20 JOHN B. SMITH. 



antenna- of the male are almost entirely simple, the ciliations being 

 even less marked than in the Atlantic Coast form. Examples of 

 this species are in the collections of the U. S. National Museum, 

 Rutgers College and E. L. Graef. 

 Hydrflecisi juvenilis Grote, pi. 1, fig. 8, % genitalia. 



1881.— Grote, Bull. Geol. Surv., vi, 2(37, Gortyna. 



1881. Grote, Trans. Kans. Acad. Sci., vii, 68, Gortyna. 



1893.— Smith, Bull. 44th CT. S. Nat. Mus., 174, Hydrazcia, 

 Ground color a rather pale yellow, with a more or less reddish tinge. Head 

 and thorax without .special maculation. All the wing markings well written 

 and brown. Basal line geminate, distinct to the submedian vein. T. a. line 

 geminate, as a whole almost upright, the inner part quite even to the submedian 

 vein, there inwardly toothed and outwardly curved ; the outer portion is more 

 irregular, and to it is attached the little claviform, which extends a short distance 

 into the median space. The t. p. line is single, unusually distant from the t. a. 

 line and very close to the outer margin. It is crenulated, and as a whole, almost 

 parallel frith the outer margin after the first outcurve over the cell. The median 

 shade line is unusually distinct, crosses a little beyond the middle of the wing 

 and forms almost a rectangle below the reniform. The s. t. line is brown, fairly 

 well defined, except toward the apex, which is the palest part of the wing. The 

 terminal space below the apex is darker than the balance of the wing in the 

 majority of the specimens. In some cases the entire median space becomes suf- 

 fused by a smoky shade. The ordinary spots are narrowly outlined and of the 

 ground color or a little paler, never white in the specimens that I have seen. 

 The orbicular is usually large, almost round or only a little oval. Reniform 

 moderate or small, kidney shaped or oval. The claviform is small and has been 

 already described. Secondaries smoky, with a purplish shade. The fringes with 

 a distinctly paler line at base. Beneath yellowish, with a bright purplish outer 

 line and sometimes an inner shade line on both wings. The secondaries have a 

 small black discal spot. Expanse 1.10-1.20 in. ; 28-30 mm. 



Hab. — Colorado, foot hills near Denver; Glenwood Springs, Sep- 

 tember 16th. 



Six examples, representing both sexes, are before me, and the 

 only difference observable is the tendency to a smoky suffusion in 

 the median space of some of the examples. The species is the 

 smallest in average size of those belonging to this series and the 

 wings are a little the most pointed The apex is distinctly acute, 

 while the outer margin is only slightly pointed and unusually 

 oblique. The male antennae are almost simple. The genitalia are 

 unique, the harpes long and narrowing toward the tip, except that 

 there is a broad, short process from the middle of the lower margin. 

 The tip is obliquely cut off and set with a few stiff spines. There is 

 rather a large pointed clasper arising within the middle, extending 

 well towards the tip, and at the point to which it reaches another 

 smaller, cylindrical and slightly curved clasper is inserted into the 

 harpe. The species does not seem to be common. 



