ARBOREAL RICE RATS — HERSHKOVITZ 553 



(AMNH); Villavicencio, Meta, 2 (AMNH, types of helvolus aud vicencianus) ; 

 Maipures, Rfo Orinoco, Vichada, 1 (BM, type of marmosurus) . 



Venezuela: Rfo Cogollo, Mdrida, 1 (CNHM) ; La Azulita, M(Srida, 4 (CNHM) ; 

 M^rida, Merida (includes Cafetos de Mdrida, Milla, Lourdes, Chama, Montes de la 

 otra banda) 37 (BM, type of flavicans; AMNH, 23; CNHM, 3; USNM, 10); 

 Caicara, Rio Orinoco, Bolivar, 4 (AMNH, includes type of caicarae); El Yagual, 1 

 (AMNH, type of klagesi); Rio Casiquiare, Amazonia, 1 (AMNH); Rio Casi- 

 quiare, near Raudai Tamasu, Amazonia, 1 (AMNH); El Merey, Rio Casiquiare, 

 Amazonia, 2 (AMNH); Esmeralda, Rio Orinoco, Amazonia, 3 (AMNH); Ihuapo, 

 Rio Orinoco, Amazonia, 1 (AMNH); Rio Ocama, mouth, at Rio Orinoco, Ama- 

 zonia, 3 (AMNH). 



Bkazil: Jauarate, Rio Uaup6s, Amazonas, 1 (AMNH); Yavanari, Rio Negro, 

 Amazonas, 1 (AMNH); Igarap6 Piaba, mouth, Rio Amazonas, Pard, 1 (MCZ); 

 Lago Cuiteud, Rio Amazonas, Para, 1 (MCZ); Rosarhinho, Lago Miguel, Rio 

 Madeira, Am.azonas, 1 (AMNH); Tauary, Rio Tapaj6z, Pard., 2 (MCZ); Ilha 

 Manapiri, Rio Tocantins, Pard, 1 (AMNH); Barao de Melgago, Mato Grosso, 

 3 (AMNH). 



Oryzomys concolor speciosus J. A. Allen and Chapman 



Oryzomys speciosus J. A. Allen and Chapman, Bull. Amer. Mus. Nat. Hist., 

 vol. 5, p. 212, 1893; vol. 9, p. IS, 1897 (Caparo, Trinidad).— Goodwin, Bull. 

 Amer. Mus. Nat. Hist., vol. 102, p. 300, 1953 (type history and measurements). 



Oryzomys trinitatis J. A. Allen and Chapman, Bull. Amer. Mus. Nat. Hist., vol. 5, 

 p. 213, 1893 (type locality, Prince's Town, Trinidad); vol. 9, p. 18, 1897 (Trini- 

 dad: Caparo; Caura). — Tate, Bull. Amer. Mus. Nat. Hist., vol. 76, p. 190, 

 1939 (Bartica, British Guiana; Arabupu, Mt. Roraima, and Sucre, Venezuela; 

 and Trinidad. Synonyms: palmarius, fulvivenier) .—Goodwin, Bull. Amer. 

 Mus. Nat. Hist., vol. 102, p. 301, 1953 (type history and measurements). 



Oryzomys palmarius J. A. Allen, Bull. Amer. Mus. Nat. Hist., vol. 12, p. 211, 1899 

 (type locality, Quebrada Seca, Rio Manzanares, Cumanacoa, Sucre, Venezuela; 

 another specimen from Los Palmales, Sucre). — Goodwin, Bull. Amer. Mus. 

 Nat. Hist., vol. 102, p. 301, 1953 (type history; "may be a subspecies of 0. 

 ffavicens [mc~flavicans'\ Thomas"). 



Oryzomys fulviventer J. A. Allen, Bull. Amer. Mus. Nat. Hist., vol. 12, p. 212, 1899 

 (type locality, Quebrada Seca, Cumanacoa, Sucre, Venezuela). — Goodwin, 

 Bull. Amer. Mus. Nat. Hist., vol. 102, p. 301, 1953 (type history and measure- 

 ments). 



CEcomys guianae Thomas, Ann. Mag. Nat. Hist., ser. 8, vol. 6, p. 187, 1910 (type 

 locality, Supinaam River, Demerara, British Guiana). — Anthony, Zoologica, 

 vol. 3, No. 13, p. 274, 1921 (Kartabo, British Guiana). 



Oecomys guianae guianae, Tate, Bull. Amer. Mus. Nat. Hist., vol. 76, p. 193, 1939 

 (listed). 



CEcomys splendeus Hayman, Ann. Mag. Nafc. Hist., ser. 11, vol. 1, p. 381, 1938 

 (type locality, Mayaro, southeastern Trinidad). 



Oecomys auyantepui Tate, Bull. Amer. Mus. Nat. Hist., vol. 76, p. 193, 1939 

 (type locality, southern slopes of Mt. Auyan-tepui, Rio Caroni, Bolivar, 

 Venezuela, altitude, 3,500 feet).— Goodwin, Bull. Amer. Mus. Nat. Hist., 

 vol. 102, p. 302, 1953 (type history and measurements). 



Type: Adult female, skin and skull (AMNH 5942/4672) collected 

 Apr. 26, 1893, by Frank M. Chapman. 

 Type locality: Prince's Town, Trinidad. 



