THE SIMULIDA. 167 
two species have been found in England, viz., Simudium humidum, 
Brodie, and Simulidium priscum, Westwood. In the tertiary rocks, 
Loew has recorded six species from amber, and Guérin one in 
Sicilian amber. ‘Culex, L. 
Tipula, Deg. 
Scatopse. 
GENus.—Simulium =) Chijyonomus. 
Atractocera, Mg. 
| Simulia, Mg. and Fries. 
Body small, gibbose, with a tomentum ; head small; palpi 4-jointed; 
first joint small, second and third longer, fourth long and composed 
of numerous little annuli, larger in 2 than in the g. Antenne 
r1-jointed, narrows to the tip, a little longer than head; first and 
second joints remotely connected, remainder closely connected, 
transverse, end joint conical. Wings large, first, second and third 
dark, remainder of veins pale. Legs stout, compressed, unarmed ; 
hind metatarsus incrassate in @, lengthened; in the 2? hardly 
incrassate; @’s generally black, 2 cinereous. Eyes contiguous in 
&, remote in 92. lLabrum in female lanceolate; labium linear, 
bidentate at tip ; lingua very long, divided, apical part hairy on outer 
surface. Also the antennz are more remote than in the ¢. 
: { Culex sericea, L. 
Tipula erythrocephala, Deg. 
Culex reptans, Schrk. 
Ragio columbatchensis, ¥. 
S. reptans et sericea, Mg. 
Atractocera argyropeza, Mg. 
a elegans, Mg. 
ef vartegata, 2, Mg. 
~ cincta, 8, Mg. 
* porticata, 2, Mg. 
The male is deep black ; the head is black, with the front whitish- 
gray. Palpi and anterinss brownish-black. Thorax with a gilded 
tomentum; sides white, an interrupted white band in front. 
Abdomen with the second and third posterior segments with silvery, 
often with an iridescent spot. Legs dark brownish-black. Anterior 
femora testaceous, anterior tibize silvery, middle tibize partly yellowish ; 
posterior tibize yellowish towards base; posterior metatarsi likewise 
yellowish. Halteres yellowish-brown. Wings limpid, veins near 
costa black, remainder light. 9? Black also, but with a cinereous 
tomentum, and a white spot on each side of thorax, in front, sides of 
thorax silvery. 
This is an abundant species, and very generally distributed, and 
S. reptans, L. = + 
