28 UNITED STATES AND MEXICAN BOUNDARY. 



>» vend pairs more interrupted anterior to it. Skin corrugated and irregular, quite pustular in some 

 specimens. Feet webbed from the bulb of the toes; excavated on the inner edges; last joint of longest 

 free. Femur about half the length of body, shorter than the tibia. 



Color above greenish olive, with distant sub-circular blotches of darker, scarcely areolated in the 

 preserved specimens. Beneath yellowish white, with brown mottlings on the throat. An indistinct 

 whitish line on the side of the head, especially in the young; the lateral ridge bronzed. 



Southern Texas generally. 



118. RAXA AREOLATA, B.U. 

 Plate XXXVI. Figs. 11, 12. 



Sana areolata, B. & G. Pr. A. X. Sc. VI, Oct. 1852, 1T3 



Indianola. J. H. Clark. 



119. SCAPHIOPUS COUCHII, Baird. 



Plate XXXV, Figs. 1—6. 



Scaphiopus couchii, Baird, Pr. A. X. So. VII, April, 1854, 62. 



Sp. Ch. — Outer toe but little shorter than the third. Hand nearly as long as the forearm. Above 

 grayish ash in alcohol, with dark markings. A dark line down the back from each orbit. Beneath white; 

 length about one inch or more. Older specimens apparently more greenish. 



Lower Rio Grande. Lieutenant Conch. 



120. ACRIS CREPITANS, Baird. 



Plate XXXVII, Figs. 14—17. 



Hylodes gryllus, DeKay, N. Y. Zool. Ill, 1842, TO; pi. xxii. (Not of Leconte.) 

 Acris crepitans, Baird, Pr. A. N. Sc. VII, April, 1854, 59. 



Sp. Ch. — Brownish above. The median region of head and body above bright green; a dark triangle 

 between the eyes. Three oblique blotches on the sides, nearly equidistant; the first behind the eye, the 

 last on the flanks and running up on the back; all usually margined with lighter. A narrow white line 

 from the eye to the arm. Beneath yellowish white. Inferior face of thigh plain. Tibia a little more than 

 half the length of the body; foot rather smaller. Head rather obtuse, scarcely longer than broad, Web 

 of hind foot extending to the penultimate articulation of the fourth toe. 



Indianola, Texas. J. H. Clark. — New Braunfels. F. Lindheimer. 



121. HELOECETES CLARKII, Baird. 



Plate XXXVII. Figs. 4—9. 



Heloecetes clarkii, Baird, Pr. A. N, Sc. VII, April, 1854, 60. 

 Sp. Ch. — Snout acute, projecting. Extremities somewhat dilated. Tibia half the distance between 



eye and anus. Foot but little longer, not nearly half the length of body. 



^1 



with distinct large circular blotches. A dark band from snout through eye and tympanum down the 

 sides, and a whitish line on the side of jaw. Body about one inch long 



Indianola, Texas. J. H. Clark. 



122. IIYLA SEMIFASCIATA, Hallow 



Hyla ®emifa8cuaum, Hallow. Pr. A. N. Sc. VIII, Dec. 1856, 306. 

 Indianola. J. H. Clark. 



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