38. HYPSIGLENA39. MATRIX 783 



from Lone Pine), Santa Clara (Los Gatos), and Contra 

 Costa (near Christy) counties. 



The only Nevada record is of a specimen from the 

 vicinity of Currant, Nye County. 



In Utah, two specimens have been taken near Fort 

 Douglas, Salt Lake County. 



Arizonan records are more numerous, and indicate its 

 presence at Camp Grant, Graham County; Nigger Jim Can- 

 yon, Huachuca Mountains, Cochise County ; Fort Buchanan, 

 and Nogales, Santa Cruz County; Fort Whipple, and Pres- 

 cott, Yavapai County; Bright Angel Creek, Coconino Coun- 

 ty; Phoenix and Cave Creek, Maricopa County; and 

 in Pima County near Tucson, Gunsight, and in the foothills 

 of the Catalina Mountains 1 8 miles north of Tucson. 



In Sonora, it has been found at Guaymas. 



Habits. Almost nothing is known regarding the habits 

 of this little snake. It probably is nocturnal and usually is 

 found under stones. Grinnell mentions one found in a 

 clover patch at about four in the afternoon. 



Genus 39. Natrix 



Natrix LAURENTI, Synopsis Reptilium, 1768, p. 73 (type vulgaris- natrix). 

 Tropinotus KUHL, Isis von Oken, 1822, p. 473. 

 Tropidonotus BOIE, Isis von Oken, 1826, p. 205 (type, natrix). 

 Rhabdophis FITZINGER, Syst. Kept., 1843, p. 27 (type, subminiatuj). 

 Steirophii FITZINCER, Syst. Kept., 1843, P- 2 7 ( tv P e > ckrysargus). 

 Hydrophilophis SCHMIDT, Abh. Naturw. Ver. Hamburg, Vol .II, Pt. 2. 

 Nerodia BAIRD & GIRARD, Cat. N. Amer. Kept., Pt. I, Serpents, 1853, 



p. 38 (type, slpedon). 

 Regina BAIRD & GIRARD, Cat. N. Amer. Rept., Pt. i, Serpents, 1853, 



p. 45 (type, lebcris). 

 Amfhiesma DUMERIL & BIBRON, Erpet. Gener., Vol. VII, 1854, p. 724- 



(type, stolatum). 

 Bothrodytes COPE, Proc. Amer. Philos. Soc., Vol. XXIII, 1886, p. 495 



(type, subminiatum). 



