26 IXODOIDEA, OR TICKS, OF THE UNITED STATES. 



various wild animals; from Norfolk, Va., on cattle; McGregor, Iowa; 

 Texas (Belfrage Coll.) ; North Carolina, and Texas (Marx Coll.) ; 

 Maryland, on sheep; Indiana. 



This species is readily separated from /. vicinus by smaller porose 

 areas and by the dark shield. It has been confused with /. rhinus 

 by Neumann in the Marx collection; however, Neumann described 

 the same species as new, /. affiiis, from Costa Rica, and I have ex- 

 amined some of his type material. 



Ixodes brunneus Koch. 



Fe nude. —Shield brown, paler through the middle; palpi brown, 

 pale on base; legs pale brownish yellow, tarsi paler, other joints 

 marked with brown ; abdomen brown, usually paler than the shield. 

 Capitulum (PI. Ill, fig. d) small, hind angles not prominent; porose 

 areas very large, angulate in front, separated by about one-half their 

 length ; palpi very slender, second joint plainly longer than last, lat- 

 ter fully twice as long as broad. Shield (PI. Ill, fig. 9) about one 

 and one-half times longer than broad, Avidest rather before the mid- 

 dle and tapering each way, no lateral carina% but submedian grooves 

 distinct, surface with many fine punctures, lateral lobes wrinkled. 

 Legs slender, tarsus I very long, about twice as long as the preceding 

 joint, tapering to tip, hind tarsus also tapering, but not so much 

 longer than the metatarsus; coxie I with a large, short spine at base 

 and all coxie with a distinct tooth at apex behind; trochanters II 

 and III swollen behind. Body striate and punctate, with numerous 

 hairs; anal furrows parallel beliind; stiguuil plate large, circular, and 

 its surface with quite large granules. 



Length of female shield, 1.5 mm. 



Two females from a tufted tit, Raleigh, N. C. (Brimley Coll.) ; 

 also one female from hermit thrush, Baltimore, Md. (Hassall Coll.). 

 This is the specimen named by Neumann Ixodes frontalis. At that 

 time, however, he had not seen the type of /. brunneus. Later, in a 

 key, he separates them on the ground that brunneus has the tarsi 

 attenuated gradually, while in f)'ontalis they are narrowed suddenly 

 before the tip. In this specimen the tarsi are certainly not attenuated 

 suddenly, but are like the North Carolina specimens. There is 

 another specimen, in the collection of the Massachusetts Agricultural 

 College, which was taken from the neck of a " chipping bird," Maj^ 1. 

 1895, probably from Amherst, or near by; and the Ixodes keUoggi, 

 recently described by Nuttall and Warburton, is evidently the same 

 species, although the description is very brief. Their specimens came 

 from Californian birds. Koch described the species from one female 

 from Fringilla albicoUis, from North America. I have not seen the 

 male. Evidently the species is confined to birds. 



