322 PSITTAC1DJ5. 



b'". Bill yellow, -with the hase dusky. 

 c 4 . Chin and band across the lower 



throat blue ma.vimiliani, p. 327. 



d*. Chin and band across the lower 



throat purple vinous bridged, p. 329. 



b". Cheeks not green ; bill yellow; bases 

 of the feathers of the head white. 



c". Head and chin vinous red , tumultuosus, p. 330. 



d'". Sinciput white, with the feathers 

 edged with pale red ; cheeks 

 white, with the feathers edged 



with dusky seniloides, p. 330. 



b. Primaries and their wing-coverts blue. 



c . Pileum and lores white ; back green . . senilis, p. 331. 

 d'. Pileum and lores dark, with no white. 

 e". Inner webs of the quills below 

 verditer-blue ; base of the tail 



with no red colour chalcoftterus, p. 333. 



f". Inner webs of the quills below 

 deep blue; base of the tail- 

 feathers on the inner webs and 

 below broadly red fusevs, p. 334. 



1. Pionus menstruus. 



Psittacus Guianensis cyanocephalos, Briss. Orn. iv. p. 247 (1760) 



(excl. svn.). 

 Blue-headed Parrot, Edw. Glean, vii. p. 226, pi. 314 (1764) ; Lath. 



Syn. i. p. 301 (1781) ; id. Gen. Hist. ii. p. 221 (1822). 



Psittacus capite cseruleo, Edw. Glean, vii. p. 325 (1764). 



Psittacus menstruus, Linn. S. N. i. p. 148, n. 39 (1766) ; Gin. S. N. 



i. p. 345, n. 29 (1788) ; Lath. Ind. Orn. i. p. 113, n. 95 (1790) ; 



Shaw, Gen. Zool. viii. p. 540 (1811); Bechit. Kurze Ueb. p. 91 



(1811-12) ; Vieill. N. D. xxv. p. 331 (1817) ; Kuhl, Consp. Psitt. 



p. 72 (part.) (1820) ; ? Wied, Meise, i. p. 175 (1820), ii. p. 341 



(1821) ; ? Spi.v, Av. Bras. i. p. 46 (1824) ; Steph. Gen. Zool. xiv. 



p. 103 (1826) ; Voigt, Car. Uebers. p. 740 (1831) ; ? Wied, Beitr. 



iv. p. 237 (1832) ; Halm, Orn. Atl. p. 59, t. 44 (1836) ; G. R. Gr. 



Gen. B. p. 421, n. 9 (1846) ; Cab. in Schomb. Guiana, iii. p. 723 



(1848) ; Brehm, Mon. d. Papag. t. 48 (nee 61) (1854) ; G. R. Gr. 



List Psitt. Brit. Mus. p. 75 (1859) ; Leotaud, Ois. de Pile de la 



Trinidad, p. 329 (1866) ; Gulliv. P. Z. S. 1875, p. 489. 



Psittacus cyanocephalus, Scop. (?iec Linn.) Annus I. Hist. Nat. 



p. 33 (1769). 

 Perroquet a tete bleue de la Guiane, D'Aubent, PI. Enl. 384. 

 Papegai a tete et gorge bleue, Buff. Hist. Nat. Ois. vi. p. 243 



(1779). 

 Psittacus cyanogula, Bodd. Tail. PI. Enl. p. 23 (1783). 

 Perroquet a camail bleue, male, Levaill. Pen: pi. 114 (1805). 

 Papegai a tete bleue, Vieill. Enc. MM., Atl. pi. 229. f. 1 (1823). 

 Psittacus purpureus (male), Less. Tr. d'Orn. p. 198 (1831). 

 Pionus menstruus, Wagl. Mon. Psitt. p. 602 (1832) (part. ?) ; Hartl. 

 Syst. Verz. Ges. Mus. p. 87 (1844) ; Bli/th, Cat. B. Mm. A. S. B. 

 p. 3 (1849); Bp. Rev. et Mag. de Zool. 1854, pp. 148, 151, 

 n. 114; ? Souanee, Rev. et Mag. de Zool. 1856, p. 155 (Bresil) ; Bp. 

 Namnannia, 1856, Consp. Psitt. n. 113; Burnt. Syst. Ueb. ii. 



