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



12. Ithomia Antisao. 



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



This form requires to be distinguished by a separate name from J. iSao of Hiibner, 

 although it be only a local variety of it, on account of its wings being less clear, the 

 nervures tinged and bordered with reddish, and the hind-wing border having a reddish 

 stripe within it. The true Sao of Hlibner, of which I examined the typical example in 

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

 wing border wholly dark brown. I did not find this in the Amazon region, the 

 whole of the examples collected agreeing with the figs. 110, 111 of Hewitson. On the 

 Upper Amazons it is an extremely abundant species. 



With this species commences the tendency to determination 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 ? the upper 

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

 in the typical Ithomia I. Flora and its aUies, 



13. Ithomia Tucuna, n. sp. 



d $ . Expanse 1" 9"'-2" 4'". Closely resembles in shape, markings, and neuration 

 Ithomia Zerlina (Hewitson, Exot. Butt. Ithomia, f. 94-96). Differs in colours. Fore 

 wing hyaKne : above, 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 spots between the nervures, near the margin, light yeUow ; the 

 costal stigma, with the nervures crossing it, and the base of the upper radial Kght 

 yeUow. Beneath, the same, except that the outer margin, from the costal stigma to 

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

 at the apex. 



Sincl wing : ahove, more broadly margined with dark brown, except on the abdominal 

 edge ; the whole basal part of the disk, extending to the abdominal margin, with the 

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

 colour. Beneath, the same, except that the margin is orange, edged with black, and that 

 there is a marginal row of five white spots set in black semicircles. 



Body black ; thorax spotted with white ; abdomen yellow beneath. Antennae black ; 

 clul) orange-yellow. 



Abundant in humid parts of the forest, at St. Paulo, Upper Amazons. The hind-wing 

 upper radial is totally wanting in the c? . 



14. Ithomia Salapia, Hewitson. 



Ithomia Salapia, Hewits. Exot. Butt. Ithomia, f. 15. 



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

 very closely resembles J. Primula. 

 Banks of the Napo. 



