Vol. XIX, pp. 93-94 June 4, 1906 



PROCEEDINGS 



OF THE 



BIOLOGICAL SOCIETY OF WASHINGTON 



DESCRIPTION OF A NEW QUERQUEDULA. 

 BY HARRY C. OBERIIOL'^ER. 



A single specimen of a teal from Lake Titicaca, Pern, some 

 time since acquired Ijy the United States National Museum, ap- 

 pears to l>elong to an undescril^ed species which may be called 



Querquedula orinomus sp. iiov. 



Chars, sp. — Similar to Qnerqufdahi cn<in(>}'ter<i, but very much larp;er ; 

 rump and upper tail-coverts considerably barred with buff or ochraceous ; 

 chin without a trace of blackish. (In Querquedula ci^nnopiera the chin is 

 rarely, if ever, entirely without a suffusion of blackish, and usually has 

 much of this ; the rump and upper tail-coverts have little if any indica- 

 tion of light bars, sometimes none.) 



Description.— Type, adult male, No. 150,110, U. S.N. M.; Puna, Lake 

 Titicaca, Peru ; altitude 12,550 feet; A. J. Norris. Head, neck all around, 

 upper back, scapulars, and all the lower parts excepting the under tail- 

 coverts rich reil brown, between chestnut and burnt sienna, duller on the 

 abdomen ; center of crown and forehead black, the upper back, scapulars, 

 and flanks spotted and irregularly barred with black; back, rump, and 

 upper tail-coverts olive brown, rather lighter on the upper tail-coverts, and 

 everywhere with broad edgings and irregularly crescentic, often imperfect, 

 bars of paler on at least the termi nal portion of the feathers, these bars broad 

 and chestnut or rufous on middle back, almost obsolete or reduced to me- 

 dian spots on upper rump and lower back, narrow and buff or ochraceous 

 on lower rump and superior tail-coverts; central tail-feathers olive brown, 

 the others fuscous, and all narrowly margined externally with huffy, 

 the outermost with ochraceous; lower tail-coverts brownish black with a 

 purplish tinge and somewhat mixed with chestnut; primary quills and 

 primary coverts fuscous with a greenish sheen on exposed portions; sec- 

 ondaries fuscous narrowly tipped with whitish, their exposed portions (the 

 distal part of outer webs) bright metallic grass green; greater-coverts with 

 a wide terminal band of white; lesser and median coverts light grayish 

 blue ; lining of wing grayish brown externally, pure white internally. 



This giant edition of Qaerqnedida cijnnoptern apparently represents that 

 species in the region about Lake Titicaca, if not also throughout the Andean 

 plateau, to which, however, it is probably confined. It needs comparison 

 21— Proc. Bioi,. Soc. Wash., Vol. XIX, 190G. (93) 



