MAMMALS OF THE MEXICAN BOUNDARY. 



81 



fish fauna is limited and variable; but we obtained several species. 

 Birds and mammals are fairly well represented, but, as the species 

 will be fully listed in the special reports on those classes, details are 

 omitted here. A number of turtles were found in the Rio Grande at 

 El Paso, and Prof. J. D. Bruner obtained the ornate box-turtle, 

 Terrapene ornata (Agassiz). Lizards ajid snakes were quiescent 

 during the winter season of our stay; but the efforts of Mr. J. H. 

 Clark, of the old Boundary Survey, and those of Col. J. D. Graham, 

 Maj. W. H. Emory, Lieutenant Ives, Dr. S. W. Woodhouse, and 

 S. W. Crawford, of the Army, have added the following species to 

 the collections of the U. S. National Museum from this station : 



LizarAs. 



Crotaphytus collaris (Say). 



Holbrookia texana (Troschel). 



Sceloporus clarkii Baird and Girard. 



Soeloporus spinosns Wiegmann. 



Sceloporus undulatus conao'brinus 

 (Baird and Girard). 



Soeloporus thayerii Baird and Girard. 



Phrynosoma cornutum (Harlan). 



Anota modesta (Girard). 



Cnemidophorus tessellatus (Say). 



Cnemidophorus gularis Baird and 

 Girard. 



Eumeoes ohsoletus (Baird and Gi- 

 rard). 



[Anniella texana Boulenger. "A sin- 

 gle specimen from Bl Paso, Tex."] 



Snalces. 



Cyclophis wstivus (Linn8eu.s). 

 Colulter emoryi (Baird and Girard). 

 Rhinochilus lecontel Baird and Girard. 

 JHutcenia sirtalis parietalis (Say). 



Batrachias. 



AmMy stoma tigrinum (Green). 

 Amblystoma tigrinum californiense 



Gray. 

 Bufo compactilis Wiegmann. 



Station No. 6. — Rio Grande, Chihuahua, Mexico, opposite old 

 Fort Bliss, Texas. Altitude, 1,130 meters (3,708 feet). Birds and 

 mammals collected by Mearns and Holzner, March 14 and 15, 1892. 



Station No. 7. — Monument No. 15, near B. F. Wragg's ranch, 80 

 km. (49.6 miles) west of the initial Monument on the Rio Grande. 

 Latitude, 31° 47'. Altitude, 1,280 meters (4,200 feet). This camp 

 was occupied from March 20 to April 7, 1892. The lowest point in 

 the neighborhood (distant 3^ miles) is 80 meters lower than the 

 camp. The Florida Mountains, 42 km. (26 miles) northwest of 

 Monument No. 15, have an altitude of 2,249 meters (7,379 feet), and 

 are said to be wooded with red juniper and piiion pine, and to con- 

 tain good water. They were not visited by any of our party. The 

 nearest water that is available to wild animals is that of the Palomas 

 Lakes, in the Mimbres Valley, 14 miles to the westward. The 

 country is mostly low, rolling, with sand hills and a few volcanic 

 buttes (Aguila Mountains) and low ranges, known as the Seca and 

 Potrillo mountains (altitude 1,280 to 1,800 meters), within a few 

 miles of the camp ; these support a growth of bushes and some grass. 

 There are no trees; but yuccas of arborescent habit (Yucca constrictor 

 30639— No. 56—07 m 6 



