570 PSITTACIDA. 
RHYNCHOPSITTACUS. 
Rhynchopsitta, Bonaparte, Rev. et Mag. Zool. 1854, p. 149. 
Rhynchopsittacus, Salvadori, Cat. Birds Brit. Mus. xx. p. 168. 
This genus contains the single species R. pachyrhynchus, which resembles some of 
the Macaws in size, but differs from them in having the lores feathered as in Conurus. 
From the latter genus it can be distinguished by its much more compressed bill, the 
mandible being flattened and grooved in front, the culmen of the maxilla-rounded, and 
the nostrils completely hidden. The known range of the genus is restricted to Central 
and Northern Mexico, but it probably crosses the border into South-western Texas 
and Southern New Mexico; the details of its distribution are given below. 
1. Rhynchopsittacus pachyrhynchus. 
Macrocercus pachyrhynchus, Sw. Phil. Mag. new ser. i. p. 4391. 
Sittace pachyrhyncha, Wag\. Mon. Psitt. p. 667, t. 25%. 
Ara pachyrhyncha, Scl. P. Z. 8. 1859, p. 368°. 
Rhynchopsitta pachyrhyncha, Bp., Souancé, Icon. Perr. t.5*; Scl. P. Z. S. 1857, p. 230°; Sumichrast, 
Mem. Bost. Soc. N. H. i. p. 562°; La Nat. v. p. 232"; Salv. Ibis, 1871, p. 91°; Cat. 
Strickl. Coll. p. 464°; Allen, Bull. Am. Mus. N. H. v. p.34"°; Ridgw. Man. N. Am. Birds, 
ed. 2, p. 269". 
Rhynchopsittacus pachyrhynchus, Salvad. Cat. Birds Brit. Mus. xx. p. 169”. 
Psittacus strenuus, Licht. Preis-Verz. Mex. Vig. p. 1 (cf. J. f. Orn. 1863, p. 54). 
Psittacus pascha, Wag). Isis, 1831, p. 525 ™. 
Viridis, genis et tectricibus auricularibus letioribus ; fronte, pilei dimidio antico, superciliis, humeris et tibiis 
coccineis, macula ante oculos nigricante; tectricibus alarum majoribus subtus luteis, alis et cauda 
viridibus, subtus fusco-nigricantibus ; rostro et pedibus nigricantibus. Long. tota circa 15:0, ale 10-5, 
caudee rectr. med. 0-7, rectr. lat. 4:8, rostri culminis 1:8, tarsi 0°75. (Deser. maris ex Ciudad in Durango. 
Mus. nostr.) 
Hab. Norta America, Southern New Mexico, S.W. Texas !! 2—Mexico 9 13 14 (7. Mann*), 
Tablelands (Bullock+), Pachico in Chihuahua (Robinette 1°), Ciudad in Durango 
(Forrer), Cofre de Perote, Moyoapam, Popocatepetl (Sumichrast®"), Jalapa 
(de Oca ®). . 
This very distinct species of Parrot was discovered by Bullock on the tablelands of 
Mexico, and described by Swaiuson in 1827 as Macrocercus pachyrhynchus*, Specimens 
were shortly afterwards sent to Berlin by Deppe, and called Psittacus strenuus by 
Lichtenstein 1°, and then P. pascha by Wagler "4, the latter name being a substitute 
for that of Swainson. 
Its range seems restricted to the highlands of Mexico; and Sumichrast names 
Popocatepetl, Mozoapam on the volcano of Orizaba, and the Cofre de Perote as 
upland localities where it is to be met with® De Oca’s collection from Jalapa § 
contained specimens which probably came from the Cofre de Perote. None of the 
collectors recently employed by us in Mexico met with this bird; but Mr. Forrer 
