250 J. B. SMITH. 



less at the nervules encroached on by the purple; fringe light and dark oliva- 

 ceous; secondaries dirty white; a faint discal mark; marginal third of wing 

 broadly shaded with brownish; fringe white, with brown at veins; under sur- 

 face: primaries shining white; fuscous discal spot; a pale crimson shade near 

 apex; abroad fuscous subinarginal band; fringe fuscous and white ; secondaries 

 silky white; a very faint discal mark ; a slight pale crimson tint at apex; fringe 

 white, with fuscous at nervules, which latter color does not extend to the termina- 

 tions thereof. By far the largest and, with the exception of JRegia, the most beau- 

 tiful of that group of which Rivulosa is the type. 

 Habitat. — Texas. 



Aspila subflexa, Guen., Noct. 2, 175 (Aspila). — The primaries are a little 

 more produced at apex than rhexia. Color very pale greenish yellow, with three 

 olive green bands ; the third inflected at middle, and broken into a series of spots ; 

 fringe olive green ; secondaries blanc nacre, absolutely without spot or band. 



RHODODIPSA, Grt. 

 Buf. Bui. Geol. Surv. 3, 797. 



Mr. Grote in some remarks on the species volupia of Fitch gives the 

 only definition of the genus which I have been able to find. He says, 

 after remarking that in Rhodophora the anterior tibia besides being 

 armed at tip has also spinules : " In Rhododip.sa the joint wants the 

 spinules ; there is an outer claw and two spines on the inside, followed 

 by a third paler-colored and more slender, but nearly as long, much 

 longer than the ordinary spinules. At the location of this third spine 

 in Rhodophora is a spinule not noticably longer than the rest, and not 

 as long as one which follows the outer claw, and commences a series which 

 is wanting in Rhododipsa volupia." 



This is all of generic characters given and it certainly does not sustain 

 the genus. 



Rhododipsa volupia, Grt., Bui. U. S. Geol. Surv. 3, 797; Bkln. Bui. 

 3,47. — Head and thorax dark yellow; fore and hind wings bright crimson; 

 primaries with the median lines propinquitous, irregularly toothed, yellowish 

 white, not very distinct; a yellowish white discal spot; the subterminal line of 

 the same color runs very near the external margin, twice bent; the very narrow 

 terminal space again crimson before the pale, yellowish fringes which are faintly 

 interlined and similar on both wings; beneath the wings are crimson, with the 

 secondaries shaded with pale, as also the costal edge of primaries; legs and under 

 surface of thorax yellow ; abdomen red beneath. Expanse 26 millim. 

 Habitat. — Texas and Colorado. 



After the above was written I saw the type of Fitch's volupia, and it 

 is undoubtedly the same as the above species of Mr. Grote. The genus 

 Rhododipsa as based on this species has no sufficient foundation ; the 

 species is entirely congeneric with florida and gaurae, and was by Dr. 

 Fitch correctly referred to A/aria. Mr. Grote's course in describing a 

 species which he must have known by the description to have very closely 



