MESOSEMIA. 379 
discocellular is not atrophied—it meets the subcostal a little beyond the origin of the first 
branch ; the lower discocellular is atrophied near its junction with the radial—it meets 
the median some way beyond the origin of the second branch ; the costal side of the cell 
is much shorter than the median side. 
In Vv. asa the discocellulars of the primaries are rather more atrophied and less 
curved, the middle discocellular leaving the subcostal at a larger acute angle. 
In WU. mollina there is a very short upper discocellular running almost in a line with 
the radial, the middle and lower discocellulars are still more atrophied, and the upper 
stands almost at a right angle to the upper radial. 
The front legs in the male of M. grandis have the extension of the coxa beyond the 
trochanter joint long and slender; the tibia is short and dilated towards its distal end ; 
the tibia is > femur + trochanter; the tarsus is > tibia; there is a constriction near 
the end, the rudiment of a joint, and two short spines at the ends. 
In M. asa the fore legs of the male are similar to those of M. grandis; but those 
of M. mollina differ widely, being similar to those of Perophthalma tenera, except that 
the tarsus is even more reduced in length, being hardly larger than the trochanter. 
The fore leg of the female in WV. asa has the terminal joint of the tarsus=the three 
preceding ones; the under surface has a densely setose pad; the first, second, third, and 
fourth tarsal joints each terminate with a strong spine. 
The palpi in both Wf. asa and M. grandis have a small subspherical terminal joint, 
the middle joint being about six times as long, and gradually tapering towards the 
distal end; basal joint dilated = 4 middle joint. The antenne of M. grandis have 
thirty-seven joints, those of M. asa and M. mollina thirty-two. The eyes of all three 
species are slightly hairy. 
The male secondary sexual organs have the usual bilobed setose tegumen with two 
long lateral spines. The harpagones are subtriangular, the angle directed outwards 
being setose ; the lower edge is curved outwards slightly in the middle, the projecting 
piece being setose. The penis has a curved strap from the middle to the base of the 
harpagones. 
In WU. asa the projecting piece on the under surface of the harpagones is produced 
into a spine ; in WV. mollina the upper point of the harpagones becomes a lobe ; the lower 
projection is still more produced than in M. asa. 
a. Discal area of secondaries blue crossed by dark bands. 
1. Mesosemia telegone. (Tab. XX XVIII. figg. 3g, 42.) 
Diophtalma telegone, Boisd. Sp. Gén. t. 21. f. 2°. 
Mesosemia telegone, Hew. Ex. Butt., Mesosemia, t. 1. f. 9, 10’; Bates, Journ. Linn. Soc. Zool. ix. 
p. 416°; Butl. & Druce, P. Z. S. 1874, p.352*; Godm. & Salv. Trans. Ent. Soc. 1880, p. 124°. 
Mesosemia lamachus, Hew. Ex. Butt., Mesosemia, t. 1. f. 3-6°. 
Mesosemia amiana, Feld. Wien. ent. Monatschr. v. p. 100" (?). 
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