544 MR. H. W. BATES ON THE HELICONIDE LEPIDOPTERA 



12. Itiiomia Antisao. 



IthoMui Sao, Hewitson, Exot. Butt. Ithomia, f. 110, 111. 



This form requires to l)o distinguished by fi separate name from I. Sao of niibner, 

 although it he only a loeal variety of it, on account of its Avings Ijcing less clear, the 

 nervures tinged and bordei'cd with reddish, and the hind-wing border having a reddish 

 stripe wit) 1 in it. The true Sno of llul)ner, of which I examined the typical example in 

 Dr. JJoisduval's collection, has very clear wings, sharply defined nervures, and the hind- 

 wing border wholly dark ])rown. I did not find this in the Amazon region, the 

 whole of the cxam})lcs collected agreeing with the figs. 110, 111 of Hewitson. On the 

 Up})er Amazons it is an extremely abundant species. 



"With this species comnKnices the tendency to detcirmination of the hind-wing neuration 

 towards the costa. In the d the upper radial is placed as a branch of the subcostal near 

 the apex, and consequently there is no upper disco-cellular nervule. In the 9 the upper 

 radial is connected with the cell I)y means of an upper disco-cellular, in the same way as 

 in the typical Ithomia I. Flora and its allies. 



13. Ithomia Tucuxa, n. sp. 



6 ?. Expanse 1" 9"'-2" 1'". Closely resembles in shape, markings, and neuration 

 Il.homia Zei'llna (Hewitson, Exot. Butt. Ithomia, f. 94-9G). Differs in colours. Foiv 

 lo'nnf hyaline : attorn, the entire margin evenly bordered with dark brown, which colour 

 also forms a short oblique belt running from the costa across the end of the cell; the 

 hyaline part brownish, with a large spot in the middle of the cell, a crossbelt beyond the 

 cell, and a- row of elongate s])ots between the nervures, near the margin, light yellow; the 

 costal stigma, with the nervurc.'s crossijig it, and the bas(^ of the upper radial light 

 yellow. licnaath, tlie same, excejjt that the outer margin, from the costal stigma to 

 the liind angle, is orange-coloured, edged with black, and that there are two white spots 

 at the ap(!x. 



Wild lo'nig : attorc, more ])roa(lly margined with dark l)rown, except on the abdominal 

 edge; tile whole I)asal part of the disk, extending to the al)dominal margin, with the 

 nervures traversing it, light yellow ; an elongate spot over the lower radial, also, same 

 colour. licncalh, the same, except that the margin is orange, edged witli black, and that 

 tlicre is a marginal row of five white spots set in jjlack semicircles. 



JJody I)lack ; thorax spotted with white; ahdomen yeUow beneatli. Antenna^ black; 

 ehib oi'ange-yellow. 



A])un(lant in liiiniid pai'ts of tlie forest, at St. i'aulo, Upper Amazons. The hind-wing 

 u])per radial is totally wantin;;' in the rf. 



It. Iriio.MiA Salai'ia, Hewitson. 



ItlKiinlii Sa/ii/iia, Ilcwits. Exot. Butt. Itlioiii'ia, {'. If). 



The collar and wing-lappets are rufous, and the anteiuial club yellow; otherwise it 

 very closely resembles /. Primnla. 

 15anks of the Napo. 



