29. CHASMOKHTSTCflUS. 403 



29. CHASMOKHYNCHUS. 



Type. 



Casniorhynckos, Temm. Man. cTOrn. Analyse, p. lxiii 



(1820) C. variegatus. 



Arapunga, Less. Trait. d'Orn. p. 365 (1831) C. nudicollis. 



Eulopogon, Gloger, Hand- u. Hilfsb. Nat. p. 321 (1842). C. variegatus. 



Chasmorhynchus is certainly one of the most extraordinary forms 

 of the Cotingidce. Though the females of the four species are much 

 alike, the males present very striking differential characters, both 

 in colour and in the disposition of the naked caruncles which 

 ornament the head and throat. They are further remarkable for 

 their loud bell-like voice. 



The four species of this genus are distributed over the Neotropical 

 Region from Costa Rica, through Venezuela and Guiana, to S.E. 

 Brazil, but, strangely enough, the form does not appear to occur in 

 Amazonia *. 



Key to the Sjjecies. 



A. White above and beneath. 



I Throat feathered; head with a feathered 



I caruncle 1. niveus, p. 403. 



I Throat naked ; head without a caruncle . . 2. nudicollis, p. 404. 



B. White : head brown ; wings black 3. variegatus, p. 405. 



C. Chestnut : head and throat white ; head with 



three naked caruncles 4. tricarunculatus, 



[p. 405. 



1. Chasinorhynchus niveus. 



Cotinga blanc de Cayenne, Daub. PL Enl. 793, 704. 



Ampelis nivea, Bodd. Table, d. PL Enl. p. 49 (1783). 



Anipelis carunculata, Gm. S. N. i. p. 841 ; Lath. G. H. v. p. 180. 



Chasmorhynchus carunculatus, Temm. Tahl. Meth. p. 21 ; Cab. in 



Schomb. Guian. iii. p. 692; Bp. Consp. i. p. 178. 

 Procnias nivea, Gray, Gen. B. i. p. 280 ; Leotaud, Ois. Trin. p. 261. 

 Chasmorhynchus niveus, Cab. et Hein. Mas. Hem. ii. p. 108; Scl. 



Cat. A. B. p. 258: Taylor, Ibis, 1804, p. 88 (Trinidad) ; Salv. Ibis, 



1885, p. 306 (Brit. Guiana); Pelz. Orn. Bras.y. 134; Scl. et Salv. 



P. Z. S. 1867, p. 580 (L. Amazons) ; iid. Komencl. p. 59 ; Finsch, 



P. Z. S. 1870, p. 574 (Trinidad). 

 Chasmorhynchus albus, Scl. Ibis, 1866, p. 407 (en-.). 

 Carunculated Chatterer, Lath. G. H. v. p. 180, pi. lxxxiv. 



Snow-white ; head with a long thinly-feathered caruncle arising 

 from the front ; bill and feet black : whole length 10-5 inches, 

 wing 6-5, tail 4. Female. Above green : beneath yellowish, varie- 

 gated with green ; crissum yellowish. 



Hab. Cayenne, Surinam, and Guiana. 



a. r? ad. st. Cayenne. H. C. Rothery, Esq. 



b. cJ ad. st. Cayenne. Purchased. 



* On the distribution of Chasmorhynehus, of. Sclater, "The Bell-birds of 

 America," Intellectual Observer, x. p. 401 (1867). 



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