86 KANSAS UNIVEKSll'V gUARTEKLY. 



In T]iyridopli-r]\\ el^Iiniu'ricformis the wings, mostly clear, bear 

 scales along the costa of the foiewing of as high specialization as 

 are to be found in the family (see figs. 67, Plate X). They are most 

 abundant in the region about j^ the length of the wing from the apex. 

 The anal area is thinly scaled; here some hair-forms are present. 

 In the hindvving, scales and scale-hairs are found in the costal area, 

 in the rather large anal area, and along the outer margin and the 

 veinlets of the median and cubital series. A typical specialized scale 

 from the forewing was .128 mm. long and .030 mm. wide at widest 

 portion. 



\vl Psyclic confcd eraia the wings are sparsely ' scaled with special- 

 ized scales (see fig. 10, Plate X), and on the limbal area of the fore- 

 wings a slight degree of arrangement into lines is to be noted- 

 The characteristic one-pointed scale is thick, with convex upper and 

 lower surfaces. A typical scale from the limbal area of the forewing 

 was .040 mm. wide at widest ])ortion, and .128 mm. long, the striae 

 being .0018 mm. apart. 



Pseudopsxclic is much like Psyche as regards wing-covering, but the 

 characteristic specialized scale bears two short acute teeth or points 

 (see figs. 8 and 9, Plate X), and the scales are slightly more numerous, 

 this giving the wings a darker shade than those of Psyche have. The 

 same degree of arrangement as on Psyche is apparent near the outer 

 margin of the forewings. A typical scale was. 096 mm. long, .016 

 mm. wide, and the stride were .0023 apart. 



In Oiketicns ahbottii the characteristic specialized scale is obovate 

 with rather obtusely pointed, rounded single point at apex (see fig. 

 II, Plate X). Among some scales taken from the base of the wing 

 were a few two- to three-pointed ones, the points being short and 

 usually rather blunt v,sometimes acute). All the scales are strongly 

 pigmented and thick, with convex surfaces. A ty})ical scale was 

 .2 mm. long and .064 mm. wide. 



Family I'ossitla' (fig. 11, p. 65). This family includes but five North 

 American genera, comprising but few species. The scale-covering is 

 usually sparse; the scales are not well arranged in rows, and are con- 

 spicuously assurgent, i. e., no-, closely appressed to the wing-mem- 

 brane. 



In Priouoxystiis robiiiiic the male has very small hindwings. The 

 basal area of the hindwing is covered with blackish scale-hairs; the 

 anal area with yellowish scale-hairs and flat scales; the limb of the 

 wing is ) ellowish covered with specialized assurgent scales; the 

 costal area is covered with blackish specialized scales. The forewings 

 are pretty evenly covered with flat, broad, s])ecialized scales, which 

 &re especially assurgent on the basal area. The line of specialization 



