VIII LIST OF ILLUSTRATIONS 



A NEW FOSSIL REPTILE FROM THE TrIASSIC OF NeW JeRSEY 



By Charles W. Gilmore 



Facing page 



1—3. Hypsognathus fenneri, new species 8 



The scorpions op the western part of the United States, with 



NOTES ON those OCCURRING IN NORTHERN MeXICO 



By H. E. Ewing 



1-2. Scorpions of western United States 24 



New Vicksburg (Oligocene) mollusks from Mexico 



By C. Wythe Cooke 



1-2. Vicksburg mollusks from Mexico 12 



a prehistoric pit house village site on the columbia river at 

 Wahluke, Grant County, Wash. 



By Herbert W. Krieger 



1. Hand pestles of stone 30 



2. Types of arrow and spear heads 30 



3. Types of arrowheads 30 



4. Hammerstones and scaling knives 30 



5. Objects of personal adornment 30 



6. Decorated objects of stone, bone, horn, and wood 30 



7. White bluffs escarpment at Wahluke, Wash., and the Columbia River 



at Wahluke, Wash 30 



A revision of the lizards of THE GENUS CtENOSAURA 



By John Wendell Bailey 



1. Head and body of female of Ctenosaura acanthura 56 



2. Sacral region and tail of female of Ctenosaura acanthura 56 



3. Half-grown male of Ctenosaura acanthura 56 



4. Adult male of Ctenosaura acanthura 56 



5. Adult male of Ctenosaura hemilopha 56 



6. Stuffed skin of female of Ctenosaura brachylopha 56 



7. Head and body of adult male of Ctenosaura pectinata 56 



8. Adult male of Ctenosaura pectinata 56 



9. Adult male of Ctenosaura pectinata 56 



10. Adult female of Ctenosaura pectinata 56 



11. Femoral pores of adult male of Ctenosaura pectinata 56 



12. Adult male of Ctenosaura brevirostris 56 



1 3. Half-grown male of Ctenosaura brevirostris 56 



14. Adult female of Ctenosaura parkeri 56 



15. Heads of Ctenosaura parkeri (left) and C. brevirostris (right) 56 



16. Adult male of Ctenosaura similis 56 



17. Half-grown male and young male of Ctenosaura similis 56 



18. Adult female of Ctenosaura similis 56 



19. Adult male of Ctenosaura similis 56 



20. Typical habitats of Ctenosaura similis 56 



21. Adult female of Ctenosaura bakeri 56 



