Index 
9 
Page 
Sphecodes : . , 44 
Sphecodinae ....'. 44 
Split Rock , 3 
Stelis 62 
Synhalonia 68 
Teiidae 144 
Tijeras canon loi 
Trachyte cones in the Rio Grande valley 227 
Uma 120 
U ta , key to species 137 
Valley of the Rio Puerco 97 
Weinzirl, John. Bacteria in cheese 149 
Xenoglossa 67 
Xyloclopa 71 
Xylocopinae . 71 
