498 CORVIDZ. 
3. Cyanolyca yucatanica. (Cyanocitta yucatanica, Tab. XX XV.) 
Cyanocitta yucatanica, Dubois, Bull. Ac. Brux. ser. 2, xl. p. 797"; Boucard, P. Z.S. 1883, p. 446°. 
Xanthura yucatanica, Sharpe, Cat. B. Brit. Mus. iii. p. 183°. 
Corvus (Pica) beecheii, Eyd. & Gerv. Mag. Zool. 1836, cl. 11. t. 724; Voy. ‘ Favorite,’ t. 20°. 
Cyanocitta beecheii, Bp. Consp. Av. i. p. 378°. 
Cyanocitta crassirostris, Puch. Rev. Zool. 1858, p. 1967; Moore, P. Z. 8. 1859, p. 57°; Salv. Ibis, 
1861, p. 353°; Lawr. Ann. Lyc. N. Y. ix. p. 201”. 
Cyanocitta germana, Scl. & Salv. P. Z. 8. 1876, p. 270”. 
Viridescente-azurea; uropygio et cauda supra cyanescentioribus; capite toto cum cervice et corpore subtus 
nigerrimis ; rostro nigro, pedibus carneis. Long. tota 12°5, alee 5:4, caude 6-5, rostri a rictu 1:4, tarsi 1°4. 
Q mari similis, sed rostro flavo et cauda rectricibus utrinque quatuor externis albo terminatis. (Descr. maris et 
femine ex Meco Ins. Yucatan. Mus. nostr.) 
Hab. Mexico, Yucatan (Schott °, Gawmer?, Cabot), Meco I. and Mugeres I., Yucatan 
(Gaumer); British Honpuras (Dyson ?), Old River (Leyland?7, O. S8.); Guave- 
MALA, near Lake Yaxha (0. S.). 
This bird for a long time passed under the name of Cyanocitta crassirostris of Bona- 
parte, but it has been proved that this title really belongs to C. beecheyi of Western 
Mexico; the discovery was made nearly at the same time by Dubois and by Sclater and 
Salvin, both of whom proposed names for the present species, that of Dubois having a 
slight priority. | 
C. yucatanica, under which name this Jay now stands, is a fairly isolated species, no 
other member of the family having the sexes so markedly different, though C. beecheyi 
has the same sexual differences in the colouring of the bill. Its range is very restricted, 
being practically confined to the promontory of Yucatan and those portions of Guate- 
mala and British Honduras immediately joining ; it is also found on Meco and Mugeres 
Islands, off the extreme north-eastern coast. Mr. Gaumer speaks of it as exceedingly 
abundant in Northern Yucatan, and often very destructive in cornfields and amongst 
fruit; he adds, that from twenty to one hundred individuals associate in flocks, which, 
on being approached, utter loud cries. On his journey from Peten to the coast down 
the Belize river, Salvin not unfrequently met with this Jay, chiefly in logwood scrubs, 
such as abound about the lake of Yaxha; here, too, they were seen associated in flocks, 
though not so large as Mr. Gaumer speaks of. 
y. Caput totum nigrum, venter cyaneus. 
4. Cyanolyca melanocyanea. 
Garrulus (Cyanocorax) melanocyaneus, Hartl. Rev. Zool. 1844, p. 215°. 
Cyanolyca melanocyanea, Cab. Mus. Hein. i. p. 223°. 
Cyanocitta melanocyanea, Bp. Consp. Av. i. p. 878°; Scl. & Salv. Ibis, 1859, p. 21, t. 5. f. 64; 
R. Owen, Ibis, 1861, p. 63°; Scl. Ibis, 1873, p. 373°. 
