Mosquitoes of New Guinea — PENN 
23 
Specimens examined. — The pupal exuviae 
of one male and two females from Hilimoi, 
Milne Bay, Papua. 
Bironella (Bironella) gracilis Theobald 
1905 
The pupa of this species has not been de- 
scribed, but rather unsatisfactory figures of 
the paddles and trumpet were published by 
Hill (1925: 66). 
Genus MEGARHINUS Robineau-Desvoidy 
A diagnosis of the genus and a discussion 
of the species which occur in New Guinea are 
being reserved for a later study of the pupae 
of the tribe Megarhini. 
Megarhinus (Toxorhynchites) inornatus 
Walker 1865 
The pupa of this species remains undescribed, 
but Hill (1925: 67) published figures of its 
terminal abdominal segments, the paddles, and 
the trumpet. 
Megarhinus (Toxorhynchites) splendens 
(Wiedemann) 1819 
Brief superficial notes and figures of the pupa 
of this species were published by Banks (1908: 
233) but are probably of no diagnostic value. 
Barraud (1931: 1131) included a few notes 
and figures of the paddle and part of segment 
VII based on specimens from India. Since 
Barraud was interested only in distinguishing 
among the Indian species of the genus, his key 
characters and descriptive notes which are 
quoted below are probably of little significance 
in New Guinea. 
Paddle wide and rounded, less than 1 Vi times 
as long as greatest width; one of the five inner 
hairs near the posterior margin of tergite 7 very 
long and stout, reaching beyond the posterior 
margin of tergite 8. The larger lateral hair on 
segment 7 long and stout, usually much longer 
than tergite 8, and often as long as greatest 
width of paddle. Of the sub-median and sub- 
lateral hairs, one is long and black on tergites 
2, 6 and 7, and two on tergites 3, 4 and 5; the 
larger hair on segments 2 to 7 is long. 
Genus TR1PTEROIDES Giles 
Diagnosis. — Trumpets short with tracheoid 
portion reduced to a very small fraction of the 
base of the meatus. On segment I, setae H, K, 
and L placed about equidistant from each other. 
On segments II-VI, seta A a small lateral spine; 
A-VII and A-VIII large, fan-shaped plumose 
tufts. Seta B a long simple seta on segments II 
to VI. Paddles short, not exceeding the apices 
of setae A-VIII posteriorly; midrib weak; pad- 
dles without terminal setae; lateral face at least 
twice the width of medial face. 
Subgenus Rachisoura Theobald 
The pupae of none of the fourteen New 
Guinean species of this subgenus are repre- 
sented in our collections. However, Belkin 
(manuscript) completely described and figured 
two species from Guadalcanal, Solomon Islands, 
and thus provides us with at least a temporary 
diagnosis of the subgenus. 
Diagnosis. — S eta b-VII short, not more than 
one-half the length of segment VIII; seta B the 
most conspicuous seta on segment II, equal to 
or longer than seta 2 -II; upper postocular seta 
( 1 ) of cephalothorax simple. 
Subgenus Mimeteomyia Theobald 
Diagnosis. — Seta b-VII short, not more than 
one-half the length of segment VIII; paddles 
tapering to a narrow blunt apex; seta 2 the 
most conspicuous seta on segment II, usually 
twice as long as B; upper postocular seta ( 1 ) 
of the cephalothorax two- or three-branched. 
Tripteroides (Mimeteomyia) argenteiven- 
tris (Theobald) 1905 
Fig. 12 
Cephalothorax. — Postocular: 1 long, 
usually two-branched, occasionally three- 
branched; 2 very long, two-branched; 3 small, 
simple or two-forked. 
Anterothoracic: 4 medium, usually two-forked 
near base, occasionally simple; 5 medium, two- 
forked; 6 medium, simple; 7 long, simple. 
Dorsal: 8 long, usually simple, occasionally two- 
forked. 
