^I'T. 20. STUDIES OF THE BITING LICE — EWING. 29 



Type.—C-At. No. 23757, U.S.N.M. 



Described from the holotype, a female specimen, complete and 

 unbroken except for the antennae, on a female skin of Kerodon spixii 

 (Cat. No. 123391, U.S.N.M.) from Lamaras, Bahia, Brazil, May 

 15, 1903, by A. Robert. 



The relationship of this species to those of Macrogyropus which 

 are found on American pigs (peccaries) is indicated not only by the 

 presence of two claws on the front tarsus, but by the size and shape 

 of the prothorax, by the shape of the meso, metathorax and the 

 abdomen, but the size and arrangement of the body setae and, finally, 

 by the similarity in the species in the last tAvo pairs of legs. 



Gliricolinae, new subfamily. 



Members of this subfamily are at once distinguished from all 

 others by the very unusual character of the legs. The tarsi are 

 greatly reduced, the tarsal claw is wanting and in its place is found 

 a pulvilluslike appendage of the reduced second tarsal segment. The 

 second and third pairs of legs are enlarged with the femora and 

 tibiae curved and transversely striated. These legs are, as far as the 

 writer has observed, used as hair-claspers, those on one side of the 

 body apposing those on the other side, or the tibia of one leg acting 

 in apposition to the femur of the same leg. The head, in keeping 

 with the whole body, is long and slender, and below has two well- 

 developed hornlike structures, that, according to Mjoberg, are capa- 

 ble of both longitudinal and lateral motion. These hornlike struc- 

 tures are the outer hypopharyngeal chitinizations and probably are 

 used in cutting or piercing. 



Contained genera. — Gliricola Mjoberg and a new genus to be 

 here established. 



PARAGLIRICOLA, ncAV genus. 



Body long and slender. Head longer than broad, with posterior 

 margin semicircular; temples with a transverse row of setae; ante- 

 rior horns of hypopharyngeal chitinization unarmed. Prothorax 

 much smaller than meso-metathorax, and provided with a transverse 

 row of minute, dorsal setae; meso-metathorax with two such trans- 

 verse rows. Abdomen the broadest part of the body and with each 

 segment, except the last, provided dorsally with a single, transverse 

 row of exceedingly minute setae. Tarsi Avith second segment greatly 

 reduced and clawless, but with a clawlike seta developed on the outer 

 distal aspect. 



Genotype and its host species. — Paragliricola quadrisetosa., new 

 species, from Cavia tschudii. 



Only a single species is included i" this genus which differs from 

 Gliricola fundamentally in its unarmed hypopharyngeal chitiniza- 



