258 



Crypticus superciliosus, Sw. An. in Men. p. 267 ; Less. Desc. d. 

 Mamm. et Ois. p. 267. 



Crypticus apiaster, Less. R. Z. 1842, p. 174. 



Momotus yucatanensis, Cabot, Pr. N. H. Soc. Boston, iv. 467 ; 

 Gray, Gen. p. 68. sp. 13. 



Priorities yucatanensis, Bp. Consp. p. 165. 



Olivaceus ; do?'so medio, macula post-oculari et ventre imo casta- 

 neis : superciliis latis et maculis subocularibus Icete glauco- 

 cyaneis : vitta per oculos utrinque transeunte nigra : vitta 

 gulari longitudinali nigra, utrinque cyaneo marginata : alis 

 nigris extus cyaneo marginatis : rectricibus subtus nigricanti- 

 bus, supra ccerulescentibus, nigro terminatis : duarum media- 

 rum rachide nuda longissima, apice spatulata. 

 Long, tota 14"0, alse 4*5, caudse 8*0. 



Hab. Central America, Yucatan (Cabot) ; Bay of Campeachy 

 (M. B.) ; Guatimala and Honduras. 



This beautiful bird, with the peculiar incurved bill — the serration 

 of which is confined to the middle of the mandibles — and compara- 

 tively short tail, with the two medial rectrices far projecting and de- 

 nuded to a much greater extent than in other Motmots, seems to 

 present characters quite as distinctive as Hylomanes or Prionirhyn- 

 chus, and I have accordingly proposed for it the new generic name 

 Eumomota. Prince Bonaparte has remarked (Notes Orn. p. 89) 

 that there seems to be two varieties of this bird, one from the western 

 coast of Central America more red, the other from the eastern coast 

 more blue. 



The preceding account embraces all the species of Motmots with 

 which I am acquainted. There are a few others mentioned by 

 authors, concerning which I subjoin the following remarks : — 



1. Le motmot dombe, Levaill. Ois. de Par. i. p. 113. pi. 39. 

 Baryphonus ruficapUlus, Vieill. Nouv. Diet. d'H. N. xxi. p. 315. 

 Prionites dombeyanus, Ranz. Elem. di Zool. iii. pt. 3. p. 158. 

 Momotus dombeyi, Less. Tr. d'Orn. p. 251 ; Less. Man. d'Orn. 

 p. 103. 



Momotus rubricapillus, Steph. Zool. xiv. p. 84. 

 Prionites dombeyi, Sw. Class, ii. p. 338. 

 Momotus ruficapUlus, Gray's Gen. p. 68. sp. 4. 

 Prionites ruficapUlus, Bp.'s Consp. p. 165. sp. 4. 

 Momotus tutu, Less. Descr. d. Mamm. et Ois. p. 265. 



Le Vaillant, upon the authority of whose figure some systematists 

 have formed and others adopted the several scientific names above 

 given, writes as follows concerning this Motmot : — " Whatever may 

 be the case with the second species of Motmot of the older writers, 

 which all nomenclatists have spoken of, but none have seen, here is 

 one well-characterized, and differing from the first in that it has all 

 the top of the head red, and that it has not part of the tail-feathers 

 ebarbed, nor a black spot on the stomach. All is otherwise quite 

 similar in colour between the two species, except that the green of 



