Vol. VI] FERRIS— ANOPLURA 169 



(1912) ; Kellogg & Ferris, Anopl. and Mall, of N. Am. Mam., 

 pp. 35-36. 



Acanthopinus Mjoberg, Ark. f. Zool., Vol. 6, pt. 13, pp. 

 160-161 (1910). 



Antennge dissimilar in the sexes, the male with a preaxial 

 process or a pair of spines at the apex of the third antennal 

 segment. First antennal segment in both sexes usually with 

 the distal post axial angle more or less produced and bearing 

 a stout spine or with a stout spine on the posterior margin. 

 Anterior legs small, with slender claw, middle and posterior 

 legs larger. Abdomen with or without chitinized tergal and 

 sternal plates. Abdominal tergites and sternites of the female., 

 for the most part, with two transverse rows of spines, male 

 with lesser number, bearing two rows of spines. Posterior 

 margin of second tergite of male always distinctly emarginate 

 with a closely set group of spines of various lengths at the 

 end of this emargination. Pleural plates present. Spiracles 

 small. Gonapods very short. 



Recorded from Sciuridce and Petauristidce (Rodentia). 



Type of the genus N eohcematopinus sciuropteri (Osborn). 



1 — N eohcematopinus antennatus (Osborn). Type from Sci- 

 urus cinereus var. ludovicianus (probably 5. niger rufi- 

 venter), (Iowa, U. S. A.). Also from Sciurus griseus 

 griseus (California, U. S. A.). 



1891. Hcematopinus antennatus Osborn, Bui. 7, o. s., 



U. S. Dept. Agr., Div. Ent., p. 25, f. 13. 

 1896. Hcematopinus antennatus Osborn, Bui. 5, n. s., 

 U. S. Dept. Agr., Div. Ent., pp. 183-184, f. 106. 

 1904. Polyplax ? antennata Enderlein, Zool. Anz., 



Vol. 28, p. 143. 

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



Anopl., p. 13. 

 1910. Acanthopinus antennatus Mjoberg, Ark. f. 



Zool., Vol. 6, pt. 13, p. 161. 



1915. N eohcematopinus antennatus Kellogg & Ferris, 



Anopl. & Mali, of N. Am. Mam., pp. 36-37; 



t. f. 14a-14b; pi. 5, f. 10; pi. 6, f. 5. 



la — N eohcematopinus antennatus var. semifasciatus Ferris. 



Type from Sciurus douglasi albolimbatus (California, U. 



S. A.). Also from S. douglasi mollipilosus (California). 



