CETPTUEUS. 457 



4. Crypturus boucardi. 



Tinamus boucardi, Scl. P. Z. S. 1859, p. 391 ' ; Sumichr. La Nat. v. p. 229'. 



Crypturus boucardi, Salv. Ibis, 1870, p. 115'; Scl. & Salv. P. Z. S. 1870, p. 838*; Boucard, 



P. Z. S. 1878, p. 41 = ; Zeledon, An. Mus. Costa Rica, p. 128 ' ; Salvad. Cat. Birds Brit. Mus. 



xxvii. p. 544'; Underwood, Ibis, 1896, p. 449'. 

 Nothocercus boucardi, Heine & Reichenow, Nomencl. Mus. Hein. p. 304'. 

 Tinamus salltsi (nee Bp.), Salv. Ibis, 1861, p. 356 '". 

 Crypturus sp., Richmond^ Pr. U. S. Nat. Mus. xvi. p. 526 ". 



Supra rufescenti-brunneus, plumis singulis fusco indistinote marginafcis ; pileo sordide schiataceo ; collo postico 

 et lateral! cum interscapulio toto saturate plumbeis ; tecfcricibus alarum cinerasoenti-brunneis, medianis 

 indistinote arenario fcerminatis, majoribus ochraceo apicatis et nigro subterminaliter notatis; remigibus 

 fuscescenti-cinerascenti-brunneis ; secundariis intimis dorso concoloribus, exteiioribus sordide arenario 

 marinoratis : subtus plumbescenti-oinereus, mento albicante ; abdomine medio isabellino ; hypoohondriis 

 imis et subeaudalibus ochraceo nigroque transf aseiatis ; subalaribus plumbeis ; alls intus cineraceis. Long, 

 tota circa 10*0, alae 6"6, caudae 1'7, culm. 1"15, tarsi 2*0. (Descr. exempl. typ. maris adulti ex Teotalcingo. 

 Mus. nostr.) 



5 . Supra marmoratus, dorso chocolatino, interscapulio concolore, sed dorso postico, uropygio et supracaudalibus 

 nigro et ochracescenti-fulvo transf as.ciatis, his magis conspicue notatis ; tectricibus alarum et secundariis 

 extus ochracescenti-fulvo crebre fasciatis. Long, tota circa 10*5, alse 6-9. (Descr. feminae adultse ex Eio 

 Coco. Mus. nostr.) 



Hub. S. Mexico, Vera Cruz, Playa Vicente, Teotalcingo [Boucard ^ ''), Uvera (Sumi- 

 chrast ^), Chimalapa, Tehuantepec {Eichardson '^) ; British Honduras (Blanc- 

 aneaux''); Guatemala 9, Chisec 1°, Choctum'^ (0. S.); Hondukas, San Pedro 

 {Whitely '^) ; Nicakagua, Eio Escondido (Eichmond ^^), Eio Coco (Eichardson); 

 Costa Eica^, San Carlos (Boucard^), Pacuare (Zeledon^), Miravalles (Under- 

 wood ^). 



The uniformly grey throat and breast, combined with the leaden-black colour of the 

 head and neck, serve to distinguish this Tinamou. The upper part of the throat is 

 light grey in the typical bird from Mexico, but is decidedly whiter in those from 

 Nicaragua. 



A specimen from Miravalles, Costa Eica, is quite as dark as the Mexican examples, 

 but has a slightly whiter throat. It is therefore somewhat intermediate, resembling 

 in this respect one of our Chisec skins. The two palest birds are from British 

 Honduras, but, judging from our series, every gradation of tint is illustrated, and we 

 can scarcely believe in the existence of any distinct races. M. Boucard found this 

 Tinamou abundant near San Carlos, in Costa Eica, in February. The flesh is described 

 as white and of excellent flavour. 



5. Crypturus mexicanus. (Tab. LXXIX. figg. l, d ; 2, s .) 



Crypturus mexicanus, Salvad. Cat. Birds Brit. Mus. xxvii. p. 545 ^ ; Richmond, Pr. U. S. Nat. Mus. 



xviii. p. 627 ' ; Nelson, Auk, xvii. p. 254 '. 

 C. boucardi similis, sed subtus pallidior, dorso postico, scapularibus, supracaudalibus et secundariis intimis 

 regulariter nigro transfasciatis ; gula alba; gutture imo schistaceo ; corpore reliquo subtus ochracesoenti- 



BioL. cbktb.-amek., Aves, Vol. III., A^ril 1904. 58 



