8. CHXOROSTILBOX. 47 



Sporadinus caniveti, Bj}. Bev. Zool. I80-I, p. 225 : Vcl. P. Z. S. 1859, 



p. 367. 

 Chlorolampis cauiveti, Cab. S,- Heine, Mus. Hein. iii. p. 47; Gould, 



Intr. Troch. p. 174 ; Heine, J. f. Orn. I860, p. 200 ; Boucard, 



P. Z. S. 1878, p. 71 ; Miik. Hist. Nat. Ois.-Mouches, ii. p. 81, 



iv. p. 198; id. Ann. Soc. Linn. Lyon, xy.u. p. 209; Eudes-Desl, 



Ann. Mus. Caen, i. p. 513. 

 Chlorolampis salrini, Cab. Sj- Heine, Mus. Hein. iii. p. 48; Cab. 



J.f. Orn. 18G3, p. 164; Goidd, Intr. Tvoch. p. 174; Heine, J. f. 



Orn. 18G3, p. 200 ; Lawr. Bull. U.S. Nat. Mus. no. 4, p. 128. 

 ChlorostUbouosberti, Gould, P. Z. S. 1860, p. .309 ; id. Mon. Troch. v. 



pi. 354 (July 1861J ; Sah\ Ibis, 1860, pp. 195, 263, 271, 1860, 



p. 204 ; Scl. * Cat. Am. B. p. 318 ; Eudes-Desl. Ann. 3Ius. Caen, 



i. p. 515 ; Nutting, Pr. U. S. Nat. Mus. vi. pp. 375, 394. 

 Chlorostilbou cauiveti, Gould, 3Ion. Troch. t. pi. 351 (May 1860) ; 



Scl. i)- Sah: Bjis, 1859, p. 130 ; Scl. Cat. Am. B. p. 318 ; Lawr. 



Bull. U.S. Nat. 3fus. no. 4, p. 33; Elliut, Syn. Troch. p. 168 ; 



Salv. Cat. StricJcl. Coll. p. 370 ; Boucard, P. Z. S. 1883, p. 451. 

 Chlorolampis osberti, Gould, Intr. Troch. p. 174 ; Heine, J. f. Orn. 



1863, p. 200. 

 Chlorostilbou salvini, Frantz. J. f. Orn. 1869, p. 317 ; Berl. Pr. 



U.S. Nat. Mus. xi. p. 564. 

 Chlorostilbou osberti salvini, Nuttinq, Pr. U.S. Nat. Mus. v. 



p. 501. 



Adult male. Eutire upper surface shiniug golden-greeu, glittering 

 ou the crown ; under siu'face glittering green ; tail steel-blue, 

 central rectrices more or less tipped with grey ; bill black at the 

 tip, the base of the maxilla and mandible for most of its length 

 tlesh-colour. Total length about 3'6 inches, wing 1*9, lateral 

 rectrices 1"5, central 0-75, biU 0'75. 



Adult female. Like that of C. auriceps, but larger, with much 

 less deeply forked tail. 



Eastern Mexican specimens, the true C. cmivdi, have, as a 

 rule, a more deeply forked tail than those from Guatemala 

 (C. osberti), but I doubt the possibility of separating these two 

 forms in every case. In the Guatemalan bird the central rectrices 

 have the tip rather less grey, but this is eminently a variable 

 character. Gould's type of 0. osbcrii has hardly any of this colour 

 on these feathers, but in others from the same locality it is very 

 plainly shown. The green tips sometimes seen to these feathers I 

 believe to be due to immaturity, or perhaps only observable in 

 perfectly freshly moulted featliers. One Duenas specimen before 

 me has the left central rectrix tipped with green ou the outer web, 

 whilst the right-hand one is plain. 



Costa-Rican specimens (C. salvini) have a still less deeply forked 

 tail, but the male specimens before me have the grey tips to the 

 median rectrices, moreover the base of the maxUla is less red. I 

 do not, however, think that this bird can be definitely separated 

 from the more northern forms. 



Hah. Eastern Mexico, southwards through Central America to 

 Costa Rica. 



