NEW NORTH AMERICAN BIRDS. 93 



Mexico (north to southern Texas?); b. olivascens^ NOBIS, from 

 western Mexico, (southern Mexico, and even Yucatan in winter,) 

 and north to southern Arizona. 



6. M. flammulatus LAWR., from southwestern Mexico (Tehuante- 

 pec to Mazatlan). Several examples of this widely distinct species 

 are in the National Museum collection. 



6. Pedicecetes phasianellus campestris, new subspecies. 

 PRAIRIE SHARP-TAILED GROUSE. 



SUBSPECIFIC CHARACTERS. Differing from P. phasianellus colum- 

 bianus in rather lighter and much more ochraceous coloration 

 above, with the black bars narrower and less regular, and in having 

 the V-shaped markings of the lower parts much less distinct (never 

 deep black). 



Types, Nos. 76,743, $ ad., Illinois, and 19,173, 9 ad., Rose 

 bud Creek, Montana Terr. 



In the Bulletin of the Nuttall Ornithological Club for October, 

 1882, p. 233, Mr. Brewster alludes to differences between specimens 

 of the Sharp-tailed Grouse from Fort Walla Walla, Washington 

 Terr., and others from eastern localities, but concludes that the dif 

 ferences noted "probably have only a local significance." This 

 was formerly my opinion also ; but many additional specimens 

 subsequently received at the National Museum show conclusively 

 that two very different styles of this bird inhabit the regions west 

 and east of the Rocky Mountains, respectively. P. pJiasianellus 

 columbianus is represented in the collection by specimens from 

 Washington Territory, Oregon, Northern California, and Nevada, 

 and P. phasianellus campestris by examples from Montana (east of 

 the mountains), Eastern Wyoming and Colorado, Nebraska, Dakota, 

 and Illinois. 



P. phasianellus campestris is the form described and figured by 

 Audubon, (B. Am., v, p. 112, pi. 298,) under the name Tetrao 



phasianellus. 



ii 



