52 Descriptions of New Species of Birds . 



feathers on the sides of a leaden-gray at their hases ; upper part of the 

 abdomen and flanks of a beautiful chestnut-red, the feathers of the flanks 

 speckled with leaden-gray, and marked with transverse spots finely 

 speckled with the same gray ; belly, crissum, and under tail-coverts of a 

 deep velvety-black ; tail very short ; bill with the upper mandible black, 

 the under whitish ; feet leaden-gray ; iris deep brown. 



"Length, Om .20 ; wing, m .13 ; tarsus, 0m .025. 



" This beautiful species, which I met with not long ago for the first 

 time in the mountains of Santa Efigenia, closely resembles C. Massena in 

 the white ornaments on deep black upon the head ; but the size is less, the 

 color of the breast and feet different, etc." 



Habitat : Mountains of Santa Efigenia, Tehuantepec. 



Remarks. In the markings of the head it closely resembles 

 G. Massena, but differs in many particulars or color from that 

 and also the other members of the genus. The different col- 

 oring and markings of the flanks of each species will readily 

 distinguish them, in the new one being " chestnut-red speckled 

 with leaden-gray," and in G. Massena, blackish-plumbeous with 

 round white spots. G. ocellatus has the sides marked with 

 large rufous spots, and G. Sallei has the flanks leaden-gray 

 with chestnut spots and bars. I have conferred Prof. Sunii- 

 chrast's name on this fine species, as a fitting tribute to his 

 efficient aid in the cause of science. 



Since the above was in press, I have received (Nov. 6th) 

 a letter from Prof. Sumichrast 7 in which he says : "I hope to 

 undertake in a few days an expedition to the mountains where 

 I killed the Gyrtonyx. It is a region where no one, either 

 white or Indian, has ever penetrated; and I flatter myself, un- 

 less some accident happens, to find some interesting species." 



