222 



5. PTILOaONYS. ^yp^ 



rtilogonatus, Swaim. Zool. Joitrn. iii. p. 164 (1827) P. cinereus. 



rtiliogonys, Steams. Phil. Mug. new series, i. p. 368 



(1827) P. cinereus. 



rtilog-ouYS, Bp. Consp. i. p. 335 (18o0). 



Splienotelus, Bainl, Review Amer. B. p. 412 (1865) * . . P. caudatus. 



Bill of Ptilogonys cinereus, to show position of nasal aperture. 

 licinge. Central America ; Mexico to Panama. 



Key to the Sjyecies. 



a. Tail square ; no yellow on throat or hinder head 



and neck ; eyelid white. 



a'. Bluish grey" above ; head lavender-grey ; fore- 

 head white ; flanks olive-yellow cinereus J ad., p. 222 



b'. Brown above ; head like the back ; base of 



forehead white ; flanks brown like the , ^.^^^^^^^ ^ ^^ ^^ 



b. Tad graduated ; eyelid yellow. ' ■* ' ^ 



c'. Back grey ; breast grey caudatns (J ad., p. 224. 



d'. Back and breast olive-yellow caudatus $ , p. 224. 



1. Ptilogonys cinereus. 



Ptilogonatus cinereus, Sxuains. Zool. Journ. iii. p. 164 (1827). 

 Ptilogonys cinereus, Swains. Phil. Mag. new ser. ii. pi. 62 (1831-32), 



iii. pi. 102 (1832-33) ; Graij, Gen. B. i. p. 281 (1846) ; Bji. Consp. 



i. p. 335 (1860) ; Scl. P. Z. S. 1856, p. 299, 1858, p. 302 ; Scl. ^ Salv. 



Ibis, 1859, p. 13, 1860, p. 31 ; Scl. P. Z. S. 1859, p. 364, 1864, 



p. 173 ; id. Cat. Amer. B. p. 47 (1862) ; Baird, Eevie^u Amer. 



B. p. 412 (1866) ; Sumichr. Mem. Bost. Soc. N. H. i. p. 548 



(1869) ; Gray, Hand-l. B. i. p. 366, no. 5568 (1869) ; Scl. ^ Salv. 



Nomencl. Av. Neotr. p. 13 (1873) ; Dugcs, La Natur. i. p. 141 



(1868) ; Lawr. Mem. Bost. Soc. N. H. ii. p. 273 (1874) ; Salv. Cat. 



Strickl. Coll. p. 147 (1882) ; Salv. ^- Godm. Biol. Centr.-Amer., 



^yes, i. p. 217 (188.3). 

 Hypothymis chrysorrhrea, Temm. PI. Col. iii. pi. 452 (1828). 

 Hypothvmis mexicanus, Licht. Preis- Vei-z. mex. VUg. p. 2 (1830) ; 



Cab.J.f. O. 1863, p. 58. 



Adult male. General colour above delicate bluish grey, the long 

 feathers on the sides of the rump with subterminal mai'ks of silky 

 white ; lesser and median wing-coverts like the back ; greater 



* The very different form of tail in P. catidatus would warrant the separation 

 of the species under a distinct generic name, were it not for the absolute simi- 

 larity in character and colour of plumage to that of P. cinereus. If it were done, 

 then Ampelis japonicus might reasonably be separated from A. garruhis, as the 

 wax-like appendages to the wings and lail are not present in the Japanese bird. 



