OF THE AMAZON VALLEY. o25 



the two yellow spots across the middle of the fore wing are pale and semitransparent ; 

 the basal area of the hind wing is also semitransjDarent. 



This variety occurs in company with the typical C. Ninonia at Cameta, on the To- 

 cantins, in much greater abvmdance than its type. I met with it also on the banks of 

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

 pany with C. Leprieurii, a form which I did not meet with in the Amazon region. 

 Var. 2. Expanse 2"-5"' Much larger than var. 1. The yellow spots across the middle 



of the fore wing are entirely wanting, there being only a crooked yellow belt across 



the black apical part. Both wings are much broader than in var. 1 ; and the hind 



wing is strongly angulated about the middle of outer margin. 



This variety occurs much further to the west. It is found, to the exclusion of var. 1, 

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

 at all the stations I examined, from the mouth of the E-io Negro to Peru. With it are 

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

 occur intermediate between vars. 1 and 2. 



2. Ceratinia Thea, Hewitson. 



Ithomia Thea, Hewits, Exot. Butt. Ithomia, fig. 11. 



I consider this a well-marked and fixed local variety or race of C. Ninonia. It has 

 not been found hitherto elsewhere than on the banks of the Rio Negro, whose climate, 

 soil, and forests are different from those of the main Amazons. 



3. Ceratinia Xanthostola, n. sp. 



c? . Expanse 2" 5'". In colours resembling C. Thea ; the wings very different in shape. 

 The fore wing is long and narrow, very much longer than the hind wing (as in fig. 4, 

 Ithomia, pi. 2. Hewits. Exot. Butt.). Opake orange-tawny ; costal edge and a faint spot 

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

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

 large rounded yellow spots. 



Hind wing semioval, the costal and subcostal nervures rigid and straight, reaching 

 the apex, which forms a sharp angle : above, opake orange-tawny, with a broad, some- 

 what regular dusky margin, in which is a row of seven rounded yellow spots. Beneath, 

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

 along the costal nervures, and a central dusky stripe along the wing, passing close beliind 

 the cell. 



This insect has the appearance of an aberration or extraordinary variety of C. Ninonia, 

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

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



4. Ceratinia Vallonia, Hewitson. 



Ithomia Vallonia, Hewits. Exot. Butt. Ithomia, fig. 13. 



This beautiful species was very rare at Para. In colours it resembles much 

 Napeogenes Cyrianassa. 



