122 U. S. NATIONAL MUSEUM BULLETIN 205 



garded by Hershkovitz (Proc. U. S. Nat. Mus., vol. 98, p. 408, May 10, 1940) as 



the night monkey of the Colombian highlands and identical with Aotus trivirgatus 



lemurinus. 



Aotus zonalis Goldman t* 



1914. Aotus zonalis Goldman, Smithsonian Misc. Coll., vol. 63, No. 5, p. 6, 

 March 14, 1914. (Regarded as identical with Aotus trivirgatus griseimem- 

 bra by Hershkovitz, Proc. U. S. Nat. Mus., vol. 98, p. 404, May 10, 1949.) 



Type Locality. — Gatun, Canal Zone, Panama. Altitude, 100 feet. Range. — 

 Canal Zone and eastern Panama (Goldman, Smithsonian Misc. Coll., vol. 69, 

 No. 5, p. 225, Apr. 26, 1920) . 



Subfamily alouattinae (howlers) 



Genus ALOUATTA " Lacepede 

 1799. Alouatta Lacepede, Tableau des divisions, sous-divisions, ordres et 

 genres des mammiferes, p. 4. (Published as a supplement to Discours 

 d'ouverture et de cloture du cours d'histoire naturelle .... Type, Simla 

 belzebub Linnaeus.) 



Alouatta pallia I a palliata (Gray)* 



1849. Mycetes palllatus Gray, Proc. Zool. Soc. London, 1848, pt. 16, p. 138, 



June 1, 1849. 

 1863. Aluatta palliata Slack, Proc. Acad. Nat. Sci. Philadelphia, vol. 15 



(1862), p. 519. 

 1884. Mycetes palliatus True, Proc. U. S. Nat. Mus., vol. 7 (App., Circ. 29), 



p. 611, Nov. 29, 1884. 

 1897. [Alouata] palliata Trouessart, Catalogus Mammalium . . . , fasc. 1, 



p. 34. 

 1908. Alouatta palliata matagalpae J. A. Allen, Bull. Amer. Mus. Nat. Hist., 

 vol. 24, p. 670, Oct. 13, 1908. (Lavala, Matagalpa, Nicaragua. For status 

 see J. A. Allen, Bull. Amer. Mus. Nat. Hist., vol. 28, p. 114, Apr. 30, 1910.) 

 Type Locality. — Lake Nicaragua. (Not Caracas, Venezuela. See Sclater, 

 Proc. Zool. Soc. London, 1872, pt. 1, pp. 7-8, June 1872.) Range. — From ex- 

 treme western part of Panama north through Costa Rica, Nicaragua, and Hon- 

 duras. In the south it merges gradually with aequatorialis, making the indi- 

 viduals from Panama quite intermediate. Specimens from Honduras near Gua- 

 temalan border are typical palliata; intergradation between these and the Mexi- 

 can and black Guatemalan forms probably takes place farther north. 



Alouatta palliata aequatorialis Festa* 



1903. Alouata [sic] aequatorialis Festa, Boll. Mus. Zool. Anat. Comp. Univ. 



Torino, vol. 18, No. 435, p. 3, Feb. 11, 1903. 

 1913. Alouatta palliata inconsonans Goldmanf, Smithsonian Misc. Coll., vol. 



60, No. 22, p. 17, Feb. 28, 1913. (Cerro Azul, near headwaters of Chagres 



River, Panama. Altitude, 2,500 feet.) 

 1933. Alouatta palliata aequatorialis Lawrence, Bull. Mus. Comp. Zool., vol. 



75, p. 322, November 1933. 



M Subspecies of Alouatta palliata revised by Lawrence, Bull. Mus. Comp. Zool., vol. 75, 

 pp. 315-354, November 1933. 



