49. KINOSTERNON 969 



Length of carapace 115 118 121 122 123 144 



Length of plastron 105 103 106 107 109 134 



Width of carapace 80 79 86 83 85 101 



Width of plastron 60 61 66 62 65 79 



Remarks. — What has been said under the head K. flaves- 

 cens applies, but need not be repeated, here. 



Distribution. — This turtle is common in parts of Arizona, 

 where it seems to be generally distributed throughout the 

 Gila River and its tributaries. It lives also in the Colorado 

 River, but whether it ascends this river above the mouth 

 of the Gila is not known. It is said to range across New 

 Mexico to southwestern Texas. 



In Sonora it has been taken in the San Pedro River, in 

 the Sonoyta River three miles from Sonoyta, in Cajon Bonito 

 Creek, in the San Bernardino River, and in Guadalupe Can- 

 yon. 



In California, it has been collected on the banks of the 

 Colorado River opposite Yuma and at Palo Verde, in Im- 

 perial County. 



In Arizona, specimens have been secured at Yuma, and 

 near Adonde, Yuma County; Phoenix and Cave Creek, 

 Maricopa County; Fort Whipple and Fort Verde, Yavapai 

 County; Tucson and Sabino Canyon in the Santa Catalina 

 Mountains, Pima County; Rock Creek, Navajo County; the 

 Chiricahua Mountains, Fairbank, six miles east from Here- 

 ford, and the Huachuca Mountains, Cochise County; Gard- 

 ner Canyon in the Santa Rita Mountains, and Nogales, Santa 

 Cruz County; and at Ash Creek, Warsaw, and Grand Cen- 

 tral Mills. 



Habits. — While this turtle is very aquatic in habits, it 

 sometimes leaves the water to bask in the sun. It is carnivor- 



