ava, 810
feet, on June 15, 1952. Dickerman saw one 4 mi. N San Isidro on May 10,
1954. Miller, Friedmann, Griscom, and Moore (1957:69) recorded this
flycatcher from Sabinas on April 12. No other records of _Muscivora
forficata_ in Coahuila have come to my attention, but the species
probably occurs in the State in migration.

*_Myiarchus crinitus crinitus_ (Linnaeus).--_Specimens examined:_ total
3: [Female] 32065 from 12 mi. N, 12 mi. W Jimenez, 850 ft., June 19,
1952; and [Male] 32066 and [Female] 32067 from 2 mi. W Jimenez, 850
ft., June 20, 1952.

The Great Crested Flycatcher seems to be rare in Coahuila. Nos.
32065-32067 are the first specimens that I know of from Coahuila. Bangs
(1898:179-180) said that the subspecies _crinitus_ has an "enormous
swollen bill" (exposed culmen of male, 20 mm.; breadth of bill at
middle of nostril, 10.3 mm.) whereas _M. c. boreus_ has a "small
slender bill" (exposed culmen of male, 18.6 mm.; breadth of bill at
middle of nostril, 8.6 mm.). No. 32066 has a large bill (exposed
culmen, 21 mm.; breadth of bill at middle of nostril, 10 mm.). Bangs
(_loc. cit._) did not give any measurements for females of _M. c.
crinitus_ or _boreus_. Nevertheless, I suspect that Nos. 32065 and
32067 represent _crinitus_ (No. 32065: exposed culmen, 19 mm.; breadth
of bill at middle of nostril, 9 mm.; No. 32067: exposed culmen, 20 mm.;
breadth of bill at middle of nostril, 9.5 mm.). The size of the testes
(9 mm. long) of No. 32066 and the dates (June 19 and 20) on which the
specimens were collected indicate breeding by this species in the
State.

*_Myiarchus tyrannulus cooperi_ Baird.--_Specimens examined:_ total 2:
[Male] 32068 and [Female] 32069 from 2 mi. S, 3 mi. E San Juan de
Sabinas, 1160 ft., June 22, 1952, measurements: wing, 102, 97 mm.;
tail, 93, 90 mm.

Wied's Crested Flycatcher is not common in Coahuila. Eastern Coahuila
represents the eastern limit of the range of _M. t. cooperi_.
Measurements of our specimens agree well with the average measurements
of typical _M. t. cooperi_. According to Ridgway (1907:621), _M. t.
cooperi_ (then called _Myiarchus mexicanus mexicanus_) has been
recorded from Sabinas. The size of the testes (14x7 mm.) of No. 32068
and the date (June 22) on which the specimens were collected indicate
breeding by this species in the State.

*_Myiarchus cinerascens cinerascens_ (Lawrence).--_Specimens examined:_
total 7: [Female] 31045 from 15 mi. SE Boquillas, 1500 ft., Ma