386 BULLETIN 50, UNITED STATES NATIONAL MUSEUM 



Adult jemale. — Similar to that of the nominate race but with the chin 

 and upper throat whitish with Httle or no vinaceous tinge ; breast paler — 

 pinkish cinnamon with a slight vinaceous-gray wash ; upper abdomen pale 

 buffy white as the middle and lower abdomen ; outer webs of inner sec- 

 ondaries and of upper wing coverts pale, more grayish, less rufescent; 

 superciliary stripe whiter. 



Adult tnale. — Wing 117-121; tail 45-46.5; culmen from base 16.4- 

 18.4; tarsus 31.4-31.6; middle toe without claw 26.1-27.4 mm. (2 

 specimens). 



Adult jemale.— W\x\g 113.5-119.5 (117.3) ; tail 46-49 (47.3) ; culmen 

 from base 16.6-17.3 (17.0) ; tarsus 30.1-30.4 (30.2) ; middle toe without 

 claw 26.4-27.3 (26.8 mm.).'^ 



Range. — Resident in the lowland tropical forests of Yucatan (Chichen 

 Itza, Tizimin, Rato) and Campeche (Apazote). 



Type locality. — Apazote, Campeche, Mexico. 



Odontophorus lineolahis (not of Gould) Nehrkorn, Journ. fiir Orn., 1881, 69 

 (Yucatan; descr. eggs). — Boucard, Proc. Zool. Soc. London, 1883, 460 (Yuca- 

 tan; habits). 



[Strophiortyx] lineolatus Heine and Reichenow, Nom. Mus. Hein. Orn., 1890, 

 295 (Yucatan). 



Dactylortyx ihoracicus sharpei Nelson, Proc. Biol. Soc. Washington, xvi, 1903, 

 152 (Apazote, Campeche; coll. U. S. Nat. Mus.). — Cole, Bull. Mus. Comp. 

 Zool., 1, 1906, 116 (Chichen Itza, Yucatan; f ood ) .—Peters, Check-list Birds 

 World, ii, 1934, 56 (distr.). — Hellmayr and Conover, Cat. Birds Amer., i, 

 No. 1, 1942, 282 (syn.; distr.). 



[Odontophorus] thoracicus (not Ortyx thoracicus Gambel) Sclater and Salvin, 

 Nom. Av. Neotr., 1873, 138, part. 



Dactylortyx thoracicus Ogilvie-Grant, Cat. Birds Brit. Mus., xxii, 1893, 429, part 

 (Tizimin and Peto, Yucatan). — Salvin and Godman, Biol. Centr.-Amer., Aves, 

 iii, 1903, 308, part (Tizimin and Peto, Yucatan). 



[Dactylortyx] thoracicus Sharpe, Hand-list, i, 1899, 46, part (Yucatan). 



DACTYLORTYX THORACICUS CHIAPENSIS Nelson 



Chiapan Long-toed Quail 



Adult male. — Similar to that of the nominate race but with buffy to 

 ochraceous-buff shaft stripes or outer webs on the lateral occipital 

 feathers; the breast, sides, and flanks slightly more rufescent, and with 

 the tarsus considerably longer. 



Adult female. — Similar to that of the nominate race but with the chin 

 and upper throat more whitish, little, if any, tinged with pale vinaceous ; 

 breast slightly more hazel, less tawny ; and tarsus longer. 



Juvenal male. — Similar to that of Dactylortyx thoracicus devius but 

 with the blackish spots on the breast, upper abdomen, and sides larger, 

 the rest of the feathers slightly paler, the shaft stripes wider ; thighs and 

 flanks less rufescent, buffier ; tarsus shorter. 



' Three specimens from Yucatan and Campeche. 



