— 149— 



A decidedly variable species within certain limits, as to size, macul- 

 ation and color. Sometimes it will be of an almost even dull fuscous 

 brown, the costa but slightly paler, the maculation indefinite ; then it 

 will appear with bright distinct markings and even colors, and again 

 with the entire base and costal portion of wing discolorous bright lute- 

 ous, absorbing all the basal maculation. Between these there is every 

 shade of variation— in fact scarcely two specimens of the large series be- 

 fore me are even nearly alike. 



The type form as figured by Hiibner represents a specimen with the 

 costa moderately pale, and otherwise well marked : tracta Grt. , is based 

 on specimens in which the pale shading encroaches still more on the 

 center of the wing, and is simply a somewhat more marked specimen of 

 the type form, while arna Gn., is evidently based on well marked spe- 

 cimens in which the costa is concolorous. Consequently chalcedonia, 

 tracta and arna all refer to the same species — arna perhaps retainable as 

 a poor variety. 



The genitalia are as to harpes of the usual type. The clasper con- 

 sists of a broad corneous base from which is projected a rather large, 

 sickle-shaped hook. 



The insect is common in the southern states and finds its centres 

 of greatest abundance in Texas and Florida. 



Hadena (Oligia) versicolor Grote, Proc. Acad. Nat. Sci., Phil., 1874, p. 

 204 ; Can. Ent., 1875, v. 7, pi. i, f. 11. 



" Dark brown with a more or less decided ruddy tinge. Primaries shaded with 

 ochreous along internal margin, and with a well sized distinct deeper ochreous 

 apical patch. Ordinary lines obsolete, whitish, broken by black points on the veins ; 

 the t. p. line emanates from a distinct and large white spot on the costa above the 

 vague renilorm, which latter is preceded by a distinct black shade on the disk, an 

 evident feature of the ornamentation of the wing. Hind wings uniform pale fuscous, 

 silky ; beneath as above with a discal dot and distinct darker median shade line. 

 Fore wings beneath blackish with traces of the continuation of the median line, paler 

 terminally. Head and collar brownish ; tegula; paler ; thoracic crestings tipped 

 with blackish." Expanse, 20 mm. 



Habitat — St. Catherine's, Ontario ; N. Y. June. 



This species I have identified in at least two collections but cannot 

 recollect where. It struck me as a very distinct form, readily recogniz- 

 able from the description and figure. It is perhaps nearest to some 

 forms of arna, but has a habitus quite different. 



O. exesa Gn., Noct. i, 222, (1852), Celana; Wlk., Cat. B. Mus., Het. X, 262, 

 (1856) Celccna; Grote in Lists, Hadena i^ Oligia; Bull. U. S. Geol. and Geog. 

 Surv., VI, 265. 



Head, thorax and primaries, a rich, somewhat yellowish brown, with the macula- 

 tion distinct. Collar with a darker brown transverse central line. Basal space in^ 

 feriorly blackish. T. a. line geminate, dark brown, with a central white line. The 



