I02 OHIO STATE ACADEMY OF SCIENCE. 



19. Body bright orange yellow, with irregular black spots; tail longer than 

 rest of body. — Spelerpes longicaudus — p. 113. 



Body not bright orange yellow ; no black spots ; tale equal to or l«ss 

 than rest of body. 20. 



-20. Lower jaw prpjecting beyond upper. Body slender. — 



Amblystoma microstomum — p; no. 

 I/Ower jaw not projecting. Body stout. 21. 



21. Habits terrestrial ; never in immediate vicinity of water. Body spotted 



with white.— Plethodon gluHnosus—p. 112. 



Habits aquatic, being found in or near water. 22. 



22. A dorsal band of birowii. 23. 



No dorsal band of brown. — Gyrinophilous porphyriticus — p. 112. 



23. With a series of small red spots on the sides. — 



Despiognatkus fusca auriculafa — p. 115. 

 No series of red spots.^- Desmognathus fusca fusca—-^. 115. 



24. Toes without terminal discs or suckers. 25. 

 Toes with terminal discs or suckers. 32. 



25'. Size very large, 5-8 in. in length. — Rana catesbiana — p, 121. 



Size smaller, riot over 4 in. in length. 26. 



26. Jaws without teeth. Skin warty. r- 



Bufo leniiginosus americanus — p. 117.. 

 Jaws with teeth. 27. 



27. With a very prominent brownish band running along the sides of head, 



through the eye, to the angle of the mouth. — 



Rana sylvatica — ^p. 122. 

 No brown band through eye. 28. 



28. Body uniform brownish or green, without blotches, 29. 

 Body with large blotches. 30. 



29. Ear smaller than eye. — Rana septentrionalis — p. 121. 

 Ear as large or larger than eye.— Rana clamata — p. 121. 



30. Blotches on back arranged it two rows, the blotches of one row being 



opposite those of the other. — Rana palusiris — p. 121. 



Blotches irregularly arranged, the blotches of one row alternating with 

 those of the other. 31. 



31. A -longitudinal band on front of thigh. — 



Rana virescens virescens — p. 120. 

 No longitudinal band on front of thigh.— 



Rana virescens brachycephala — p. 120. 



32. Habits palustrine, on the ground in swamps. 33. 

 Habits arboreal, living in trees and bushes. 34. 



33. Toes webbed ; top of head bright green. — 



Acris gryllus crepitans-^-p. ii9i. 

 Toes not webbed ; head brownish. — Chorophilus triseriatus — p. 118, ■ 



34. Length over I >^ in. Green. — Hyla versicolor— -p. 120. 

 Length less than I >^ in. Yellowish. — Hyla pickeringii — p. 119. 



35. Four legs developed. 36. 

 Legs not developed. 51. 



36. Body encased in shell. — Tbstudinata. 37. 

 Body not encased in shell. 47. 



.37. Shell flattened, leathery and pliable. 38.. 



Shell heavy, firm, more or less arched. 39. 

 ,38, Nostrils at end of snout.— Aspidonecles spini/er—p. 138. 



Nostrils not at end of snout, but beneath it.—Amyda mutica^-^-^ 138. 



