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



1 — Polyplax afUnis (Burmeister). From Apodemiis sylvati- 

 cus (Europe). Also from ^Apodemiis agrarius (Eu- 

 rope). 



1839. Pedicidus affinis Burmeister, Gen. Rhyn., No. 



10. 

 1842. HccJiiatopinus affiiiis Denny, Mon. AnopL, p. 36. 

 1864. Fcdiculus affinis Nitzsch, Zeit. f. ges. Naturw., 



Vol. 23, p. 22. 

 1874. Hccmatopinus affinis Giebel, Ins. Epizoa, p. 39; 



pi. 1, f. 9. 

 1880. Hcematopinus acantJwpns var. affinis Piaget, 



Les Ped., p. 639. 

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



p. 142. 

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



p. 13. 

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



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



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

 mysciis maniculatus rnbidus (California, U. S. A.). Also 

 from Pcroniyscus sitchoisis prevostcnsis (Forrester Is., 

 Alaska), P. nianicnlatus ganibcli and Oiiychoniys torridus 

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

 rado, U. S. A.). 



1915. Polyplax auricidaris 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 Acomys ca- 

 haritms (Egypt). 



1914. Polyplax brachyrrhynchus Cummings, Proc. 

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

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

 (Northern Africa). 



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

 turw., Vol. 23, p. 32. 

 1869. Hccmatopinus clavicornis Nitzsch & Giebel, 

 Ibid., Vol-. 28, p. 397. 



