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



Genus Lmognathoides Cnmmings 



Cummings, Bui. Ent. Res., Vol. 5, pp. 159-160 (1914); 

 Kellogg & Ferris, Anopl. & Mall, of N. Am. Mam., pp. 23- 

 24 (1915). 



In general similar to Polyplax. Abdomen without chitin- 

 ized tergal and sternal plates or with these very much reduced. 

 Pleural plates present. Spiracles small. 



Recorded from Muridas and Sciuridas (Rodentia). 



Type of the genus Linognathoides citelli Cummings. 



1 — Linognathoides citelli Cummings. From Citellus lepto- 

 dactyhis and ? Cricetulus phceiis (Transcaspia). 



1914. Linognathoides spermophili Cummings, Bui. 

 Ent. Res., Vol. 5, pp. 160-163, t. f. 3. 



1916. Linognathoides citelli Cummings, Ann. Mag. 

 Nat. Hist., ser. 8, Vol. 17, p. 107. 

 2 — Linognathoides inornatus Kellogg & Ferris. Type from 

 Neotoma cinerea occidentalis (California, U. S. A.). Also 

 from A'', cinerea cinerea and ? N. fuscipes streatori (Cali- 

 fornia). 



1915. Linognathoides inornatus Kellogg & Ferris, 

 Anopl. & Mall, of Am. Mam., pp. 25-27, t. f. 

 10; pi. 2, f. l;pl. 4, f. 7; pi. 5, f. 15; pi. 6, f. 3. 



1916. Linognathoides inornatus Ferris, Psyche, Vol. 

 23 (in press). 



3 — Linognathoides Iceviusciilus (Grube). Type from Citel- 

 lus eversmanni (Jakutsk, Siberia). 



1851. Pediculus Iceviusculus Grube, Middendorfif's 



Reise, Vol. 2, p. 498; pi. 32, f. 5 (figure labeled 



P. spermophili). 

 1874. Hceniatopinus l(^viuscuhis Giebel, Ins. Epizoa, 



p. 38. 

 1880. LIceniatopinus Iceviuscidus Piaget, Les Ped., p. 



641. 

 1904. Pohplax Iceviuscidus Enderlein, Zool. Anz., 



Vol 28, p. 142. 

 1908. Polyplax IcBviitsculus Dalla Torre, Gen. Ins., 



Anopl., p. 13. 

 1910. Polyplax Iceviuscula Mjoberg, Ark. f. Zool., 



Voi 6. pt. 13, p. 160. 



