44 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 
[Thamnophilus] doliatus Bonaparte, Consp. Av., i, 1850, 197, part.—-ScLaTER 
and Satvin, Nom. Neotr., 1873, 70, part.—_Suarpz, Hand-list, iii, 1901, 15, 
part. 
Thamnophilus doliatus? Savin, Proc. Zool. Soc. Lond., 1867, 144 (David, Pan- 
amé). 
Thamnophilus affinis (not of Spix, 1825, Lafresnaye and D’Orbigny, 1837, nor 
Cabanis and Heine, 1859) Lawrence, Ann. Lyc. N. Y., ix, 1868, 107 (San 
José, Sarchi, and San Mateo, Costa Rica).—Satvin, Proc. Zool. Soc. Lond., 
1870, 194 (Bugaba, Panama; crit.). 
Thamnophilus doliatus affinis Nurtine, Proc. U. 8S. Nat. Mus., v, Sept. 5, 1882, 
397 (La Palma de Nicoya, Costa Rica; habits). 
Thamnophilus radiatus (not of Vieillot) Satvin, Proc. Zool. Soc. Lond., 1870, 194 
(Chitra and Calovévora, Panama). 
Thamnophilus nigricristatus (not of Lawrence) BoucarD, Proc. Zool. Soc. Lond., 
1878, 60 (San Carlos, Costa Rica). 
Thamnophilus doliatus pacificus Ripaway, Proc. Biol. Soc. Wash., xxi, Oct. 20, 
1908, 193 (Chinandega, Nicaragua; coll. U. S. Nat. Mus.).—Carrixer, Ann, 
Carnegie Mus., vi, 1910, 604 (Pacific lowlands and lower slopes, rarely to 
3,500 ft., Costa Rica; habits). 
THAMNOPHILUS DOLIATUS YUCATANENSIS Ridgway. 
YUCATAN ANTSHRIKE. 
Similar to T. d. pacificus but adult male with black bars on under 
parts usually narrower; adult female similar to that of T. d. pacificus 
but upper parts (except pileum) averaging more ochraceous (less 
rufescent), with wings (sometimes back and tail also) showing more 
or less distinct indications of dusky bars; averaging larger. 
Adult male—Length (skins), 146-162 (157); wing, 69.5-75.5 
(72.1); tail, 60.5-65 (63.2); culmen, 18.5-20 (19.1); tarsus, 24-27 
(26.2); middle toe, 14-16 (15.2).¢ 
Adult female—Length (skins), 155-163 (159); wing, 69-73.5 (71); 
tail, 62-67.5 (64); culmen, 19-20 (19.6); tarsus, 26.5-27.5 (27); 
middle toe, 15-16 (15.7).° 
Yucatan (Mérida; Chichen-Itza; Buctzotz; Peto; Temaéx; Meco 
Island; Cozumél Island) and Campeche (Yohaltén).¢ 
Thamnophilus afinis (not of Spix, 1825, D’Orbigny and Lafresnaye, 1837, nor 
Cabanis and Heine, 1859) Lawrence, Ann. Lyc. N. Y., ix, 1869, 201 (Mérida, 
Yucatan).—_Nzurxorn, Journ. fiir Orn., 1881, 67 (Yucatan; descr. eggs). 
Thamnophilus doliatus (not Lanius doliatus Linneus) Boucarp, Proc. Zool. Soc. 
Lond., 1883, 450 (Yucatan).—Satvin, Ibis, 1889, 365 (Meco Island, Yuca- 
tan).—Satvin and Gopman, Biol. Centr.-Am., Aves, ii, 1891, 202, part 
(Mérida, Buctzotz, Peto, Meco I., and Cozumél I., Yucatan). 
a Ten specimens. 
b Four specimens. 
¢ Specimens from Alta Mira and Tampico in Tamaulipas and Vallés, San Lufs Potosf, 
come very near to the Yucatan form in coloration, and it is possible the latter may 
extend thus far northward along the narrow arid coast-belt. Specimens from Frontera, 
Tabasco, are intermediate in coloration between T. d. yucatanensis and T. d. mevicanus. 
