GALBULA CYANEICOLLIS. 



THE BLUE-NECKED JACAMAE. 

 PLATE VIII. 



Le Jacamar jeune dge, Levaill. Ois. de Par. ii. p. 113, t. 49 (1806)'? 



Galhula cyanicollis, Cassin, Pr. Ac. Sc. Phil. v. p. 154, t. 7(1851). 



Galbula cyanopogon, Cab. in Ersch u. Grub, Enc. sect. 1, lii. p. 308 (1851). 



Galhula cyanicollis, Scl. Contr. Orn. 1852, p. 31, et Syn. Galb. p. 6 (1852). 



Galhula cyanicollis, Cassin, Cat. Hale. p. 17 (1852). 



Galhula cyanicollis, Scl. P. Z. S. 1855, p. 14. 



Galhula cyanicollis, Pelz. Sitz. Ak. Wien, xx. p. 517 (1856). 



Galhula alhirostris, Burm. Syst. Ueb. iii. p. 301 (1856). 



Galhula cyaneicollis, Scl. Cat. A. B. p. 267 (1862). 



Galhula cyanopogon, Cab. et Hein. Mus. Hein. iv. p. 224 (1863). 



Galhula cyanocepJiala, Licht. MS. (test. Cab. et Hein. loc. s. cit.). 



Galhula cyaneicollis, Scl. et Salv. P. Z. S. 1867, p. 582. 



Galhula cyaneicollis, Scl. et Salv. Nomencl. p. 105 (1873). 



Suprk nitide seneo-viridis nitore cupreo perfusa ; alls intiis nigris^ extus (nisi in primariis) dorso concoloribus • 

 pileo toto et colli lateribus pnrpureo-nigris^ in nucli^ et in cervice lateral! cseruleo lavatis; subtiis 

 saturate castanea unicolor; caudse rotundatse rectricibus duabus mediis supra dorso concoloribus 

 subtus obscure viridibus; ceteris rufis^ in pogonio externo seneo-viridi limbatis; subalaribus et 

 , remigum marginibus internis rufis; rostri flavi mandibula; superioris dimidio apicali nigro ; pedibus 

 flavis, unguibus nigris : long, tota 7-8^ alse S'l, caudse 3-1, rostri a rictu 1-8. Fem. mari similis, sed 

 abdomine pallidius rufescente diversa. 



Hab. in Amazonia inferiore. 



The phenomenon of both sexes of a single species of a genus being clothed in the dress worn by 

 the females of the remaining species is, though strange, not unfamiliar to naturalists who make 

 special studies of certain groups. The present bird is an instance of the phenomenon in question. 

 The ordinary point of difference between the sexes among the Jacamars is for the male to 

 present a white patch on the throat, and for the female to be without it. This occurs not only 

 in Galhula generally, but also in certain species of Brachygalha and in JacameT0i[>s. But in the 

 present bird the male has no trace of such a white throat-patch, and has the lower surface of a 

 uniform chestnut-red, from which the female only diverges in its lighter tint of colour. 



It is possible, as suggested by Messrs. Cabanis and Heine, that an individual of this species 

 may have served for the model of Levaillant's figure of "Le Jacamar jeune age" in his account 

 of this group given in the second volume of his ' Oiseaux de Paradis.' But the species was 

 never properly understood until 1851, when Mr. Cassin, in America, and Dr. Cabanis, in Germany, 



