slg 
THE CHIRONOMIDZ. 185 
se pe ha Thorax with three brown stripes ; 
metathorax black. Veins white. Abdomen 
O. denotatus, Wik. ... fs brown, testaceous beneath towards the base. 
Legs pale testaceous. Length, 2} lin. 
, (Var. ? 2.) Whitish. Thorax as above. First, 
O. melaleucus, Mg. ... 7 second and third veins brown. Abdomen and 
legs brown. Length, 14 lin. 
\ Black. Wings whitish. First, second, and third 
O. alligatus, Wik. ... vr and discal transverse veinlet brown. Length, 
2 lin. (3). 
Hoary. Wings brownish along the costa. Ab- 
domen brown, livid beneath. Legs blackish- 
O. adjunctus, Wk. brown, long; femora thick. Length, r¥ lin. 
(9). 
O. coequatus, Wik. ... ... Black, shining. Legs brown. Length 14 lin, ( 2). 
Black. Abdomen blackish-brown. Legs dark 
O. appositus, Wik. brown, pubescent, long and slender. ngth, 
24 lin. (7). 
Pale testaceous. Veins andhalteres white. Legs 
short and stout. Length, 4 lin. (2). 
Black. First, second, and third veins tes- 
O. perexilis, Wik. 
taceous. Halteres blackish. Legs ferruginous ; 
tarsi black. Length, 14 lin. (¢). 
{ Black. Wings as above. Halteres whitish. Legs 
O. compertus, Wik. ... 
O. contingens, Wik. ... brown. Abdomen pubescent. Length, 14 lin. 
(d). 
Black. Thorax gray with three black stripes, 
First, second, and third veins black, rest brown, 
Halteres white. Legs stout, pubescent. Length, 
2 lin. 
Black. Halteres white with black tips. Legs 
whitish, slender. Length, I lin. (2). 
(Var. ? 2) Testaceous, Thorax with three brown 
stripes. First, second, and third veins brown, 
rest white. Abdomen with black dorsal stripe. 
Legs dull, testaceous. Length, # lin. 
Genus.—Camptocladius, V. d. Wulp. 
Wings naked ; cubital vein bends upwards, and ends considerably 
before the end of the costal; lower prong of the postical fork curved 
in an S-shape. Joints of the feet hairy, generally black ; first joint 
of anterior tarsi considerably shorter than tibic, anal ring in ¢ short 
and broad ; the forceps thick, white, with white hairs. 
O. fertus, Wik. 
O. habilis, Wik. 
O. pygmaeus, Mg. 
C. byssinus, Schrk. 
Dull black ; legs somewhat paler; blackish-brown, stout ; plumes 
of the antennze brownish-black, whitish towards the tips; wings milk- 
white ; halteres black; abdomen slightly pubescent. Length, ? to 
1} lin. 
C. aterrimus, Mg. 
Deep black. Halteres black. Wings with black upper veins, rest 
pale. Abdomen and legs very hairy; femora stout. Larger than 
the above (14 to 2 lin.). Common. 
