414 RHOPALOCERA. 
MESENOPSIS, gen. nov. 
We find, on dissection, that the so-called Limnas bryaxis of Hewitson cannot be 
retained in that genus. Not only are there slight differences in the neuration, but the 
structure of the male secondary organs differs so widely that it seems necessary to 
place it elsewhere. The latter characters suggest a relationship with JMJesene and 
Cricosoma, and we accordingly place it near those genera. 
We recognize three, perhaps four, species as belonging to this genus, two of which 
belong to our region; a third is from Western Colombia*; and a fourth, represented 
by a fragment which formed part of the late Mr. Belt’s Maranham collection, is from 
Northern Brazil. This latter specimen may prove to belong to our MW. melanochlorus. 
The subcostal branch of the primaries of MM. bryaxis emits two branches before the 
end of the cell and one after it; the discocellulars are atrophied, the middle one and 
the upper radial meet the subcostal at the same point, the lower one the median a little 
beyond the second branch; the costal side of the cell is a little longer than the median 
side. ‘The secondaries have a strong basal nervure; the atrophied upper discocellular 
meets the subcostal opposite the first branch, the lower the median beyond the second 
branch; the costal side of the cell is a little longer than the median side. The 
trochanter of the front legs of the male is inserted in the coxa a little beyond the 
middle; the femur <4 coxa, dilated towards its distal end, tibia=about # coxa, tarsus 
(single-jointed) =2 tibia. The terminal tarsal joint in the legs of the female is about 
= second and has a setose pad beneath ; the first, second, and third joints terminate 
beneath with two strong spines; the fourth has three, and there are other spines on 
the third and fourth beneath. The terminal joint of the palpi is short=+ middle 
joint, which is somewhat dilated in the middle ; the basal joint is long turgid >$ 
middle joint. 
The secondary male sexual organs have a normal tegumen; the harpagones are 
simple, terminating above in an acute angle; beneath is a strong spine in the middle 
line, connected below with the base of the harpagones. The penis is short and 
truncate, and inside the orifice at its extremity are numerous patches of dentate 
papille, which are probably attached to filaments and capable of extrusion, as in 
Cricosoma. 
1. Mesenopsis bryaxis. 
Limnas (?) bryaxis, Hew. Ent. Monthl. Mag. vi. p. 227'; Ex. Butt., Limnas, 3. f. 20, 21”. 
* Mesenopsis briseis, sp. n. 
M. bryaxt similis, sed minor, fasciis alarum flavis haud margines exteriores attingentibus, marginibus his late 
nigris distinguenda, 
Hab. Cotomsia, San Pablo, R. San Juan (T'rétsch). 
We are indebted to Dr. Staudinger for a pair of this species. 
