Scl. P. Z. S. 1857, p. 20475; Sel. 
P. Z. 8. 1859, p. 365 *. 
Cyanocitta nanus, Bp. Consp. Av. i. p. 878%; Scl. P. Z. S. 1859, p. 381°; Sumichrast, Mem. Bost. 
Soc. N. H.i. p. 554°. 
Aphelocoma nana, Sharpe, Cat. B. Brit. Mus. iii. p. 1187. 
Saturate azurea, subtus sordidior ; alis et cauda extus concoloribus ; pileo cyaneo tincto; fronte et superciliis 
indistinctis magis canescentibus ; oculorum ambitu et capitis lateribus nigris; gula tota albida ceeruleo vix 
tincta. Long. tota 8-1, ala 4:1, caude 4:0, rostri a rictu 1-0, tarsi 1-2. (Descr. exempl. ex Jalapa, 
Mexico. Mus. nostr.) 
Hab. Mexico!4, alpine region of Vera Cruz (Swmichrast ®), Jalapa (Sallé?, de Oca?), 
Cordova’, Llano Verde (Boucard°), near the city of Mexico (Mus. nostr.). 
According to Sumichrast, this species is a native of the alpine region of Vera Cruz, that 
is to say, between 5000 and 11,500 feet above the sea, where it occurs with several other 
Jays, such as Cyanocitta coronata, but he gives no special account of its habits. Other 
collectors have also met with it in this portion of Mexico; but it would appear, from 
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