194 Todd, The Genus Eupsychortyx. [April 



Suffice it to say here that I regard E. sonnini as the primitive 

 form. 



Between the views of the latest writer, who would reduce all 

 the described forms of this group to subspecies of E. cristatus, 

 and those of previous authors, who retain them as distinct species, 

 there would seem to be room for a safe and sane arrangement 

 which will better express their real affinities. The results of my 

 study of the group may be expressed in tabular form in the fol- 

 lowing : 



Key to the Species and Subspecies of Eupsychortyx. 

 Based on Adult Males Only. 



A. Breast plain. 



a. Above darker, crest shorter. Eupsychortyx sonnini sonnini. 



a'. Above paler, crest longer. Eupsychortyx sonnini mocquerysi. 



A'. Breast spotted with white. 



a. Superciliary and malar stripes amber brown. 



b. Superciliary stripe without black spots or streaks intermixed, 

 c. White of head more extended, occupying anterior half of 

 throat; breast less heavily spotted with white. 



Eupsychortyx leucopogon leucopogon. 



c'. White of head more restricted, occupying chin, lores, and 



subloral region only; breast more heavily spotted with 



white. Eupsychortyx leucopogon leucotis. 



b'. Superciliary stripe with spots or streaks of black. 



c. Coloration deeper and richer, the breast almost or quite as 

 deeply colored as the throat. 



Eupsychortyx leucopogon decoratus. 

 c'. Coloration duller and paler, the breast conspicuously paler 

 than the throat. Eupsychortyx leucopogon littoralis. 



a'. Superciliary and malar stripes black. 



b. Upper parts darker, more rufescent. 



Eupsychortyx cristatus cristatus. 

 b'. Upper parts paler, more grayish. 



Eupsychortyx cristatus horvathi. 



Eupsychortyx sonnini sonnini (Temminck). 



Plate V, figures 1-2. 



"Coturnix eleganter variegata, & cristata" Barrere, Essai sur l'histoire 

 naturelle de la France equinoxiale. c 1741, 129 (French Guiana; descr., 

 etc.). 



! This title, however, did not appear until the second edition came out in 1749. 



