1932 ] 
A New Culex from Panama 
83 
Male terminalia : Side-piece somewhat conically produced, 
bearing a lobe. The outer division of this lobe bears ap- 
pendages as follows: A long thick filament, with strong 
recurved hooked tip; two curved flattened filaments, about 
half as long as the preceding filament; a large membran- 
ous leaf, inserted near the base of the outer lobe, and nearly 
as long as the longest filament. This leaf is twisted about 
a quarter of a turn on its long axis, is finely striate, and 
curved outwardly (dorsally) and over the long filament. 
Fig. 1. Culex haynei sp. nov. Male terminalia, 
ninth tergite and tenth sternite. 
The inner division of the lobe of the side-piece is un- 
divided, short, stout, and bears two filaments, the outer 
long, strong, and with curved hooked tip. The inner fila- 
ment is about two-thirds the length of the outer, and is 
straight and much thinner. 
The clasper is unique among those of the Culicidse of the 
New World, and is sufficiently different from that of the 
other members of the genus Culex to warrant the erection 
of a section coequal with Helcoporpa, Dinoporpa, Mochlo- 
styrax and Melanoconion. We propose therefore the name 
Upsiloporpa. The clasper is long and slender, narrowing 
slightly at about three-quarters of its length, and then ex- 
panding to form a somewhat Y-shaped furcate tip. The 
