Index to Genera. 



83 



Ophisaurus 22 

 Oribata 54, 73 

 Or this 39, 50 

 Orthoceras 51 



Parallelodus 43, 50 

 Phrynosoma 22 

 Pityophis 25 

 Plestiodon, 23 

 Plethodon 14, 17 

 Primitia 51 

 Proteus li 

 Psiloconcha 50 

 Pterotheca 45, 51 

 Pterygometro pus 46-47, 51 

 Ptychopyse 51 



Rana 14-15, 18 

 Rhinodictya 50 

 Rhizoglyphus 54, 75 

 Rhyncholophus 54-61 

 Rhytima 50 



Scaphiopus 14, 20 

 Sceloporus 13-16, 22 

 Siren 18 

 Sistrurus 14, 27 

 Smaris 54, 61 

 Spelerpes 14-17 



Sphenolium 50 

 Sternothoerus 20 

 Storeria, 14, 24 

 Streptelasma 50 

 Strophomena 50 



Tantilla 26 



Technophorus 47-48, 51 

 Terra pene 14, 21 

 Testudo 12 



Thamnophis 11-12, 14-16,24 

 Trionyx 14 



Trombidium 54, 62-63 

 Tropidoclonium 24 

 Tropidonotus 14-15, 23-24 

 Typhlomolge li 

 Typhlotritonli, 14 

 Tyroglyphus 54, 74 



Uropoda 54, 69-71 

 Uroseius 54, 72 



Virginia 26 



Whiteavesia 50 



Zamesis 14, 25 

 Zygospirj, 39, 50 



