List of Half-Tones 



PLATE FACING PAGE 



dead," even breathing movements are sus- 

 pended. (Bufo fowleri, female.) Fig. 80. 

 "Ready for new emergencies." Fig. 81. Pro- 

 tective resemblance of FOWLER'S TOAD . 95 

 XXIX Figs. 82-84. FOWLER'S TOAD; study of hand 

 and foot; vocal pouch; texture of skin; 

 parotoids and cranial crests ... 98 

 XXX Fig. 85. Structure study of hand and foot of 

 Bujo cognatus. Fig. 86. Defensive. Fig. 

 87. Ready for emergencies ... 99 

 XXXI Figs. 88-89. B u f ^gnatus Say; structural 

 characteristics of under surface; identifica- 

 tion characteristics of bony crests of head, 



of parotoids, etc. 100 



XXXII Figs. 90-92. Bujo cognatus Say: intricate pat- 

 tern of lines on back; short head; length of 

 foot; comparison of striped and spotted toad 101 

 XXXIII Figs. 93-95. Bufo compactilis Wiegm: instincts 

 for hiding and burrowing; study of hand 

 and foot; parotoid glands; warts on upper 



surface 102 



Figs. 96-98. Studies of Bufo compactilis 

 Wiegm. Figs. 99-100. Bufo cognatus Say; 



vocal bladder 103 



Figs. 101-106. The OAK TOAD (Bufo querci- 

 cus Holbrook) : bony crests of head ; arrange- 

 ment of light and dark colour on upper 

 parts; covered with small warts; structure 



study of underparts 104 



XXXVI Figs. 107-109. Bufo olvarius Girard: texture 

 of skin, parotoid glands, cranial crests and 

 other identification points . . . .105 

 XXXVII Figs, iio-iu. Bufo alvarius Girard: studies 



of palm and foot 106 



XXXVIII Figs. 112-113. Bufovalliceps: outline of jaw, 

 texture of skin of under parts and structure 



of hand 107 



XXXIX Fig. 114. Bufo valliceps Wiegm: structure 

 study of upper surface. Fig. 115. Bufo 



XXXIV 

 XXXV 



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