OF WASHINGTON. 



171 



Female. Capitulum and legs reddish brown; shield mostly white on 

 sides and behind, leaving much of the middle area unmarked, abdomen 

 dark brown. Capitulum broad, rather broader than in D. vcnuslus, 

 with smaller porose areas, distinctly separate, and less pear-shaped; 

 shield of the general shape of D. vennstus, a little more narrow, fully 

 as long as broad, coarsely punctate on sides, much more minutely in 

 middle and behind. 



Length of female shield, 1.5 mm. 



Specimens from Mountain Home, Idaho ; Prescott, and 

 Olympia, Washington. 



Close to D. venustus, but in the male the stigmal plate (fig. 

 12, upper figure) has the projection pointing more backward, 

 and in the female (fig. 12, lower figure) the projection is more 

 obliquely upturned. Smaller than D. venustus, and with less 

 white, especially noticeable in the male. 



Another new tick adds a genus to our fauna ; it is the fol- 

 lowing : 



Aponomma inornata, n. sp. 



Dark mahogany-brown, unmarked ; legs paler reddish brown. Body 

 about one and two-thirds as long as broad, as broad behind as in front, 

 surface minutely striate and more coarsely wrinkled; three deep longi- 



FIG. 12. Derma- 

 center modestus: Stig- 

 mal plate of male 

 above, of female be- 

 low. 



FIG. 13. Aponomma inornata: Shield 

 at left, stigmal plate at right. 



tudinal furrows on posterior part of the dorsum, limited by a sub- 

 marginal furrow; the festoons distinct. Shield (fig. 13) as broad as 

 long, deeply emarginate in front, densely and deeply pitted, especially 

 on the middle area, lateral carinse distinct, curved; no trace of eye-like 

 spot. Capitulum (fig. 14) subtriangular, the porose areas rather elon- 

 gate, separated by a narrow space. Legs of moderate length ; coxae 

 all small, coxa I with two subcqual spines behind, others unarmed ; 

 tarsus I one and one-third longer than the preceding joint, in other 



