Sonora Hyla. Sonora Tree Frog, 



Plate XLIII. (xf). I, 3. 

 Male with throat partly in- 

 flated. 2. Female in water. 

 4. Male in water. 



Hyla eximia Baird. 



Range: Texas, New Mex- 

 ico, Arizona and Mexico. 



Habitat: Edges of lakes, 

 swampy and springy places. 



Size: Adults, 1-1 7/8 

 inches. (Males, 24-43 mm - 

 Females, 24-48 mm.). 



General appearance: At first 

 glance, these frogs look like 

 Anderson's tree frogs {Hyla 

 andersonii), green Pacific tree 

 frogs (Hyla regilla), or large 

 chorus frogs (Pseudacris). 

 They are bright green with a 

 dark purple or black line 

 from the snout through the 

 eye, broadening over the 

 tympanum and extending 

 half way along the sides. This 

 vittal stripe may be broken 

 into groin spots, is slightly 

 margined above with white, 

 on the sides is irregular in 

 outline and may be lighter 

 and bronzy in the center. 

 There are two conspicuous 

 linear black spots extending 

 backward from the rump, oc- 

 casionally paired dark spots 

 on the forward part of the 

 back, but no marks between 

 the eyes. The groin is con- 

 spicuously greenish orange or 

 old gold, as is the rear of the 

 femur which is unspotted. 

 There are irregular spots or 

 bars on the tops of the arms 



Il8 



