4. MOMOTUS. 321 



Adult. Similar to M. momota, but instead of having a chest- 

 nut patch on the hind nock, the whole of the latter is chestnut 

 and this colour overspreads the upper mantle ; under surface of 

 body rufesceut. Total length 16 inches, culmen 1-7, wing 5, tail 6, 

 centre tail-feathers 9, tarsus l-l. 



Ifab. From Colombia to the Peruvian Amazons *. 



a. 2 ad. sk. Upper Ucayali {E. Bartlett). Sclater Coll. 



b. Ad. sk. Bogota. Sclater CoU. (One of 



the types oi M. 7nicrostep/ianus.) 



3. Momotus subrufescens. (Plate X, fig. 1.) 



Momotus subrufescens, Scl. Rev. Zool. 1853, p. 489 ; id. P. Z. S. 



1857, p. 252 (Santa Marta) ; id. Cat. Amer. B. p. 261 (1862; 



Santa Marta) ; Laivr. Ann. Lye. N. Y. vii. p. 318 (1862) ; Schl. 



Mus. Pays-Bas, Momotus, p. 3 (1863) ; Gray, Hand-l. B. i. p. 79, 



no. 931 (1869) ; Murie, IMg, 1872, p. 401 ; Scl. ^- Sale. Nomencl. 



Av. Neotr. p. l02 (1873 ; Colombia to Panama) ; Salvin ^- Godman, 



Ibis, 1880, p. 174 (Santa Marta). 

 ? Prionites parvirostris, Bp. C. R. xxxviii. p. 659 (1854) ; id. C'otisp. 



Volucr. Anis. p. 8 (1854). 

 Prionites subrufescens, Bp. Coyisp. Volucr. Anis. p. 8 (1854) ; Cab. 



4- Ifeine, Mus. Hein. Th. ii. p. 114 (1860). 

 Momotus swainsoni {7iec Scl, 1862), Scl. 4" Salv. P. Z. S. 1868, 



p. 628 (San Esteban). 



Adult female. Similar to M. momota, but smaller, the band 

 on the crown silvery cobalt, becoming purplish cobalt on the 

 nuchal cincture ; the hind neck and sides of neck chestnut, over- 

 spreading the mantle ; the green of the upper surface and tail 

 lighter and more ochraceoits than in M. brasiliensis ; under surface 

 of body cinnamon-rufous, not green, but showing a little green on 

 the throat : "iris rich brownish red" {F. I^imons). Total length 

 15-5 inches, culmen 1-7, wing 5, tail 5-8, centre tail-feathers 9-3, 

 tarsus 1-05. 



The Venezuelan specimens differ from those from Santa Marta 

 in having the posterior margin of the black crown nearly pure 

 ultramarine-blue. They may prove to be a distinct species and 

 may be called Momotus Venezuela'. The Bogota and Panama 

 specimens agree with the typical forms from Santa Marta, as do 

 also those from Matto G rosso, but some of the latter seem to be 

 slightly intermediate. 



Hab. From Panama to Colombia and Venezuela, south to Matto 

 Grosso. 



a. Ad. sk. Mina de Chorcha, Chiriqui Sclater Coll. 



{E. Arce). 



b, c. Ad. sk. Chepo, Isthmus of Panama, Salvin-Godman Coll. 



Nov. {E. Arce). 

 d,e. cJ $ ad. sk. Panama {J. McLeannan). Salvin-Godman Coll. 



f,g.Kd..&k. U.S.Colombia. Gould Coll. 



* I expected that this new species would have proved identical with M. brasi- 

 liensis ignohilis of Berlepsch (J. f. O. 18S9, p. 308") ; but this cannot be the case, 

 as the greener under surface is a marked character of the latter bird, A speci- 

 men from Para (Wallace) may belong to M. ignohilis. 



VOL. XVII. T 



