480 
Dr. T. A. Chapman m Zizeeo'ia, 
arises. Zizera has been used for tlie harsandra group 
over and over again, but, I think, never for alsus, till we 
come to Butler’s list (1900). Short as twenty years may 
be, it is perhaps sufficiently long, in this unusual case, to 
add weight to the view that harsandra is the type, on the 
recently strongly advanced contention that use and wont 
shall be duly considered in this question. 
If all this, however, is mere prejudiced special pleading, 
and this view is finally held to be erroneous and that 
harsandra (with its allies) has to be provided with a new 
genus, I would suggest that the new name be Zizeeria, as 
making the change least troublesome. 
Possibly my best course is to replace Zizera by Zizeeria 
(for harsandra), it will make matters clearer, and only 
add another synonym if my alternative contention holds 
good. To do this is, of course, rather to sit on the fence. 
If Zizera adheres to als^is {minimus) I fancy it becomes a 
synonym, but that is a matter that does not now con¬ 
cern me. For details of C. minimus 1 may refer to Tutt’s 
“ British Lepidoptera,” vol. x (Butts., vol. iii). 
My interest in the Zizeerias originated in the resem¬ 
blance of one or two species in some of their forms to 
Lyeaeno'psis, and in the question whether the genus is a 
genus of Lycaenopsids. I am now quite satisfied that 
Zizeeria and Lyeaeno'psis belong to quite separate groups. 
I have no very clear ideas as to the limits and contents of 
the group to which Zizeeria belongs, nor as to what its 
name ought to be. As it has not yet got one, we may for 
convenience call this section of it the Zizecriidi; we may 
define the whole group as containing those species with 
the dorsal armature in two moderately separated portions, 
i. e. with a narrow and (comparatively) structureless medio- 
dorsal portion, and each lateral portion carrying a more or 
less long curved hook articulated to it. In Zizeeria this 
hook is remarkably long and slender. In the structure 
of the girdle or ring there are one or two interesting 
points. One of these is the central dorsal portion 
which I have described as narrow; this consists of two 
portions, the anterior and posterior; in most of the species 
these are fairly close together, and look like what, no 
doubt, they are, the anterior and posterior margins of 
the dorsal bridge more fully chitinised, as margins often 
are; but in ossa, less in malia, but very markedly in 
lysimon, these two portions are separate. So that in 
