556 alouatta. pithecia. callicebus. 



Mexican Howler. 



I. Adult 6^ Coll. Achotal, State of Vera Cruz, Mexico. Heller 

 & Barber. 

 2-5. Adult 9 Coll. Achotal, State of Vera Cruz, Mexico. Heller 

 & Barber. 

 6. Juv. 9 Coll. Achotal, State of Vera Cruz, Mexico. Heller 

 & Barber. 



b. Alouatta palliata coibensis Thomas. 



Alouatta palliata coibensis Thos., Novitat. Zool., ix, 1902, p. 135. 

 Elliot, Mamm. Middle Amer. & W. Indies, F. C. M. Pub., iv, 

 Pt. II, 1904, p. 727. Zool. Ser. Id. Check-L. Mamm.N. Amer. 

 Cont. & W. Indies, F. C. M. Pub., vi, 1905, p. 533. Zool. Ser. 

 CoiBA Island Howler. 



I. Adult 9 Topotype. P. Coiba Island, Panama. J. H. Batty. 



Subfamily II. Pitheciinae. 



Genus 323. Pitliecia. 



Pithecia Desm., Nouv. Diet. Hist. Nat., xxiv, 1804, p. 8. Type 

 Siniia pithecia Linnaeus. 

 Chiropotes Less., Spec. Mamm., 1840, p. 178. 



978. Pithecia pithecia (Linnaeus). 



Simia pithecia Linn., Syst. Nat., i, 1766, p. 40. 



Simia leucocephala Audeb., Hist. Nat. Singes, Fam. vi. Sect, i, 



1797, p. 9, fig. 2. 

 Pithecia leucocephala Geoff., Ann. Mus. Hist. Nat. Paris, xix, 1812, 



p. 117. 

 Pithecia capillamentosa Spix, Sim. et Vespert. Bras., 1823, p. 16, 



pi. XI. 

 Pithecia nocturna Schleg., Mus. Pays-B., xii, 1876, p. 217. (Part.) 

 Black Yarkee. 



I. Adult — P.Guiana. Ward's Nat. Scien. Establ., Rochester, N. Y. 



Subfamily III. Aotinae. Squirrel Monkeys. 



Genus 324. Callicebus. 



Callicebus Thos., Ann. Mag. Nat. Hist., 7th Ser., xii, 1903, p. 457. 

 Type Callithrix personatus Geoff roy. 



