186 bateachia: salientia. — xxyii. 



bb. Tympanum as large or larger than eye. 



529. R. clamitans Latreille. Green Fkog. Green or brownish, 

 brighter in front ; generally with irregular small black spots ; arms 

 and legs blotched, yellowish or white below; tympanum large; 

 glandular folds large ; toes well webbed ; first finger not extending 

 beyond second ; tibia and femur equal, J body. L. 3. E. U. S., 

 in springs, etc. (Lat., caUing.) (iS. clamata.') 



aa. Glandular folds on sides of back obsolete or nearly so ; dark spots on back 

 small; web of feet reaching tip of fourth toe. 



530. R. catesbeana Shaw. Btjll-Feog. Greenish, of varjdng 

 shades, with small faint dark spots above ; head usually bright 

 pale green ; legs blotched ; ear large ; toes broadly webbed ; femur 

 equal to tibia, not half body. L. 5 to 8. Largest of the frogs ; in 

 ponds and sluggish rivers, from Kansas E. ; remarkable for its 

 sonorous bass notes. (To Mark Catesby, who first figured the 

 bull-frog.) 



530 b. R. virgatipes Cope. — No longitudinal glandular folds 

 on back ; tympanum equals eye ; webs rather short, two phalanges 

 of fourth toe free ; vomerine teeth between inner nares ; inter- 

 ocular space ^ width of eyelid. Color above olive-brown with two 

 light-brown longitudinal bands on each side, the inferior band 

 bounded below by a wide band of black spots ; limbs blotched with 

 black. L. 60 mm. Atlantic Co. N. J. (Z. S.) (L. striped-foot.) 



For additional species, see Appendix. 



