v.2o f o.l 



EXPLANATION OF PLATES. 



HERPETOLOGY. 

 BATRACH1A. 



PLATE I. 



Fig. 1, represents Taricha torosa, in profile, and size of life, 

 -p. 5. 



Fig. 2, exhibits the under surface of the same specimen. 

 Fig. 3, is an outline of the head, seen from above, showing the 

 wide interocular space. 



Fig. 4, the head in profile, exhibiting the gape of the mouth. 

 Fig. 5, is a front view of the head. 



Fig. 6, the inferior floor of the mouth, showing the shape and 

 size of the tongue. 



Fig. 7, the upper floor of the mouth (palate), exhibiting the 

 inner nostrils, and the situation of the palatine teeth. 



Fig. 8, exhibits, under a magnifying power, the structure of 

 the skin of the dorsal region. 



Fig. 9, represents Xiphonura tenebrosa, size of life. — p. 14. 



Fig. 10, the under surface of the same animal.. 



Fig. 11, an outline of the head, seen from above, showing the 

 interocular space. 



Fig. 12, a profile of the head, showing the gape of the mouth. 



Fig. 13, a front view of the head, showing the situation of the 

 nostrils. 



Fig. 14, the inferior floor of the mouth, with the outline of the 

 tongue. 



Fig. 15, the upper floor of the mouth, with the inner nares, and 

 the disposition of the palatine teeth. 



Fig. 16, exhibits, under a magnifying power, the structure of 

 the skin of the dorsal region. 



Fig. 17, the structure of the skin of the abdominal region. 



Fig. 18, represents Heredia oregonensis, size of life. — p. 11. 



Fig. 19, is the under surface of the same animal. 



Fig. 20, an outline of the head, from above, showing the inter- 

 ocular space. 



Fig. 21, a profile of the head, showing the gape of the mouth. 

 Fig. 22, a front view of the head, showing the position of the 

 nostrils. 



Fig. 23, the inferior floor of the mouth, with the outline of the 

 tongue. 



Fig. 24, the upper floor of the mouth (palate), with the inner 

 nostrils and the palatine teeth. 



Fig. 25, the structure of the skin of the dorsal region, under a 

 magnifying power, though not powerful enough to show the stel- 

 lated bodies therein contained. 



Fig. 26, represents Anaides lugubris, size of life. — p. 8. 



Fig. 27, the under surface of the same animal. 



Fig. 28, an outline of the head, from above, showing the inter- 

 ocular space. 



Fig. 29, a profile of the head, showing the gape of the mouth. 

 Fig. 30, a front view of the head, with the nostrils. 

 Fig. 31, the inferior floor of the mouth, with the outline of the 

 tongue. 



Fig. 32, the upper floor of the mouth, exhibiting the patches 

 of sphenoid teeth, the disposition of the vomero-palatine ones, 

 and the inner nostrils. 



Fig. 33, the structure of the skin under a magnifying power, 

 exhibiting the granules it contains. 



PLATE IT. 



Fig. 1, represents Ran A aurora, size of life. — p. 18. 



Fig. 2, is a profile of the head. 



Fig. 3, an outline of the head, seen from above. 



Fig. 4, the same region, from beneath. 



Fig. 5, under surface of the right hand. 



Fig. 6, under surface of the right foot. 



Fig. 7, represents Rana maritima, size of life. — p. 25. 



Fig. 8, a profile of the head. 



Fig. 9, the head seen from above. 



Fig. 10, the head seen from beneath. 



Fig. 11, the under surface of the left hand. 



Fig. 12, the under surface of the left foot. 



Fig. 13, represents Rana pretiosa, size of life. — p. 20. 



Fig. 14, a profile of the head. 



Fig. 15, the head seen from above. 



Fig. 16, the head seen from beneath. 



