150 MR. O. SALMN ON THE BIRDS OF VERAGUA. [Jail. 24, 



-Vl38. Chiroxiphia lanceolata, Wagl. ; Scl. Si Salv. P. Z. S. 

 1864, p. 362. 



Chiroxiphia melanocephaht, Scl. P. Z. S. 18.56, p. 141. 



Santa Fo ; David {Bridges). 



The purely Central American species (C. linearis, Bp.) terminates 

 its southern range between the Gulf of Nicoya and Chiriqui.. 



— 139. Chasmorhynchus tricarunculatus, J. & E. Verreaux, 

 R. Z. 1853, p. 193; Salvin, Ibis, 1865, p, 90, pi. 3. 



Santiago de Veragua ; Cordillera de Tole. 



Adult male specimens having been sent by Arce, the question 

 broached by Cabanis as to the possibility of the Costa Rican and 

 Veraguan birds being distinct is quite set at rest. These specimens 

 in no way differ from those previously sent by Arce from Tucurriqui. 



-f-HO. CEPHALOPTERrs Gi.ABRicoLLis, Gould, P. Z. S. 1850, 

 p. 92, pi. XX. ; Cab. J. f. O. 1861, p. 254 ; Sclater, P. Z. S. 1859, 

 p. 142. 



Cordillera de Tole ; Cordillera of Chiriqui {^JFarszewicz). 



This strange bird appears to be abundant in this locality, and also 

 near Turrialba in Costa Riea. Its probable range hardly extends 

 beyond these points, though it may occur along the northern fron- 

 tier of Costa Rica, the river San Juan, and the southern shore of the 

 lake of Nicaragua. Judging from the apparently sharp definition 

 of its southern range, I should suppose it a bird that frequents the 

 mountainous region and keeps to forests lying at an elevation of 

 from 2000 to 3000 feet above the sea-level. Arce has sent home 

 sj)ecimens of both sexes. The female has the crest smaller, as is 

 the case in C. ornatiis, the naked throat-lappet much smaller, and a 

 narrow band of small feathers running down the centre of the bare 

 throat. The head of the young bird very much resembles that of the 

 adult of Pi/roderi(s, to which genus Cej)hcdopterus is closely allied. 



-;-141. ^loMOTUS LESSONi, Lcss. ; Sclater, P. Z. S. 1856, p. 139; 

 Lawr. Ann. N. Y. Lye. viii. p. 177. 



Mvniofi's psuh'riis, 13p. ; Cab. J. f. O. 1861, p. 255. 



Cordillera de Tole ; David {Bridges; Hicks). 



An immature specimen, having a black margin to the back of the 

 blue circlet of the head and without the chestnut nape, must indubi- 

 tably be referred to the Central American Momotus lessoni. The 

 snecimcns examined by us, and mentioned in Mr. Sclater's and my 

 paper ''on the Birds of Panama" (P. Z. S. 1864, p. 362) as M. les- 

 soni, properly belong to M. sabrvfescens, Scl., as additional speci- 

 mens have shown. This last-named race has no black border to the 

 back of the circlet of the head, the nape being slightly chestnut as 

 in M. brasilieiisis. The colouring, too, of the under plumage is of a 

 clearer rufous than is usually the case in 3/. lessoni, in which race, 

 however, considerable variation is shown in this respect. It is pro- 

 bable that the southern range of the true M. lessdni terminates in 



