56 COLEOPTERA RHYNCHOPHORA. 



These all agree in bodily form, and the cf' s (Pike's Peak 

 and Wallace, Kansas), agree in the form of the hind tibiae. 

 In none of these is the vestiture quite so dense as in the 

 type, and there is some small variation in the relative 

 lengths of the second and third funicular joints, the second 

 being distinctly shorter and not much longer than the third in 

 the Dakota example. Some of the other specimens are, how- 

 ever, intermediate in this respect, and its value therefore 

 seems doubtful. Sphaeralciae should be referred to the sub- 

 genus Cnemocylhis because of the modified cf hind tibiae, 

 which, in fact, are precisely of the same type as in helianthi. 

 This latter is a stouter species, with whiter vestiture, which 

 is more hair-like toward the abdominal apex, and with more 

 elongate second and third funicular joints. I have recently 

 seen specimens of sphaeralciae placed with hirtus in the Dietz 

 Collection. In this latter species the scales are narrow and 

 linear, in fact LeConte in his description speaks of the vesti- 

 ture as "coarse scarcely squamiform pubescence." 



A. cycliferus n. sp. — Narrowly oval, piceous, legs and antennae 

 rufous, club fuscous ; clothed very densely throughout with overlapping 

 broadly oval or nearly circular white scales, intermixed with scattered 

 darker scales varying from pale brown to blackish purple in color, 

 these darker scales aggregated most noticeably in two imperfect discal 

 pronotal vittae and in an elongate discal elytral spot at about the poste- 

 rior third, and less evidently in a subbasal spot on either side of the 

 suture. Beak about one-fourth longer than the prothorax, polished 

 and rather finely sparsely punctate, subsulcate at sides basally, base 

 squamose for a short distance. Antennae inserted at about two-fifths 

 from the apex in the 6^ , just perceptibly beyond the middle in the 9 ; 

 second funicular joint as long as the next two (c5^), distinctly less so 

 (9), the third and fourth joints each a little longer than wide, the 

 third slightly longer than the fourth. Prothorax three-fourths as long 

 as wide, sides broadly arcuate and subparallel in basal half, moder- 

 ately convergent and evidently though not strongly constricted apically ; 

 surface completely concealed by the vestiture. Elytra at base very 

 little wider than the thorax, gradually feebly wider posteriorly, widest 

 at about the middle ; striae invisible. Front thighs with a small acute 

 tooth, middle and hind thighs not visibly toothed. Front and middle 

 tibiae slightly incurved at apex in both sexes ; hind tibiae regularly 

 and more strongly curved in the cf, nearly straight in the 9 . Ungual 

 teeth short and not approximate at their tips. Length, 2.3-2.6 mm. ; 

 width, .85-1 mm. 



