j. Brilliant coloration; 

 long, narrow paro- 

 toids; greater width 

 between parallel 

 cranial crests; hind 

 limbs shorter; ven- 

 tral granulation 

 smooth. 

 Hudson Bay toad. 



Bufo americanus copei. 



II. Warts round; parotoids 

 slightly divergent at 

 rear, and on lateral as- 

 spect; parotoids usually 

 in contact with postor- 

 bital crest; often with 

 boss on nostril with 

 crests extending back- 

 ward. 

 Rocky Mt. toad. Bufo 



woodhousii. Plate XXV. 



cc. Parotoids round or triangular; sole (metatarsal) 

 tubercles round, small, non-cutting; dorsal pat- 

 tern without the 4-6 paired spots (of the B. 

 americanus, fowleri, terrestris, woodhousii, etc. 

 group). 

 d. Crest prominent; size large 2-8 4/5 inches 

 (50-220 mm.); parotoid subtriangular. 

 e. Parotoid as large as or larger than side of 

 head, divergent, not bicolored; toes 1/2- 

 2/3 webbed; crests not trenchant and top 

 of head not a deep valley ; brown with some 

 black, yellow, red, olive; with or with- 

 out black spots on a light vertical line. 



Marine toad. Bufo marinus. Plate XX. 



ee. Parotoid much smaller, not as large as 

 side of head, not divergent, bi-colored; 

 row of light conical tubercles on side, 

 body flat; toes 1/3 webbed; crest high 

 trenchant and top of head a deep valley; 

 brown or blackish brown with light olive, 

 buff or cinnamon area down back and a 

 similar band or stripe on either side. 



Mexican toad. Bufo valliceps. Plate XXIV. 



20 



