Vol. VI] FERRIS— AN OPLURA 149 



petulans and 5". hudsonicus Vancouver ensis (Alaska) and 

 .S*. douglasi albolimbatus (California, U. S. A.). 



1818. Pediculus sphcerocephalus Nitzsch, Germar's 



Mag., Vol. 3, p. 305. 

 1842. Hcematopinus sphcerocephalus Denny, Mon. 



Anopl., p. 36. 

 1864. Pediculus sphcerocephalus Nitzsch, Zeit. f. ges. 



Naturw., Vol. 23, p. 27. 

 1874. Hcematopinus sphcerocephalus Giebel, Ins. Epi- 



zoa, pp. 35-36; pi. 1, f. 4. 

 1880. Hcematopinus sphcerocephalus Piaget, Les Ped., 



p. 640-641. 

 1904. Polyplax ? splicer ocephala Enderlein, Zool. 



Anz., Vol. 28, p. 143. 

 1908. Polyplax ? sphcer ocephala Dalla Torre, Gen. 



Ins., Anopl., p. 14. 

 1910. Polyplax ? sphcer ocephala Mjoberg, Ark. f. 



Zool., Vol. 6, pt. 13, pp. 159-160. 

 1912. Enderleinellus sphcerocephalus Fahrenholz, 



Zool. Anz., Vol. 39, p. 56. 

 1912. Enderleinellus sphcerocephalus Fahrenholz, 

 2-3-4th lahresb. d. Niedersach. Zool. Ver., pp. 

 52-53, f. 22-23; pi. 2, f. 5, 6, 7. 

 1916. Enderleinellus sphcerocephalus Ferris, Psyche, 

 Vol. 23 (in press). 

 5 — Enderleinellus suturalis (Osborn). Type from Citellus 

 franklini or C. tridecemlineatus (Iowa). Also from C. 

 oregonus and C. mollis (Nevada, U. S. A.), C. townsendi 

 (Washington, U. S. A.), Citellus beldingi, Xerospermophi- 

 lus tereticaudns and Ammospermophilus nelsoni (Califor- 

 nia, U. S. A.), Cynomys gunnisoni and C. leucurus (Colo- 

 rado, U. S. A.). 



1891. Hcematopinus suturalis Osborn, Bui. 7, o. s., U. 



S. Dept. Agr., Div. Ent, p. 27, f. 15. 

 1896. Hcematopinus suturalis Osborn, Bui. 5, n. s., U. 



S. Dept. Agr., Div. Ent., p. 185, f. 109. 

 1904. Polyplax ? suturalis Enderlein, Zool. Anz., Vol. 



28, p. 143. 

 1908. Polyplax ? suturalis Dalla Torre, Gen. Ins., 

 Anopl, p. 14. 



