156 ZYC^NIDiE AND BOMBYCID.B 



4.-CISTHENS UNIFASCIA. UPi. 7. fig. n.) 



Cislhene wiifascia, tj. & R. Trans. Am. Ent. Soc. vol. 2, p. 187. 

 PL 2, fig. 63 5. (1868-9.) 



5 . ? . — Head, prothorax and tegulce, above, pale ochre yellow. 

 Beneath, the legs are pale yellow ; anterior and middle tibiae mascu- 

 late with lead color. 



Primaries rather narrow-er than in C. subjecta, apices appearing 

 more rounded, hind margin more oblique ; lead gray, with a median 

 pale ochre yellow band running from the costa to the internal margin, 

 and continued along the latter to the base of the wing. This band 

 varies in width, appears to be narrower in the 3 , and is constricted on 

 the disc. It seems to be the result of the fusion of the spots on the 

 costal and internal margins at this place in C. subjecta. Beneath, as 

 above, the band showing a warmer tinge. Hind wings and abdomen 

 rose color, former touched at apices with a leaden hue. (Grote, 

 (loc. cit. ) 



Expanse 0/ wings, 0.70 inch. Length of body, 0.25 inch. 



Habitat. — Florida (Grote and Robinson). Texas (Belfrage). 



Grote and Robinson say in relation to this species : "Notwithstand- 

 ing the variability of our Northern C. subjecta, the present may be a 

 distinct species. It merits a name in any event from the constancy of 

 its ornamentation." The specimens from which the present figure was 

 drawn were received from Mr. George Belfrage, of Texas, and vary 

 from the above description only in the absence of any leaden hue on 

 the tips of the secondaries. G. and R. in their Cat. Lep. N. Am. 

 1868, place the present species as a variety of C. subjecta, but from my 

 knowledge of the two allied Californian species, I prefer for the 

 present to consider C. U7ti/ascia as specifically distinct, more especially 

 as the differences between C. nexa and C. faustinula, which we know 

 to be distinct species, are much the same as those which separate 

 subjecta and imifascia. 



Since the above was written I have received a number of insects from 

 Mr. Belfrage, and among them is a specimen of this species in which 

 the transverse band is almost obliterated, though this and all the other 

 specimens received show no leaden hue at the tip of the secondaries. 

 Out of six specimens received irom Mr. Belfrage this is the only one 

 which shows any tendency to variation in the markings of the prima- 

 ries, yet having noted this variation, it is quite possible that Messrs. 

 Grote and Robinson are right in placing C. unifascia as a variety of 



