590 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.xxih. 



ACARINA. 



ARGAS SANCHEZI Duges. 



Catalina Springs, April; also Deming, New Mexico, July. Known 

 as the ''adobe tick." 



IXODES, species. 



Catalina Springs, April. On house bat; not a.dult, and therefore 

 can not be identified with certaint3^ 



EXPLANATION OF PLATE XXII. 



Fig. L Thargalia luctnosa, spider and vulva. 



2. Vhelanopn arizonenitis, palpus. 



3. Prosthesima arizonensis, vulva. 



4. Dipcena parvula, spider and vulva. 



5. Epeira arizonensis, male palpus. 



6. Plectreurys Iristis, eyes. 



7. Prostliesima schwarzi, vulva. 



8. Sparassus minax, male palpus. 



9. Chelifer hubbardi, palpus. 



10. Philodromus margindlus, spider and vulva. 



11. Chemmis unicolor, vulva. 



