1871.] 101 
dé. Head and thoracic segments above clear reddish-testaceous ; eyes black ; ocelli 
shining, the median one surmounted by a short, black, setiform spine, directed 
forwards; antennszs short, the two 
basal joints stout, the thread very 
fine, furnished with short hairs in 
the apical portion; rostrum with a 
blackish line on each side; and there 
is also a faint, fuscous, geminate line 
on each side of the head, behind the 
eyes; palpi clothed with shortblackish 
hairs. On the anterior margin of the 
pronotum are three small blackish 
tubercles on each side, and on the 
posterior margin one on each side; 
legs reddish-testaceous, the cox pa- 
ler, yellowish, a short blackish line 
on each trochanter internally ; femora 
and tibies furnished with sparse, short, 
black sete, apex of tibize blackish ; 
tarsi thickly set beneath with black 
setz, infuscate, second joint of the 
thickened posterior tarsi blackish in 
its basal two-thirds, third joint with 
a broad sub-median blackish ring; 
Bittacus apterus, M’L. 
abdomen reddish-grey, paler beneath the lateral membrane between the dorsal 
and ventral surfaces, grey ; the first and second (second and third ?) segments 
sub-cylindrical, the second slightly the longer, third to sixth stouter, clothed 
with very fine and short grey pubescence visible under a strong lens ; on each 
side of the abdomen are short, geminate, very indistinct, blackish lines ; ter- 
minal segment furnished with a pair of very large, foliaceous, yellow appen- 
dices, directed upwards nearly at right angles with the dorsum of the ab- 
domen; in form each appendice is irregularly oblong, concave internally, 
superior margin strongly excised, the inferior slightly sinuate, the apical mar- 
gin sharply truncate, the superior angle being obtusely produced; the last 
ventral segment, beneath the appendices, supports the base of the penis, which 
is strong, upwardly-curved, with the apical portion gradually attenuated to a 
point, and directed back again, so as almost to touch the base. On each flank 
of this segment is a very minute palpiform appendice, situated close to the 
angle formed near its articulation with the small upper plate to which the 
large foliaceous appendices are attached. 
2. The colours much as in the g; the pronotum would seem to have two tuber- 
cles on each side of the posterior margin, instead of one. The posterior tarsi 
are not in part blackish. The abdomen is laterally broader, decreasing towards 
base and apex; the apex is furnished with two short, straight, spiniform, hairy 
appendices, between which is a broad, short lobe, deeply excised at the apex, 
and below this lobe is a short, obtuse organ, which is probably the ovipositor. 
1 
