34 IXODOIDEA, OR TICKS, OF THE UNITED STATES. 



Haemaphysalis chordeilis Packard. 



Female. — Shield, legs, and palpi rather uniform reddish brown, 

 abdomen more yellowish brown. Capitnlum (PL IV, fig. 11) 

 nearly twice as broad as long, hind angles barely prominent; porose 

 areas large, and limited by a ridge each side; palpi broad, second 

 joint with a prominent sharp tooth on outer side at base, .the two 

 palpi together broader than long. Shield (PL IV, fig. 11) about as 

 broad as long, strongly and densely punctate, the punctures most 

 numerous at the submedian .grooves. Legs rather short, tarsi (PL 

 IV, fig. 11) shorter than in H. lejjoris-'palusti'is., coxse (PL IV, fig. 

 11) with distinct projections behind; that on coxa I is fully one-half 

 the width of that joint. Body striate, and with scattered, broad, 

 deep punctures. Stigmal plate (PL IV, fig. 11) longer than broad, 

 with a short but distinct dorsal prolongation, its surface finely granu- 

 lated. 



Length of shield, 1 mm. ; whole specimen, 5.5 mm. 



The types, two engorged females from a nighthawk at Milton, 

 Mass., are in the Museum of Comparative Zoology, where I have 

 studied them. I have also seen a female from Taftsville, Vt., from a 

 turkey. 



Neumann, in his " Revision," had placed this species as a synonym 

 of H. leporis-palustris, but it is plainly distinct. I have not seen the 

 male, but a nymph from the killdeer, taken at Fort Collins, Colo., 

 may belong to this species. 



Genus RHIPICEPHALUS Koch. 



Venter showing a curved groove behind anus and a median line to 

 the posterior margin of body. Capitnlum angulate on sides; porose 

 areas triangular, approximate. Palpi .short and broad, no trans- 

 verse ridges. Shield without markings; ocelli present. Abdomen 

 showing festoons behind. Coxa I strongly bidentate behind; hind 

 coxa not enlarged in male. Stigmal plate subcrescentic or reniform. 

 Male with distinct anal plates. Tarsi II, III, and IV indistinctly 

 divided, the basal part shorter than the apical part; no distinct 

 tooth-like claw at apex. The palpi have on the lower edge a series 

 of long flattened teeth, as represented in the figure. 



Type. — R. sanguineus Latreille. 



We have but one species of this genus, a form very similar to the 

 type species. 



Rhipicephalus texanus n. sp. 



Male. — Red-brown, without markings; legs paler. Capitnlum 

 (PL V, fig. 1) broad, lateral angles acute, hind angles barely pro- 

 longed; palpi (PL V, fig. 2) very short, not as long as half the width 

 of the capitnlum, but as long as the hypostome, their tips acute. Dor- 



