Vol. VI] FERRIS— ANOPLURA 151 



2 — Fahrenholzia tribulosa Ferris. Type from Perognathus 

 calif amicus (California, U. S. A.). Also from Perognath- 

 us formosus (California). 



1916. Fahrenholzia tribulosa Ferris, Psyche, Vol. 23 

 (in press). 



Genus Hcemodipsus Enderlein 



Hcemodipsus Enderlein, Zool. Anz., Vol. 28, pp. 139, 143 

 (1904) ; Dalla Torre, Gen. Ins., Anopl, p. 15 (1908) ; Mjo- 

 berg, Ark. f. Zool., Vol. 6, pt. 13, p. 165 (1910) ; Kellogg & 

 Ferris, Anopl. and Mall, of N. Am. Mam., pp. 27-28 (1915). 



Hcematopinus (Polyplax) Neumann, Arch, de Par., Vol. 

 13, p. 536 (1909). 



Anterior legs small with slender claw, middle and posterior 

 legs larger, sub-equal, with heavier claws. Head broad, thorax 

 very small. Abdomen entirely without chitinized tergites and 

 sternites, each segment with a single transverse row of spines 

 or hairs. Pleural plates very small or wanting. Gonapods 

 very short. 



Recorded only from Leporidce (Rodentia). 



Type of the genus Hcemodipsus lyriocephalns (Burm.). 



1 — Hcemodipsus lyriocephalns (Burm.). Type from Lepus 

 timidus (Europe). Also from L. europceus occidentalis 

 (Europe). 



1839. Pediculus lyriocephalns Burmeister, Gen. Rhyn. 



No. 11, f. 7. 

 1842. Hcematopinus lyriocephalns Denny, Mon. 



Anopl, pp. 27-28; pi. 24, f. 4. 

 1864. Pediculus lyriceps Nitzsch, Zeits. f. ges. Na- 



turw., Vol. 23, p. 24. 

 1874. Hcematopinus lyriocephalns Giebel, Ins. Epizoa, 



pp. 39-40; pi. 2, f. 2. 

 1880. Hcematopinus lyriocephalns Piaget, Les Ped., 



pp. 641-642; pi. 52, f. 5. 

 1904. Hcemodipsus lyriocephalns Enderlein, Zool. 



Anz., Vol. 28, p. 143. 

 1908. Hcemodipsus lyriocephalns Dalla Torre, Gen. 



Ins., Anopl., p. 15. 



