402 RHOPALOCERA. 
can be traced ; the lower discocellular is atrophied towards the upper end, and meets the 
median a little beyond the second branch; the costal side of the cell is a little shorter 
than the median side. The secondaries have a long basal nervure ; the upper discocellular 
is atrophied for the greater part of its length, it meets the subcostal at a large obtuse 
angle a little beyond the first branch ; the lower discocellular is atrophied towards its 
upper end, and meets the median beyond the second branch ; the costal side of the cell 
is shorter than the median side. 
The front legs of the male have the trochanter inserted beyond the middle of the 
coxa; the femur =4 coxa; tibia = coxa, dilated in the middle; tarsus =? tibia. 
The terminal tarsal joint of the female = three preceding joints, with a large setose 
pad on the under surface; the second, third, and fourth joints terminate with a strong 
spine. The palpi have a very short terminal joint = § middle joint, which tapers 
gradually towards its distal end, the basal joint is dilated = } middle joint. Antenne 
with forty-three joints, and terminating with a slender club. The harpagones terminate 
in two short stout setose lobes; above the penis is a single long depressed spine. The 
penis itself is slightly decurved, blunt at the extremity; a strap connects it with the 
base of the harpagones, running outwards and then curving abruptly back. 
1. Ithomeis imitatrix, (Tab. XLI. figg. 15,166,179.) 
Ithomeis imitatrix, Godm. & Salv. P. Z. 8. 1878, p. 362’. 
Ithomeis eulema, Butl. & Druce, P. Z. S. 1874, p. 353’. 
Alis nigris, anticis apice alba, maculis sex margini externo subparallelibus ochraceo-albidis, tribus ad costam 
proximis elongatis, maculis duabus inter ramos medianos et una in cellula ejusdem coloris, fascia infra- 
cellulari et posticis preter marginem externum saturate fulvis, posticarum margine externo albo punctato ; 
subtus sicut supra, costa posticarum saturate fulva; prothorace utrinque albo punctato, fronte alba, 
abdomine fulvo supra, medialiter fusco. 
© mari similis sed major, et maculis anticarum magis ochraceis. 
Hab. Costa Rica (Van Patten”), Cache, Irazu (Rogers!); Panama, Veraguas 
(Arcé *). 
This [thomeis is certainly very closely allied to I. eulema, Hew., differing in its 
primaries being blacker at the base, the fulvous streak being very small or altogether 
wanting. ‘The black border of the secondaries is wider towards the anal angle, instead 
of being nearly parallel throughout. 
It is no doubt a form of J. eulema; and perhaps, when a larger series is examined, 
not to be separated from that species. 
The homceochromatic associates of J. imitatriv are Eresia pecilina, Callithomia 
hezia, Euterpe dismorphina, &c. 
