ART. 20. 



STUDIES OF THE BITING LICE EWING. 



33 



Genital armature of male very long and slender; basal plate extend- 

 ing forward to the middle of fourth abdominal segment, broadened 

 at its base and narrowest at its middle; parameres slender, curved out- 

 ward and truncate at their attenuated tips. Each paramere with a 

 small spine at about one-fourth its length from the tip and two 

 smaller, divergent ones at its tip. 



Length of female, 1.25 mm.; width, 0.27 mm. Length of male, 

 1.09 mm. ; width, 0.22 mm. 



Type host and type locality. — Cavia anolaimae from Paramo 

 del Sancturio, Boj^aca, Colombia. . v 



Type slide.— C^t. No. 23759, U.S.N.M. \\ \Y\ 



Fm. It). — Glikicola distincta. Basal plate of fe- 

 j!ale genital armatuke. 



Fu;. 17. — Gliricola 

 p o R c E L L I . Left 

 antenna from be- 

 low. 



Described from four females and two males on a skin of Cavia 

 anolaimae (Cat. No. 236907, U.vS.N.M.) from Paramo del Sancturio, 

 Boyaca, Colombia, September, 1920. 



The Gliricola forms that occur on the different Caina species are 

 so much alike that it is hard propeily to detect individual variations 

 from those correlated definitely with a host relationship. The form 

 from C. anolaimae is different, however, in this respect as it differs 

 from those on C. cobaya, O. tscJmdii, C. cutleri, and C. rufescens in 

 several characters of the genitalia as has been indicated in the key to 

 two of the species of Glincola. 



GLIKICOLA PORCELLI (Linnaeus). 



Plate 1, fig. S, and text figs. 15 and 17. 

 Head longer than broad, posterior margin rounded ; antennal fos- 

 sae long and deep; antennae (fig. 17) moderate, last segment pedicel- 

 late, its capitate portion rounded at the base, truncate distally and 

 laterally with a deep excavation. This last segment is conspicuously 

 scaled and has about five terminal setae: palpi extending beyond 

 the margin of head bv about the full length of last segment. Outer 



