Mr. T. B. Fletcher on the genus Deiderocoims. 125 
“ • Of this distinct genus, whose hitherto known representa¬ 
tives belong to the Oriental and Papuan Regions, Prof. Simony 
brought back from Sokotra three specimens (d $) of a new species, 
and of these the least good specimen was sacrificed to the design of 
making a microscopic preparation of the neuration. The specimens 
were obtained on January 11, 1890, in the mangrove-swamps in 
Western Sokotra by beating the flowers of Avicennia marina. 
“ Since hitherto there has only been published a short account of 
the system of neuration by Meyrick (T.E.S., 1886, 8), and that in 
many respects not concordant with the aforesaid preparations, nor 
has a figure of the insect or a sketch of its neuration been published 
before, both are here given for the first time. [Dr. Rebel has 
evidently overlooked Zeller’s figures in Bull. Soc. Mosc.—T. B. F.] 
“ The genus is easily distinguished by the thickset build of the 
abdomen and the short antennae, which in the are somewhat 
roughly scaled towards the tip. The face is closely scaled, the palpi 
are slender, their pointed terminal joint half as long as the curved 
middle-joint. The legs also are unusually short and stout, the tibiae 
with knot-like dilatations of scales, on the fore-tibia only at the 
apex, on the mid-tibia at i and apex, on the hind-tibia at J and also 
at the origin of both pairs of the very long spurs. The apices of the 
tarsal joints also are more moderately dilated with scales, only the 
terminal joints remaining bare. 
“ The lower fissure of the trifid forewing does not reach so far 
basewards as the upper one. The lengths of both clefts are in the 
proportions of 3:2. In the neuration of the forewing, the discal 
cell is not closed and veins 5 and 6 are so far wanting that they are 
reduced to a quite short termination running into the first cleft. 
Veins 8 and 9 are long-stalked. Vein 10 arises separate from these, 
vein 11 remote from 10. 
“In the hindwing the third segment is only half as long as the 
first, the cleft between the first and second segments is to the greatest 
length of the hindwing as 27 :43. In this wing also the cell is not 
closed, vein 2 also is wanting [the figure, however, clearly shows 
that 2 is present and that it is vein 3 which is absent.—T. B. F.], 
Amin 3 does not reach as far as the apex of the second segment, Avhose 
main support is formed by A'ein 4, 5 and 6 are much reduced, vein 7 
traverses the first segment to its apex, A’ein 8 is free. 
“ Mej’rick ( 1 . c.), Avho must liaAm described the neuration after only 
slight clarification, makes veins 2 and 4 of the foreAving arise from 
the angle of the cell (which scarcely agrees with the present species), 
vein 3 AV’anting, 5 and 6 A’ery short, vein 11 arising near 10. In the 
hindwing A’ein 3 is Avanting, according to his account. 
“ Unless another system of neuration be admitted for the example 
