ART. 20. 



STUDIES OF THE BITING LTCE EWING. 



31 



the process itself. Gonopods larjre, conspicuous, almost as broad at 

 tips as at their bases, and lying below lateral expansions of posterior 

 lobes: each gonopod with three subequal terminal setae which are 

 fully equal to the gonopod itself in length, and three smaller, un- 

 equal setae along the posterior margin; the posterior terminal seta 

 and the three marginal setae are sliglitly flattened but are hardly 

 foliaceous. First pair of legs much smaller than the others: tibia 

 I (pi. 1, fig. 7) enlarged distally and provided along its inner distal 

 margin with a row of minute setae; tarsus I 

 (pi. 1. fig. 7) with first segment broader than 

 long; second segment reduced and pulvilluslike, 

 with a few transverse striations; on the inside 

 and on the outside with a curved, clawlike seta 

 situated on chitinous tubercle. The tibiae of the 

 last two pairs of legs are more strongly curved 

 than the femora. 



Length, 1.07 mm.; width, 0.30 mm. 



2'ype host and type locaJity. — Cama tschudii 

 from I.a Raya Pass (4,267 meters, 14,000 feet), 

 Peru. 



Type.—Q^t. No. 23758, U.S.N.M. 



The holotype is a stained female specimen 

 found on a female skin of Cavia tschudii (Cat. 

 No. 194492, U.S.N.M.) , from La Raya Pass, Peru. 

 Two other female specimens are at hand which 

 appear to agree in all particulars with the holo- 

 type. One is a female specimen from skin of 

 female Cavia species (Cat. No. 236345, U.S.N.M.: 

 Biol. Surv. Collection) taken at Guamini, Buenos 

 Aires, Argentina, March 3, 1920, by A. Wetm.ore. 

 The other is a female specimen found on a female skin of Kerodon 

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



Genus GLIRICOLA Mjoberg. 



Body slender. Head longer than broad, with posterior margin 

 semicircular; anterior horns of hypopharyngeal chitinization arnied 

 at their apices with teeth and provided with serrate inner margins 

 (fig. 15). Prothorax much smaller than the meso-metathorax. 

 Typically each segment of the abdomen provided dorsally with a 

 single, transverse row of minute setae. In female, abdomen two 

 lobed. Second segment of tarsus somewhat like a pulvillus, soft and 

 transversely striated and bearing no claw-like setae. 



Genotype and its host species.— Gliricola porcelli (Linnaeus) from 

 Cavia cohaya (guinea pig). 



Fig. 14. — Pakagi.iri- 

 cola qcadrisetosa. 

 Outer chitini- 

 zations of iiyi'o- 



I'HARVNX. 



