44 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



[Thamnophilus] doliatus Bonapakte, Consp. Av., i, 1850, 197, part. — Sclater 



and Salvin, Nom. Neotr., 1873, 70, part.— Sharpe, Hand-list, iii, 1901, 15, 



part. 

 Thamnophilus doliatus? Salvin, Proc. Zool. Soc. Lond., 1867, 144 (David, Pan- 



amd). 

 Thamnophiltis affinis (not of Spix, 1825, Lafresnaye and D'Orbigny, 1837, nor 



Cabanis and Heine, 1859) Lawrence, Ann. Lye. N. Y., ix, 1868, 107 (San 



Jose, Sarchi, and San ]\Iateo, Costa Rica). — Salvin, Proc. Zool. Soc. Lond., 



1870, 194 (Bugaba, Panamd; crit.). 

 Thamnophilus doliatus affinis Nutting, Proc. U. S. Nat. Mus., v, Sept. 5, 1882, 



397 (La Palma de Nicoya, Costa Rica; habits). 

 Thamnophilus radiatus (not of Vieillot) Salvin, Proc. Zool. Soc. Lond., 1870, 194 



(Chitra and Calov^vora, Panama). 

 Thamnophilus nigricristatus (not of Lawrence) Boucard, Proc. Zool. Soc. Lend., 



1878, 60 (San Carlos, Costa Rica). 

 Thamnophilus doliatus pacificus Ridgway, Proc. Biol. Soc. Wash., xxi, Oct. 20, 



1908, 193 (Chinandega, Nicaragua; coll. U. S. Nat. Mus.). — Carriker, 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. facificus 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 ^\'^ng•s (sometimes back and tail also) sho\ving more 

 or less distinct indications of dusky bars; averaging larger. 



Adult maZe.— Length (skhis), 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.— L&L\gi\\ (sldns), 155-163 (159); wdng, 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 (Merida; Chichen-Itza; Buctzotz; Peto; Temax; Meco 

 Island; Cozumel Island) and Campeche (Yohaltdn) .*= 



Thamnophilus affinis (not of Spix, 1825, D'Orbigny and Lafresnaye, 1837, nor 

 Cabanis and Heine, 1859) Lawrence, Ann. Lye. N. Y., ix, 1869, 201 (Merida, 

 Yucatan). — Nehrkorn, Journ. flir Orn., 1881, 67 (Yucatan; descr. eggs). 

 Thamnophilus doliatus (not Lanius doliatus Linnaeus) Boucard, Proc. Zool. Soc. 

 Lond., 1883, 450 (Yucatan).— Salvin, Ibis, 1889, 365 (Meco Island, Yuca- 

 tan). — Salvin and Godman, Biol. Centr.-Am., Aves, ii, 1891, 202, part 

 (Merida, Buctzotz, Peto, Meco I., and Cozumel I., Yucatan). 



« Ten specimens. 



& Four specimens. 



c Specimens from Alta Mira and Tampico in Tamaulipas and Vall^s, San Luis 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. mexicanus. 



