426 



CALIFORNIA ACADEMY OF SCIENCES. [Proc. 3D Ser. 



Xanthotricha 30 



minor 31 



Xema sabinii 358 



Xiphandrium 37 



americanum 37 



barbatuni 37 



Yagansia . , 151, 152 



corralensis 153 



diversicolor 153 



gracilis 153 



Yagansia grisea 153 



longiseta 152 



michselseiii 153 



pallida 152 



papillosa 152 



robusta 153 



spatulifer 153 



i^apotecia 165, 166, 305 



ameca-mecse . .170, 202, 305-8, 227 



