BIRDS OF NORTH AND MIDDLE AMERICA. 455 



d. Paler, with anterior under parts much less distinctly olivaceous, usually with 

 little if any olivaceous tinge. (Santa Marta district of Colombia to Bogota ^ 

 and eastward to Orinoco Valley, Venezuela.) 



Momotus subrufescens subrufescens (extralimital).^ 



dd. Darker, with anterior under parts much more distinctly olivaceous. 



e. Paler; back, etc., clear olive-green, abdomen, etc., clear brownish tawny 



(between dresden brown and antique brown, the anterior under parts 



strongly glossed with olive-green. (Eastern Panama to south-central 



Colombia, c) Momotus subrufescens conexus (p. 461). 



ee. Darker; back, etc., dark citrine, abdomen, etc., brussels brown or dull 

 Sudan brown, the anterior under parts very slightly glossed with olive- 

 green. (Southeastern Panama.) 



Momotus subrufescens reconditus (p. 463). 



aa. Pileum cinnamon-rufous or chestnut. 



h. Pileum cinnamon-rufous; black suborbital area bordered beneath by a blue 



patch or broad streak; lores mixed black and brownish. ( Momotus mexicanus.) 



c. Averaging smaller and paler (wing averaging 117 in male, 112 in female; tail 



141.5 in male, 154.8 in female; culmen 35.9 in male, 37 in female). (Middle 



Mexico, from Sinaloa, Topic, and Colima to Mexico and Puebla.) 



Momotus mexicanus mexicanus (p. 463). 



cc. Averaging larger and darker (wing averaging 122.2 in male, 123.2 in female; 



tail averaging 170.8 in male, 176 in female; culmen 42 in male, 41.3 in 



female). (Southwestern Mexico, in States of Guerrero, southern Michoacan, 



Oaxaca, and Chiapas.) Momotus mexicanus saturatus (p. 465). 



bb. Pileum chestnut; black suborbital area bordered beneath by a streak of greenish 

 white; lores uniform black. (Guatemala). . .Momotus castaneiceps (p. 466). 



MOMOTUS CCERULICEPS (Gould). 



BLUE-CROWNED MOTMOT. 



Somewhat like 31. lessonii but crown without any black area (the 

 whole pileum turquoise blue exteriorly, duller, more greenish, blue 

 centrally, light verdigris green anteriorly) . 



Adults (sexes alike). — PUeum dull greenish blue or bluish green, 

 passing into light greenish Gight verdigris to chromium or bice green) 

 on forehead and into bright turquoise blue laterally and posteriorly; 

 lores, extreme anterior portion of forehead, orbital region, and auricu- 

 lar region black, this continued from superciliary region backward 

 beneath lateral and posterior margins of the blue pileum, the auricular 



« Another species, with posterior under parts more greenish than anterior portions 

 (instead of the reverse) is the commoner one in Bogota collections. 



& Momotus subrufescens Sclater, Rev. et Mag. de Zool., v, Nov., 1853, 489 (Santa 

 Marta, Colombia; coll. Brit. Mus.); Shai-pe, Cat. Birds Brit. Mus., xvii, 1892, 321, 

 part, pi. 10, fig. 1 (Santa Marta, Colombia; San Esteban and Puerto Cabello, Vene- 

 zuela?); Sahdn and Godman, Biol. Centr.-Am., Aves, ii, 1895, 459, part (Colombia). — 

 (l)P[nonites] subrufescens Cabanis and Heine, Mus. Hein., ii, 1859, 114 (Cartagena). — 

 {?)Prionites parvirostris Bonaparte, Compt. Rend., xxxviii, 1854, 659 (Cartagena, 

 Colombia). — {?)Momotv^ parvirostris Sclater, Proc. Zool. Soc. Lond., 1857, 260. — 

 (?) Momotus swainsoni (not of Sclater) Sclater and Salvin, Proc. Zool. Soc. Lond., 

 1868, 628 (San Esteban, Venezuela). 



c I am quite unable to distinguish two specimens from Ambalema and Rio Guile, 

 Honda, respectively, from Panama examples. 



