/. SCAPHIOPUS, Holbrook. Spadb Foots. 

 1. S. holbrookii, (Harlan) Baird. Solitary Spade 

 Foot. Heel with a sharp - edged spur; olive brown, a 

 pale yellow streak on each side. E. U. S., not very- 

 common; burrows in the ground. {8. solitarius, Holbr.) 



FAMILY LXXIX.— HYLID^. 



{The Tree Frogs) 

 Arboreal frogs of small size, having the fingers and 

 toes more or less dilated into disks at their tips; ear well 

 developed. Genera ten; species sixty; found in most 

 parts of the world; noted for their shrill voices. 



* Disks round, conspicuous ; fingers somewhat webbed ; skin 



roughened Hyla, 1. 



** Disks small ; fingers not webbed. 

 f Toes webbed only at base or not at all ; tympanum distinct. 



Chorophilus, 3. 

 f f Toes broadly webbed ; tympanum indistinct. . Aceis, 3. 



/. HYLA, Laurenti. Tkee Feogs. 



1. H. versicolor, LeConte. Common Tebe Toad. 

 Green, gray or brown, with irregular dark spots; below 

 yellow or white ; fingers one -third webbed; exceedingly 

 variable. E. U. S., very abundant. 



2. H. pickeringii, Holbrook. Pickering's Tree Toad. 

 Yellowish brown with dusky rhomboidal spots and lines 

 sometimes arranged in the form of a cross. E. U. S. 



3. H. andersonii, Baird. Anderson's Tree Toad. 

 Deep pea-green; sides with irregular yellow spots;, a 

 purplish band on sides of head. N. J. to S. 0., rare 



2. CHOROPHILUS, Baird. Little Tree Frogs. 

 1. C. triseriatus, (Wied.) Baird. Tree Frog. E. U. S. 



