194 CALIFORNIA ACADEMY OF SCIENCES [Proc. 4th Ser. 



Family Geomyid^ 

 Geomys bursarius. 



Hsematopinoides squamosus Osborn (Ames, Iowa, U. S, 

 A.). 



Family Muscardinid^e 



Dryomys nitedula (Myoxus nitella). 



Polyplax plenroph?ea (Btirm.) (Europe). 



Family Murid^ 



Subfamily Murine 

 Cricetulus ph^eus. 



Linognathoides citelli Cumm. (Transcaspia). 



Note: Cricetulus is probably not the normal host of 

 this species. 

 Mus musculus. 



Polyplax serrata (Burm.) (Europe). 

 Hoplopleura acanthopus (Burm.) (Europe). 

 Hoplopleura hesperomydis (Osborn) (California, U. S. 

 A.). 

 Mus chrysophilus. 



Polyplax gracilis Fahr. (Mfongdsi, Zululand, South Af- 

 rica). 

 Mus coucha. 



Hoplopleura intermedia K. & F. (Mfongosi, Zululand, 

 South Africa). 

 Mus barbarus. 



Polyplax ? spiculifera (Gerv.) (Algiers). 

 Apodemus agrarius (Mus agrarius). 



Polyplax affinis (Burm.) (Europe). 

 Apodemus sylvaticus (Mus sylvaticus). 

 Polyplax affinis (Burm.) (Europe). 

 Polyplax spinulosa (Burm.) (Europe). 

 Micromys minutus (Mus minutus). 

 Hoplopleura longula (Neum.). 

 Polyplax gracilis Fahr. (Europe). 

 Epimys norvegicus (Mus norvegicus, Mus decumanus, Wan- 

 derratte). 

 Polyplax spinulosa (Burm.) (Cosmopolitan). 



