186 Journal New York Entomological Society. [Voi iv. 
ate in the later stages, their piercing caps being partly replaced by setse. 
Those on the red anterior edge are shortened and darkened by black 
pigment. The arrangement of the horns is normal for the spined Eu- 
cleids, a single segmentary subdorsal row on joints 3 to 13 and single 
lateral row on joints 3, 4, 6 to 12. In stage I the horns are surmounted 
by a central swollen-tipped seta and a small series arranged around it in 
a radiating circle. Skin covered by a series of curious wavy folds which 
extend on the horns also, but Jess distinctly. This structure is unique 
and its origin obscure, though it seems to be produced by the ordinary 
skin granules becoming concave and their raised edges confluent. 
Depressed spaces represented by whitish rings with dark centers, 
fairly well developed; (1) and (2) are situated closely in line in the 
small dorsal space, both paired; (4) and (6) are situated on the pos¬ 
terior half of the segment in the lateral space in two small areas devoid 
of green pigment, which are connected narrowly along the incisure; (5) 
is small and round, situated below (6) just above the base of the lateral 
horn toward the front edge of the segment. Subventral space without 
distinct marking. The spiracle on joint 5 is situated above the line of 
the lateral horns, nearly uniform with the white spots (5); those on 
joints 6 to 12 are below the horns, well hidden in the retracted sub- 
ventral space. No caltropes or detachable spines are present. This 
highly specialized larva departs widely from its congeners in many re¬ 
spects. Its form is unique and its skin structure much more specialized 
than any of the other spined Eucleids. The horns are nearly equally 
developed, and in this respect the larva is more generalized than its 
allies, as also the presence of more than three setae on the horns in stage 
I, indicating less advance in the degeneration of this stage. The 
peculiar lateral direction of the horns is somewhat paraded in Phobetron , 
though this does not indicate any close relation between these insects, 
since the hairs are in one case primitive setae and in the other degener¬ 
ating spines. The coloration is protective, and together with the peculiar 
shape enables the larva to escape observation to a sufficient extent. 
Affinities, Haeits, Etc. 
With the possible exception of S. nasoni , the larva of which is un¬ 
known, the present species has no near allies in our fauna. Belonging 
as it does to the spined Eucleids, its origin may be traced to the South. 
Not improbably this type of larva will be found to occur in the tropics 
of America, but at present I know of none. 
S. textula is single brooded. The moths emerge rather late in the 
