1^11] Grinnell: New Spotted Towhce. 311 



white on outer web 16.5 from tip, on inner web, 24 from tip; 

 third rectrix with white patch on inner web, 15mm. long; bill 

 black ; feet dull flesh color ; claws blackish ; tarsus 28 mm. ; middle 

 toe and claw, 25; hind toe and claw, 18.5; culmen, 12.9; bill 

 from nostril, 10 ; gonys, 9 ; depth of bill at base, 8.6 ; wing, 86.4 ; 

 tail, 96.4. 



Remarks. — The above description should be compared in 

 detail with the original account of P. m. montamis, in which are 

 also given comparative measurements of series of the various 

 forms (see H. S. Swarth, 1905, p. 173). The very much shorter 

 tail and wing of curtatus is alone sufficient ground for its recog- 

 nition as separate from montanv.s. It is proper to state that 

 these differences are exhibited in the table of measurements of 

 towhees from different localities given by Ridgway (1901, p. 

 416). The large extent of the white markings and the much 

 shorter hind toe and claw readily distinguish curtatus from 

 megalonyx. P. m. montanus is, according to Swarth (1905, p. 

 173), permanently resident in the high mountains of Arizona 

 and New IMexico. P. m. curtatus is evidently a migratory form 

 of rather sparse distribution in the west central portion of the 

 Great Basin region, north probably into eastern Washington. 

 The specimens at hand, as shown in the above statement of 

 range, agree closely in essential characters, sex considered, with 

 the description of the type. 



LITERATURE CITED 



ElDGWAY, R. 



1901. The birds of North and Middle America. Bull. U. S. Nat. Mus., 

 no. 50, XXX, 715, 20 pis. 



Swarth, H. S. 



1905. Atratus versus mec/olonyx. Condor, 7, pp. 171-174, 1 text fig. 



