460 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



Prionites inomotits (not Ramphastos momota LinnseuB) Bonapabte, Proc. ZdoI. 



Soc. Lond., 1837, 114 (Guatemala; descr.). 

 Prlionites] psalurus Bonapabte, Compt. Rend., xxxviii, 1854, 659, in text; Notee 



Om. Coll. Dellattre, 1854, 88, in text; (Nicaragua; coll. Paris Mub.). 

 \Prionites'\ psalurus Bonapabte, Ateneo Italiano, ii, 1854, 317 (Consp. Volucr. 



Anisod., 1854, 8). — ^HEiNEand Rbichenow, Nom. Mus. Hein. Om., 1890, 156 



(Costa Rica). 

 Prionites psalurus Cabanis, Joum. fiir Om., 1861, 255 (Costa Rica; crit.). 

 MoTnotus psalurus Sclater, Proc. Zool. Soc. Lond., 1857, 259 (monogr.). 

 MoTuotus suhrvfescens (not of Sclater) Schleqel, Mus. Pays-Bas, iii, no. 19, 1863, 



3, part (Guatemala). — Sharps, Cat. Birds Brit. Mus., xvii, 1892, 321, part 



(Mina de Chorcha, Panama). 



MOMOTUS LESSONn EXIGUUS Ridgway. 



YUCATAN MOTMOT. 



Similar to M. I. lessonii but general color rather lighter and de- 

 cidedly greener, the hindneck always green (concolor with back, etc.), 

 and under parts with tawny wash (if present) confined to chest; 

 averaging decidedly smaller, especially the bUl. 



AduU maZe.— Length (skins), 355-396 (384); wing, 126-132.5 

 (129.6); tail, 207-230 (215.1); exposed culjnen, 36-41.5 (39.2) ; tarsus, 

 25-29 (27); middle toe, 17-18.5 (17.7.)« 



AduU female.— LeQg(k (skins), 362-373 (367); wing, 127-131.5 

 (129.7); tail, 204-212 (207.3); exposed culmen, 38-39.5 (38.7); 

 tarsus, 27.5-29 (28.5); middle toe, 18.5-19.5 (19).* 



Yucatan (M6rida; Temfix; Puerto Morelos; La Vega; Kio Lagartos; 

 Peto; Xbac; Buctzotz) and Campeche (Apazote). 



Momotus lessoni (not M. lessonii Lesson) Lawrence, Ann. Lye. N. Y., ix, 1869, 

 117, 204 (Merida, Yucatan).— Boucard, Proc. Zool. Soc. Loud., 1883, 453 

 (Yucatan; habits). — Shabpe, Cat. Birds Brit. Mus., xvii, 1892, 324, part 

 (Temax, Buctzotz, and Peto, Yucatan). — Salvin and Godman, Biol. Centr.- 

 Am., Aves, ii, 1895, 456, part (Temax, Buctzotz, Peto, and Merida, Yucatan). 



[Momotus] lessoni Sclater and Salvtn, Nom. Av. Neotr., 1873, 102, part. — 

 Shabpe, Hand-list, ii, 1900, 77, part. 



Momotus ■lessonii Cole, Bull. Mus. Comp. Zool., 1, 1906, 146 (Xbac, Yucatan). 



Momotus lessonii eidguu^ Bidsway, Proc. Biol. Soc. Wash., xxv, May 4, 1912, 89 

 (Temax, Yucatan; coll. U. S. Nat. Mus.). 



MOMOTUS LESSONn GOLDMANI Nelson. 



GOLDMAIT'S MOTMOT. 



Similar to M. I. exiguus, but averaging decidedly larger (the bill 

 conspicuously so), under parts still greener (more frequently devoid 

 of tawny wash on chest), and blue nuchal crescent with very little if 

 any (usually wholly mthout) violet-blue posterior margin. 



"' Six specimens. b Three specimens. 



