OF THE AMAZON VALLEY. 523 



2. Callithomia Zeuxippe, n. sj). 



2. Expanse 2" 6'". Very similar to the l)nY■e(lin^^ It dilTcrs in liavinc^ the fore 

 wing, the base of the eosta, and tlic posterior margin l)roadly blaekish : the apieal 

 part of the wing is l)rown, the margins of the nervures, at tlie end of tlie cell, being 

 ri'ddish ; the row of pale sjjots across this part is reduced in number to three. Brneath, 

 the marginal row of pah> spots in botii wings is clear yellow, instead of silvery white as 

 in C. Alexirvhoe. The neuration of t he hind wing is slightly different from that of Alcxir- 

 rhoi', inasmuch as the upj)er radial is brought much nearer the sul)costal, and the upper 

 disco-cellular is very minute. 



One example taken on the banks of the Cui)ari, an alUuent of tlu' Tapajos. 



3. C^u^lituomia TiioKXAx, n. sp. 



2. Expanse 2" 10'". Win^s elongate, orange-tawny. Fore iciiKj : «/vo/7', with a large, 

 rounded spot in the middU' of tlie cell, the base of the costa, and the whole of the hind 

 margin black; the a])ical third is also bkickish, leaving a submarginal row of six 

 triangular spots and the edges of the nervures at the end of the cell orange-tawny ; 

 there is also a subaijical row of four elongate, semihyaline s])ots. Beneath, the same, 

 except that the submarginal row of fulvous spots is expanded into an irregular belt, and 

 that tliere is an inten'U|)t('(l row of minute yellowish spots on the extreme outi-r margin. 



IVnid viurj: altore, with a row of four subquadrale spots along tin; wing, close Ix'hind 

 the cell ; the margins are spotless. Beneath, the same, except that there is a broad sub- 

 costal black stripe, and a iifth spot added to the central series; the l)lack stripe curves 

 at the end. so as to meet the line of spots ; the hind margin, towards the anal angle, has 

 a row of four whitisji spots. 



Hody and antenna^ the same as in the two pi-eceding species. The neuration of the 

 hind wing is dilferent from that of the preceding, inasmuch as the U])per radial appears 

 as a branch ol'tlie subcostal after the cell. 



A single exani|)le taken at Tabatinga, on the frontier of Peru. 



(Jenus Cekatixta (Uiibn.), Doubleday. 

 Doiibld. and Ilewils. Gen. l)iin-n. Lc])i(l. p. Vll- 



This genus, which Doubleday thought most convenient to treat as a section of Ithomia, 

 forms part of a grou]) of genera or subgenera (comprising CeratiiiUt, Nupeoyenen, Oterio, 

 Mechanitis, Sals, Ithomia, 11// in e nil in) which agree in their ])al|)i being destitute of 

 hairs in front, in tlieir terminal joint being short, very slender, pointed, and pi'ojeeting 

 from tlie foi'ehead, and in the antenna! Ixung somewhat elongate, only sligiitly and very 

 i^Tadually thickeiuMl towai'ds their ti])s. These genera or subgeiu'ra, however (n\ least, 

 such of them as I think it will be; advantageous, for the sake of clearness, to adopt), difler 

 from each other greatly in tiie neui'ation of the hind wings. 



Ceratinia has the hind wing elongated in both sexes. In the male, the lower disco- 

 cellular forms a very obtuse angle with tiie median, is aniiulated, ami emits a recurrent 

 nervule near or close to the junction of the lower radial, the middle diseo-eellular lieiui;- 



