344 Dr. T. A. Chapman’s notes on Micro-Lepidoptera 
but no definite appendage. The last joint is again rather 
shorter, and terminates in a sharp point. 
The head is rather longer than broad, and narrows a 
little forwards ; there are two strong mandibles, with four 
brown teeth. The antennz are very long, about equal in 
length to the transverse diameter of the head; there are 
two short thick basal segments, as to the first of which I 
am not very sure whether it is a true segment or a basal 
projection; there are two long segments about equal in 
length, and a nearly as long terminal joint, which is little 
more than a seta in thickness. ‘T'wo pairs of palpi are 
also visible—two and three-jointed, apparently those 
usual in lepidopterous larvee, but I have not defined their 
relations. There is also a central point (spinneret ?). 
I have also one observation bearing on the pupa. A 
moth that I placed on a slide was found to have a defec- 
tive antenna, and was accompanied by the head-piece of 
the pupa case, which was of the “ Incomplete” or 
“Micro” type, that is, consisted of the covering of 
antennee, head, and head-appendages in one piece. This 
observation renders tolerably certain what was antece- 
dently probable, that the pupa is of “micro” type, with 
3rd and following abdominal segments free. 
The pupal structure of Zygena and of Limacodes 
showed them to be micros, of a rather early type, whilst 
their ova also presented peculiarities nowhere to be met 
with among macros, and though not at all resembling 
closely those of riocephala, not at all unlike some 
Adelids. 
The larve of these two groups, however, present very 
wide differences from other micros. 
The only other micro-larva having similar form, and 
the habit of not mining or feeding internally, or under a 
web, was curiously that of Hriocephala. Unfortunately, 
though the pupa of Zygzena and Limacodes are of nearly 
the same micro-type, and that a low one, and Hriocephala 
must also have a pupa of low micro-type, I have, after 
trying to obtain it for three years, failed to do so. It 
cannot be taken for granted that it is of the same type as 
they are. We are therefore deprived, for the present, of 
the light that would throw on these relationships. It 
occurred to me, however, that if this relationship was 
real, and not a mere resemblance, some other points 
