!74 



MERRIAM 



ber up to 30. In addition to these, 4 are known from the 

 United States. 



The material on which this paper is based comprises 600 

 good skins with skulls, 350 of which were collected in Mexico 

 by E. W. Nelson and E. A. Goldman during their field work 

 under the auspices of the Biological Survey of the U. S. De- 

 partment of Agriculture. All the specimens are accompanied 

 by field notes and flesh measurements. 



Thirty-five species and subspecies are here recognized from 

 the United States, Mexico, Guatemala and Nicaragua; these, 

 with their type localities, are : 



Oryzomas palustris (Harlan) Southern New Jersey 



natator Chapman Gainesville, Florida 

 jiatator Jioridanus subs^. nov. Everglade, Monroe Co., Fla. 



aquaticus Allen Brownsville, Texas 



fenmsidce Thomas Santa Anita, Lower California 



nelsoni'hl.Q.xxxQ.vci Maria Madre, Tres Marias Ids. 



albiventer sp. nov. Ameca, Jalisco, Mexico 



cozumelce sp. nov. Cozumel Id., Yucatan, Mexico 



fulgens Thomas ? Valley of Mexico 



crinitus sp. nov. Tlalpam, Federal District, Mexico 



crinitus aztectis subsp. nov. Yautepec, Morelos, Mexico 



mexicanus Allen Tonila, Jalisco, Mexico 

 ?nexicanus peragrus subsp. 



nov. Rio Verde, San Luis Potosi, Mex. 



richmo7idi sp. nov. Escondido River, Nicaragua. 



jalapa; Allen Jalapa, Vera Cruz, Mexico 



ialapce rnjimis subsp. nov. Catemaco, Vera Cruz, Mexico 



zygomatictis sp. nov. Nenton, Guatemala 



teape?isis sp. nov. Teapa, Tabasco, Mexico 



buUeri Allen Valle de Banderas, Jalisco, Mexico 



rufus sp. nov. Santiago, Tepic, Mexico 



couesi (Alston) Coban, Guatemala 



goldmani sp. nov. Coatzacoalcos, Vera Cruz, Mexico 



chap77ia7ii Thomas Jalapa, Vera Cruz, Mexico 

 chapmani saturatior subsp. 



nov. Tumbala, Chiapas, Mexico 

 ckap??iani d Hut tor suhsp. nov. Huauchinango, Puebla, Mexico 

 chap77iani caudattis subsp. 



nov. Comaltepec, Oaxaca, Mexico 



palatimis sp. nov. Teapa, Tabasco, Mexico 



hylocetes sp. nov. Chicharras, Chiapas, Mexico 



rhabdops sp. nov. Calel, Guatemala 



angusticeps sp. nov. Volcan Santa Maria, Guatemala 



melanotis Thomas San Sebastian, Jalisco, Mexico 



