68 
regretted the loss of these hooks, and being unable to get them back 
again, has developed false hooks that are part of the solid uncus, not 
the jointed organs that occur in the other tribes. 
The restricted Lycienas, of which Avion is our representative, are 
characterised by a special form of clasp that is little deviated from 
throughout the tribe, although a very similar form occurs in some 
other Blues. 
Lampides baeticus is not very closely related to any other species, 
and may be the only representative of its tribe. My researches are not 
wide enough to say whether this is or is not so. The photographs 
show that the male appendages are very distinct from those of the 
other tribes. 
In the Plebeids the dorsal armature is in some degree characteristic, 
but the most marked structure dividing the Plebeids from the other 
Blues is the clasp, which is decidedly longer than broad, of somewhat 
spindle-shaped outline, dividing terminally into two nearly equal 
processes, one soft and rounded (valve) and one hard and serrated (harp). 
A much longer description would be necessary to be satisfactory, but 
what I have said is sufficient after a glance at the clasp of any of our 
British species. (Plate I.) 
When we turn to the female appendages, I have to report that I 
have not examined a sufficiency of species to feel at all sure that I can 
give characters for each group. I must, for the moment, regard the 
7th abdominal segment as the last one fully developed ventrally ; what 
is beyond this is no doubt the 8th abdominal segment, and as the 
whole of these parts seem involved in the structures for receiving the £ 
intromitent organ, then the 8th abdominal segment is the only one 
represented. 
This 8th segment consists, however, of two portions, a basal and a 
terminal one. These structures, ventrally, are opposite to the doisal 
plate of the 9th segment. I shall later give some reasons for believing 
that the 8th segment is not represented dorsally, One of these 
reasons I may mention here; the dorsal plate of the 9th segment 
carries the “inner rods,” and if this was not the 9th, but the 8th, 
it would be more or less continuous as a ring with ventral representa¬ 
tives of the eighth segment; this, however, is not so, the two lower 
margins of the 9th segment (dorsal) are connected together by mere 
membrane, quite separated from the 8th segment, which takes an 
attachment only to the distal margin of the 7th. In all the tribes the 
9th and 10th segments are very much alike, the 10th consisting of two 
(dorso-lateral) plates capable of being advanced by means of well- 
developed rods and well fringed with hairs. These are the tactile 
extremity of the ovipositor. 
The portions that differ in the several tribes and from species to 
species, are the portions of the 8th abdominal segment. 
In Everidi ( avyiades , pi. II., fig. 1) the basal portion is a project¬ 
ing plate, curved round so as to form a cone, abbreviated and open at 
the top, within the opening. The second portion is a chitinous plate, 
apparently somewhat movable. These two pieces we may call the 
hypostema (hypostema, prop), and the heiva (the rein). 
In Lyc^enidi (avion) the prop has the appearance of a narrow 
xxii.-xxiii. 
