ey a 
oval linear, sometimes conical. It is generally set on the end of the 
second member, but in some cases in front, and in one species does not 
reach as high as the summit of the second member. 
MAXILLARY PALPI. 
These show a remarkable, and, if we except some Phycisidae, a unique 
characteristic. The maxillary palpi are present in all species we have 
examined, though in the synopsis hereafter given we speak of them as 
being zzvis7b/e in some species. They are in these entirely beyond ob- 
servation except under the most careful preparation of the head parts, 
and then only under a power of at least 20 to 30 diameters. But in all 
cases the characteristic is the same. The end member is not on the 
summit of the member next below, but is set upon it nearly at its base, 
_ sometimes seeming to be directly from the same stem. All systematists 
have noticed the bi-tufted maxillary palpi, but none seem to have noticed 
that it was accompanied with a remarkable modification of the organ 
itself, 
EYES. 
The eyes are surrounded with a fringing of short hairs. 
ANTENNZ. 
The antennz are in no respects strongly peculiar, except in the 
presence of the basal membraneous process. ‘They are doubly bitufted 
pubescent on the basal and middle segments, and simply pubescent to- 
wards the end. In one species each segment, basally and medianly, 
seems to be doubly tritufted. The tultings are on the posterior side, 
and are shorter in the female. In all cases the antennz are scaled in 
front. 
The process is subject to great variation in shape, as will be seen 
from the figures. 
THORAX and ABDOMEN. 
There is, so far as we have noticed, no peculiarity about the thorax 
or abdomen, except in one species; in that the abdomen is tufted 
laterally on the penultimate and antipenultimate members much after the 
manner of Samea, Guen. ‘The genitalia differ in some respects in the 
direction of the furcate basal part of the uncus, and in the lateral spines. 
WINGS. 
There are some remarkable peculiarities in the wings. In some of 
the species the wings are simple and correspond in both sexes. In 
others there are modifications of a sexual character which, taken as a 
whole, are extraordinary, and, so far as we are aware, unique. In the 
females the wings are simple, and follow the normal structure. In the 
males there is a costal fold of long scales ranged transversely beneath 
