HERPE 



T L G Y. 



Fig. 17, the head, viewed from above. 

 Fig. 18, the under surface of the right hand. 

 Fig. 19, the under surface of the right foot. 

 Figs. 20 and 21, represent Brachycephalus aurantiacus, 

 of life.— p. 100. 



Fig. 22, is an under view of the same. 

 Fig. 23, the under surface of the left hand. 

 Fig. 24, the under surface of the right foot.. 



PLATE VI. 



Fig. 1, represents Bufo, marinus, size of life. — p. 80. 



Fig. 2, the under surface of the right hand. 



Fig. 3, the under surface of the right foot. 



Fig. 4, represents Bufo boreas, size of life. — p. 74. 



Fig. 5, a profile of the head. 



Fig. 6, the head, seen from above. 



Fig. 7, the head, viewed from beneath. 



Fig. 8, the under surface of the right hand. 



Fig. 9, the under surface of the left foot. 



Fig. 10, represents, Bufo lugubrosus, size of life. — p. 85. 



Fig. 11, a profile of the head. 



Fig. 12, the head viewed from above. 



Fig. 13, the head seen from beneath. 



Fig. 14, the under surface of the left hand. 



Fig. 15, the under surface of the right foot. 



Fig. 16, represents Bufo gracilis, size of life. — p. 83. 



Fig. 17, a profile of the head. 



Fig. 18, the head viewed from above. 



Fig. 19, the head seen from beneath. 



Fig. 20, the under surface of the right hand. 



Fig. 21, the under surface of the left foot. 



0PHIDIA. 



PLATE VII. 



Fig. 1, represents Wenona plumbea, size of life. — p. 112. 



Fig. 2, a profile of the head. 



Fig. 3, the head, viewed from above. 



Fig. 4, the head, seen from beneath. 



Fig. 5, a front view of the head. 



Fig. 6, a group of dorsal scales, showing their disposition. 

 Fig. 7, the vent, with the preanal scutella, and the minute 

 scales surrounding it. 



Fig. 8 represents Wenona Isabella, size of life. — p. 113. 



Fig. 9, a profile of the head. 



Fig. 10, the head, viewed from above. 



Fig. 11, the head, seen from beneath. 



Fig. 12, a front view of the same region. 



Fig. 13, a group of dorsal scales. 



Fig. 14, the vent and adjoining scutellae. 



PLATE VIII. 



Fig. 1, represents Pituophis catenifer, size of life. — p. 135. 

 Fig. 2, is a profile of the head ; 

 Fig. 3, an upper view of the same. 

 Fig. 4, the head, seen from beneath ; 

 Fig. 5, a front view of the same region. 

 Fig. 6, exhibits the shape and number of rows of scales ; 

 Fig. 7, the vent and surrounding scutellae. 

 Fig. 8, represents Cerberus boaeformis, size of life. — p. 170. 

 Fig. 9, is a profile view of the head. 

 Fig. 10, an upper view ; and, 

 Fig. 11, an under view of the same region. 

 Fig. 12, represents Bascanion vetustus, size of life. — p. 127. 

 Figs. 13 and 14, profiles of the head; fig. 13, exhibiting the left 

 side, and fig. 14, the right side. 



Fig. 15, the head, viewed from above. 

 Fig. 16, the head, seen from beneath ; 



Fig. 17, a front view of the same. 

 Fig. 18, the vent and preanal scutellae. 

 Fig. 19, a group of dorsal scales. 



PLATE IX. 



Fig. 1, represents Pituophis wilkesi, size of life. — p. 137. 



Fig. 2, is a profile view of the head. 



Fig. 3, a front view of the same. 



Fig. 4, an upper view of the head. 



Fig. 5, a lower view of the same. 



Fig. 6, the vent and preanal scutella. 



Fig. 7, a group of dorsal scales. 



Fig. 8, represents Lodia tenuis, size of life. — p. 122. 



Fig. 9, is a profile of the head. 



Fig. 10, an upper view of the head. 



Fig. 11, the head, from beneath. 



Figs. 9-11, are double the size of life, for the purpose of showin 

 more accurately the various plates. 



PLATE X. 



Fig. 1, represents Doliophis flaviceps, size of life. — p. 176. 



Fig. 2, is a side view of the head. 



Fig. 3, an upper view ; and, 



Fig. 4, an under view of the same region. 



Fig. 5, exhibits the vent and adjoining scutellae. 



Fig. 6, represents Contia mitis, size of life. — p. 125. 



Fig. 7, a profile of the head. 



Fig. 8, the head viewed from above. 



Fig. 9, the head seen from beneath. 



Fig. 10, a front view of the same region. 



Fig. 11, a group of dorsal scales. 



Fig. 12, the vent and preanal scutella. 



Figs. 7-12, are somewhat magnified. 



