U.S. NATIONAL MUSEUM 



PROCEEDINGS. VOL. 82. ART. 30 Pl^J 4 



New Species of Parasitic Mites. 



1, Ceratonyssus occidentalis, ventral view. 2, Dermanyssus ei'otomydis, ventral view of mouth parts. 3, D. 

 pTogncphilus, ventral view of mouth parts. 4, Sommatericola orientalis, ventral view. 5, Cydacarus 

 aherram, ventral view. 6, C. aberrnns, detail view of peritreme. (Drawings by Eleanor A. Carlin and 

 Mrs. Katherine Munroe.) 



