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



1 — Polyplax afflnis (Burmeister). From Apodemus sylvati- 

 cus (Europe). Also from f Apodemus agrarius (Eu- 

 rope). 



1839. Pediculus afflnis Burmeister, Gen. Rhyn., No. 



10. 

 1842. Hcematopinus afflnis Denny, Mon. Anopl., p. 36. 

 1864. Pediculus afflnis Nitzsch, Zeit. f. ges. Naturw., 



Vol. 23, p. 22. 

 1874. Hcematopinus af finis Giebel, Ins. Epizoa, p. 39; 



pi. 1, f. 9. 

 1880. Hcematopinus acanthopus var. afflnis Piaget, 



Les Ped., p. 639. 

 1904. Polyplax afflnis Enderlein, Zool. Anz., Vol. 28, 



p. 142. 

 1908. Polyplax afUnis Dalla Torre, Gen. Ins., Anopl., 



p. 13. 

 1912. Polyplax afflnis Fahrenholz, 2-3-4th Jahresb. 



Niedersach. Zool. Ver., pp. 39-42, f. 13-15. 



2 — Polyplax auricularis Kellogg & Ferris. Type from Pero- 

 myscus maniculatus rubidus (California, U. S. A.). Also 

 from Peromyscus sitchensis prevostensis (Forrester Is., 

 Alaska), P. maniculatus gambeli and Onychomys torridus 

 pulcher (California) and 0. leucogaster arcticeps (Colo- 

 rado, U. S. A.). 



1915. Polyplax auricularis Kellogg & Ferris, Anopl. 

 & Mall, of N. Am. Mam., pp. 13-15, t. f. 2; pi. 

 1, f. 4; pi. 4, f. 8. 



1916. Polyplax auricularis Ferris, Psyche, Vol. 23 (in 

 press). 



3 — Polyplax brachyrrhynchus Cummings. From A corny s ca- 

 harinus (Egypt). 



1914. Polyplax brachyrrhynchus Cummings, Proc. 

 Zool. Soc. London, pp. 246-251, t. f. 1-3, 13-14. 

 4 — Polyplax clavicornis (Nitzsch). From Meriones sp. 

 (Northern Africa). 



1864. Pediculus clavicornis Nitzsch, Zeit. f. ges. Na- 

 turw., Vol 23, p. 32. 

 1869. Hcematopinus clavicornis Nitzsch & Giebel, 

 Ibid., Vol. 28, p. 397. 



