OF THE AMAZON" VALLKY. 52.") 



tlie two yellow si)()ts across the middle of the fore wiiit^- are i)ale and seiuitranspareiit ; 

 the basal area of the hind wing is als(j semitranspareut. 



This vai'icty occurs in company with the typical C. Xinouin at Cam<'t:'i, on the To- 

 cantins, in much greater abundance than its tj'jie. I met with it also on the l)aiik'- of 

 the Tapajos, but there without the true C. Niiiouia. It is found also at Cayenne, in eoni- 

 panv with C. Leprieurii, a form which 1 did not meet with in the Amazon region. 

 \'ar. 2. Expanse 2"-5"' Much larger than var. 1. 'I'he yellow s])ots across tlie middle 



of the foi'e wing are entirely wanting, there heiiit;' oidy a crooked yellow l)elt across 



the black apical part. l?oth wings are much Ijroader than in var. 1 ; and the hind 



wing is strongly angulated about the mid(Ue of outer margin. 



This variety occurs much furtlun- to the west. It is fouiul, to the exclusion of \ar. 1. 

 at Obydos, on the Guiana side of the Lower Amazons, and, again, on the Upper Amazons, 

 at all tlie stations I examined, from the nunitli of the Rio Negro to Peru. AVith it arc 

 found many individuals agreeing in colours with var. 1, although not in shape ; others 

 occur intermediate l)etween vars. 1 and 2. 



2. CiciiATixiv TiiEA, llcwitson. 



Ithomia Tliea, Ilewits, E.xot. Butt. Ithomia, fig. 11. 



I consider tliis a well-marked aiul fixed local variety or race of C. Xiiionin. It has 

 not l)ecn fouiul hitherto clsewlu're than on the banks of the llio Negro, wliose climate, 

 soil, and forests are ditlerent from those of tiie nuiin Amazons. 



3. Ckkatixlv Xantiiostola, n. sp. 



c? . Expanse 2" 5'". In colours resembling C. Tliea ; the wings very dill'crent in slia|)c. 

 The fore wing is long and narrow, very much longt-r than tlie hind wing (as in iig. I, 

 Ithomia, pi. 2. Hewits. Exot. Ikitt.). Opake orange-tawny; costal edge and a faint s[)ot 

 in the centre of the cell blackish; apical third (or more) black, crossed l)y a curved 

 yellow belt, which reaches only the second median bramdi ; margin with a row of seven 

 large rounded yellow spots. 



Hind wing scmioval, the costal aiul subcostal nervures rigid and straight, reaching 

 the ai)ex, which forms a sharp angle : aboce, opakc; orange-tawny, with a l)road, some- 

 what regular dusky margin, in which is a row of seven rouiuled yidlow spots. Bcni'dlh. 

 the same, except that tlu; base of the costa is yellow, that there is a stripe of dusky colour 

 alongthe costal nervures, and a centi-al dusky strij)e along the wing, passing close liciiind 

 the c(dl. 



This insect has \\\c a|)i)earanc(> of an aberration or extraordinary variety of C. yinviiKi. 

 in company with whicii and its varieties it is found. Many individuals, however, 

 occurred; and 1 think it is a form whose peculiarities are probably hereditary. 



f. ClCllATIXIA Vam.oma, ileuitson. 



Ithomia Valtonia, Ilewits. Exot. Butt. Ithomia, fig. l.i. 



This beautiful species was very rare at I'ara. in colours it rcscmldcs nuuh 

 Nopcogcnes C'l/riunussa. 



