o 
508 PHASIANIDA. 
1. Dactylortyx thoracicus. 
Ortyx thoracicus, Gambel, Pr. Ac. Philad. iv. p. 77°. 
Odontophorus thoracicus, Scl. P. Z. S. 1856, p- 310°; 1859, p. 869°; Salv. & Scl. Ibis, 1860, 
p. 276%. 
Dactylortyx thoracicus, Grant, Cat. Birds Brit. Mus. xxii. p- 429°; Handb. Game-Birds, ii. p. 150°; 
Ibis, 1902, p. 2427; Nelson, Pr. Biol. Soc. Washington, xii. pp. 64, 65 °. 
Odontuphorus lineolatus, Gould, Monogr. Odontoph, t. 32°; Boucard, P. Z. S. 1883, p. 460°. 
Dactylortyx thoracicus lineolatus, Nelson, loc. cit. pp. 64, 66”. 
Dactylortyx chiapensis, Nelson, loc. cit. pp. 64, 66”. 
Dactylortyx devius, Nelson, loc. cit. pp. 65, 68 ™. 
2 pileo brunneo, vertice cristato paullo nigro notato, nucha et collo postico et laterali rufescentibus, plumis 
nonnullis medialiter ochraceo nigro-marginato sagittatim notatis ; interscapulio brunnescentiore ; dorso 
et supracaudalibus magis olivaceo-brunneis, nigro plus minusve distincte fasciatis vel maculatis et fusco 
minutissime irroratis ; scapularibus et tectricibus alarum maculis vel fasciis magnis velutino-nigris ornatis 
et medialiter ochraceo fulvo striolatis, striis apicem versus triangulatim paullo spatulatis ; remigibus et 
rectricibus sepiariis, extus paullo ochraceo variegatis ; secundariis intimis intus late ochraceo marginatis ; 
loris, supercilio et facie laterali schistaceo-cinereis ; regione parotica saturate brunnea ; fascia superciliari 
ad fasciam ochraceo maculatam infra nigram ad colli latera positam producta ; gula alba; colli lateribus 
et corpore reliquo subtus castaneis, pectore medio pallidiore rufo et maculis paucis nigris plus minusve 
celatis variis ; plumis plerisque et pracipue hypochondriis stria mediana fulva ornatis ; abdomine albido ; 
hypochondriis imis fulvescentibus, subcaudalibus rufis, omnibus nigro vel fusco fasciatis; ala infra cineras- 
cente. Long. tota circa 8-0, ale 5-2, caude 1°65, culm. 0:65, tarsi 1°35. (Descr. femine adulte ex 
Hacienda de los Atlixcos. Mus. nostr.) 
3 ad. @ similis, sed scapularibus et tectricibus alarum clarius griseo adumbratis et latius albo striatis, gutture 
et facie laterali cum supercilio lato aurantiaco-rufis ; gutture imo et corpore reliquo subtus cineraceo- 
brunneis, plumis distincte albo medialiter striatis ; hypochondriis imis et subcaudalibus ochraceo-fulvis, 
nigro basaliter maculatis, Long. tota circa 9-0, ale 5-2. (Descr. maris adulti ex Volcan de Fuego. Mus. 
nostr. ) 
Hab. Muxico>*, Hacienda de Los Atlixcos (F. D. G. °), Cordova (Sallé?*), Jalapa 
(Pease', De Oca*), Sierra Madre del Sur, Omilteme 8000 feet, Atoyac (H. H. 
Smith*), Santa Efigenia, Tehuantepec (Sumichrast ‘1), forests of San Sebastian, 
Western Jalisco !%, San Cristobal, Chiapas ? (Nelson & Goldman), Tizimin and 
Peto, Yucatan (Gaumer?1°); Guaremata ®, Santa Maria (Nelson & Goldman i), 
Volcan de Fuego *, Quezaltenango and Duefias® (0. S.); Satvapor, Volcan de 
San Miguel (Richardson *). 
Mr. Nelson recognizes four races of Dactylortyx thoracicus, as follows:—true 
D. thoracicus (Gambel), from the mountains of Eastern Mexico ; D. thoracicus lineolatus 
(Gould), from the mountains of South-western Oaxaca and the adjacent part of 
Chiapas ; D. chiapensis, from San Cristobal, Chiapas, and the Volcan de Santa Maria, 
Guatemala; and, lastly, D. devius, from the forests of J alisco, and probably other parts 
of Western Mexico. 
There is a certain amount of variation observable in the colour of the breast, both in 
males and females, and also in the width of the light shaft-streaks on the under 
surface. We have a good series of skins from Guatemala, but our Mexican material 
