352 Appendix. 
The thorax is large and shiny, deep purplish-brown, con¬ 
siderably wider than the head ; laterally are three forwardly 
projecting tubercles each bearing a spine jagged at each side and 
two long hairs; above these come two rows of spines and hairs, 
the uppermost row composed of a distinct spine arising from a 
tubercle and a thin hair, the median row of single spines. 
Abdomen deep purple, composed of nine distinct segments, 
the eighth segment is small, each segment with a transverse row 
of lateral plumose bristles; ventrally the abdomen is much paler 
in colour ; respiratory siphon situated on the dorsum of the small 
eighth segment, about as long as the two last segments combined, 
on its posterior side near the base are two tufts of plumed hairs, 
the apex ending in four leaf-like expansions, the two posterior 
ones being large, the anterior small; anal segment bright 
chestnut-brown abruptly truncated with a thick spiny black 
dorsal bristle on each side, a long apical dorsal tuft of bristles 
and a moderately large ventral fan; the edge of the segment 
with a fringe of short black bristles forming a lateral swelling on 
each side; gill-plates very small in the form of four rounded 
knobs. 
The Pupa. A dried empty skin only has been received, 
there are two broad anal plates and the respiratory siphons are 
long, narrow and cylindrical, the opening being slightly oblique. 
The specimen is too damaged to describe fully. 
Larvae have also been received from Queensland, sent by 
Dr. Bancroft, but were handed over to me too late to describe. 
They are evidently those of M. speciosus, and are of a similar 
colour to the one just described. 
The larva and pupa of Psorophora. 
Professor Howard figures the larva and pupa in his recent 
work on mosquitoes.'* The larva is of Gulex type, but the anal 
plates are longer and more pointed, and the hair fringe on the 
under side of the last segment of the body is much longer and 
denser ; the siphon is prominent and intermediate in size between 
Stegomyia and Gulex and bears a rather long hair on one side ; 
the head is not quite as wide as the thorax and has four feather 
bristles in front; the antennae have a few spines on one side and 
a single lateral hair near the apex when mature; in the young 
larva there is a small tuft of hairs on the side of the antennae 
and four bristles at the apex, three small and one long; the 
thorax is more or less globose when mature, broadened and 
quadrangular when young, slightly wider than the abdominal 
segments in the adult larva, considerably wider in the young 
* ‘ Mosquitoes.’ L. O. Howard, New York (1001). 
