DERMACENTOR NITENS NEUMANN, 51 



Female. — "WTiolly rod-brown, legs paler, and abdomen darker, no 

 white markings. Capilulnm (PL VII, fig. 10) of moderate width, 

 with the hind angles only slightly prolonged; porose areas rather 

 large, well separated, and directed more forward than in other 

 species; palpi very short, not reaching to tip of hypostome. Shield 

 (PI. VII, fig. 10) a trifle longer than broad, broadest in front of 

 middle, very finely punctured ; in middle region in front, and on the 

 sides, are irregular wrinkles. Legs rather long, teeth on coxse shorter 

 than usual; stigmal plate (PI. VII, fig. 10) nearly circular, provided 

 with ten to twenty more or less isolated granules, all of large size. 



Length of female shield, lA mm. 



This species was described from Jamaica and Santo Domingo. 

 Recently it has been taken at Brownsville and Harlingen, Tex., and 

 I have some from Fort Bowie, Ariz. In the Museum of Compara- 

 tive Zoology there are specimens from Grand Anse, Hayti, taken 

 about forty 3^ears ago. It appears to prefer horses, and usually oc- 

 curs in the ears. 



D. nitens is strongly separated from all our other species of the 

 genus. Especially noticeable is the sculpture of the stigmal plate; 

 the few impressed lines behind with the male are also peculiar. Like- 

 wise the very short palpi, shorter than the hypostome, constitute a 

 peculiar character again seen in the cattle tick, and, as in that species, 

 may indicate some habit connected with the dissemination of dis- 

 ease. 



UNPLACED SPECIES. 



Ixodes erraticus Say. 



" Body oblong-ovate, gradually narrowed before, sides hardly ar- 

 quated, with distant punctures, those behind more deeply impressed, 

 posterior margin with ten or twelve impressed lines which are ab- 

 l3reviated by a submarginal impressed line, two abbreviated lines be- 

 fore; head, posterior edge transversely rectilinear, angles extended 

 backward abruptly, and subacute; rostrum rather short; palpi oval- 

 orbicular. Found in the Southern States; the color is reddish or 

 ferruginous, with acute black lines.'' [It may be Dermacentor ni- 

 grolineatus Pack.] 



Ixodes fuscus Say. 



'• Body fuscous, ovate, punctured ; tergum with a few black, obso- 

 lete lines, and a profoundly indented submarginal line, posterior 

 marginal impressed line none; no distinct thorax; edge rounded; 

 head, posterior edge rectilinear, angles not prominent beyond the 

 rectilinear edge; eyes not visible; palpi suboval, terminal joint rather 

 longer than the preceding one. A common species." [A true Ixodes, 

 and probably the male of /. sca'pularis Say.] 



