Owls. 
373f. Mexican Screech Owl (M. a.  cineraceus). 
A gray color phase only. Similar to No. 373b, but 
much grayer above; buff markings of No..373b almost 
wholly absent; below black bars more numerous and 
narrower than in No. 373b. 
Range.—'‘New Mexico, Arizona, Lower California, and western 
Mexico.”’ (A. O. U.) 
373g. Aiken Screech Owl (M. a. aikeni). A gray 
color phase only. W.6.5. Similar to 373f, but still 
grayer; almost no buff above; black markings wider on 
head, back, and underparts. 
Range.—'Plains, El Paso County, Colorado, south probably to 
central New Mexico and northeastern Arizona.”’. (A. O. oly 
373h. MacFarlane Screech Owl (M. a. macfarlanet). 
-A gray color phase only. Ads. Ofthe size of zenni- 
cotta’, but with colorand markings of bendired. W. 7.2; 
T. 3.8. (Brewst.) 
Range.—''Eastern Washington and Oregon to western Montana 
and probably intermediate regions, and north to the interior of 
British Columbia.’’ (Bailey.) 
373.1. Spotted Screech Qwl (Megascops trichopsts). 
L. 7.7. Ads. Above mixed black, grayish brown and 
buff; black prevailing on head; feathers of foreback 
with buffy white spots on either side near the end; 
below much as in No. 373f. 
Range.—Southern Arizona and southward into northern Mexico, 
373.2. Xantus Screech Owl (Megascops xantusi). 
W. 5.3. Ad... Above drab, back tinged with. pink- 
ish rusty and faintly vermiculated with reddish brown; 
breast) paler ashy faintly suffused with pinkish or 
rusty; belly whitish: underparts finely barred with red- 
dish brown and streaked with clove-brown. (Brewst.) 
Range.—Cape Region of Lower California. 
374, Flammulated Screech Owl (Megascops flam- 
meola). L. 7. Ads. Ear-tufts small; eye surrounded 
by rusty, then by gray; crown, nape and tips of scap- 
ulars largely rusty; neck band rusty. (See p. 141.) 
Range.—Mountains of Guatemala north to Colorado (11 speci- 
mens, 7 from Boulder County, Cook), west rarely to California (z 
specimens). 
374a. Dwarf Screech Owl (M. f. cdahoens’s). Sim- 
ilar to No. 374, but slightly smaller and paler, es- 
pecially on underparts where ground color is white and 
black markings are restricted. 
Range.—Idaho, eastern Oregon and California (San Bernardino 
Mountains, 3 specimens, Grinnell). 
142 
