Variations of the above characters are as follows: Small 

 pvinctations may be present and rarely may be obtrusive enough 

 to suggest H. iiimeltatum ; also a line of large punctations ex- 

 tending anteriorly from the apex of the lateral grooves may sug- 

 gest H. impeltatum . In engorged specimens, at least, differences 

 in the posterior area of the scutum separate such specimens. In 

 some specimens a dense field of small pvinctations may be present 

 posteriorly, suggestive of H. excavatum . The subanal shields are 

 sometimes divided into two pairs, but very few such specimens 

 have been seen during the present study. In unengorged males, 

 the subanal shields are closer to the central axis of the anal 

 shields than otherwise, but their center is still exterior of 

 the central axis of the adanals. Color varies from yelloxash 

 brown through dark brovm to brownish black. The legs are usually 

 paler than the scutum and the segments may be ringed by a paler 

 band. 



Females ; Typical females may be recognized by (l) the nar_ 

 rowly elongate and triangular genital aperture, which in profile 

 slopes gradually, (2) the comparatively wide scutal outline 

 (length-width ratio about equal, (3) few, large, scattered punc- 

 tations and frequent rugosity of the scutal surface, and (A) 

 large size. The palpi are usually twice as long as their com- 

 bined width. The color varies from yellowish brown to black; 

 the legs are usually paler than the body and may be concolorous 

 or ringed. 



The genital aperture is most distinctive and hardly variable. 

 In newly molted females its outline is slightly concave sub- 

 apically, but in engorged specimens the lateral margins are 

 usually straight. The narrowly triangular outline is apparent- 

 ly never lost. A narrow, raised integumental fold surroimds 

 the apron. 



The scutal outline is widest just anterior of the eyes. 

 The wide, deep, long cervical grooves are usually rugose as is 

 also the scutal surface of most engorged specimens. From ten 

 to twenty (average thirteen) large punctations are scattered 

 over the central field and an equal number occur in each scapular 

 field. Average newly molted specimens measure about 5.5 mm. long 

 by 3.2 mm. wide, but engorged individuals may be 30.0 mm. long and 

 15.0 mm. wide. Scutal length is about 3.2 mm., width about 2.8 mm. 



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