Plate IV. 



Fig. i. Sternal plate of Hoplo pleura hesperomydis (Osborn) from 



Peromyscus maniculatus rubidas. 

 Fig. 2. Sternal plate of Hoplo pleura acanthopus var. occidentalis n. var. 



from Microtus calif ornic us. 

 Fig. 3. Sternal plate of Hoploplcura trispinosa n. sp. from Sciuropterus 



volucella. 

 Fig. 4. Sternal plate of Hoplopleura arboricola n. sp. from Eutamias 



tozvnsendi ocrogcnys. 

 Fig. 5. Sternal plate of Haemodipsus z'cntricosus (Denny) from Lepus 



calif ornic us. 

 Fig. 6. Sternal plate of Haemodipsus parvus n. sp. from Lagidium pe- 

 ruana. 

 Fig. 7. Sternal plate of Linognathoides inornatus 11. sp. from Neotoma 



cinerea occidentalis. 

 Fig. 8. Sternal plate of Polyplax auricularis n. sp. from Peromyscus 



maniculatus rubidus. 

 Fig. 9. Sternal plate of Enderleinellus suturalis (Osborn) from Citellus 



franklini. 

 Fig. 10. Sternal plate of Enderleinellus suturalis var. occidentalis n. sp. 



from C alio sp ermo philus chrysodeirus trinitatus. 

 Fig. n. Sternal plate of Enderleinellus osborni n. sp. from Citellus 



beecheyi douglasi. 

 Fig. 12. Sternal plate of Enderleinellus longiceps n. sp. from Western 



gray squirrel. 



