20 
THE CHINCH BUG. 
coriaceous, and two broad marks on the mesothorax, two smaller ones on the meta- 
thorax, two on the fourth and fifth abdominal sutures, and one at tip of abdomen 
are generally visible, but sometimes obsolete ; the third and fourth joints of antenme 
are dusky, but the legs still pale. After the second molt the head and thorax are 
quite dusky and the abdomen duller red, but the pale transverse band is still distinct ; 
the wing pads become apparent, the members are more dusky, there is a dark-red 
shade on the fourth and fifth abdominal joints, and 
ventrally a distinct circular dusky spot, covering the 
last three joints. (Fig. 2, c, d, e,f.) 
The pupa. — In the pupa the coriaceous parts are 
brown-black ; the wing-pads extend almost across the 
two pale abdominal joints, which are now more dingy, 
while the general color of the abdomen is dingy gray; 
the body above is slightly pubescent, the members are 
colored as in the mature bug, the three-jointed tarsus 
is foreshadowed, and the dark, horny spots at tip 
of abdomen, both above and below, are larger. 
(Fig. 2, sr.) 
The adult. — Blackish, hemelytra white, with a black 
spot. 
Inhabits Virginia. 
Body long, blackish, with numerous hairs. Antenme, 
rather short hairs ; second joint yellowish, longer than 
the third ; ultimate j oint rather longer than the second, 
thickest; thorax tinged with cinereous before, with 
the basal edge piceous ; hemelytra white, with a blackish oval spot on the lateral 
middle; rostrum and feet honey yellow ; thighs a little dilated. 
Length less than three-twentieths of an inch. 
Took a single specimen on the eastern shore of Virginia. 
The whiteness of the hemelytra in which is a blackish spot strongly contrasted 
distinguishes this species readily. 
Fig. 3.— Blissus leucopterus: 
adult of long-winged form — 
much enlarged (original). 
Fig. 4.— Blissus leucopterus: adults of short- winged form — much enlarged (original). 
To the foregoing description of the adult Dr. Asa Fitch, in his 
second report on the Insects of New York, adds brief descriptions of 
nine varieties, all, with but one exception, being based upon slight 
variations in color, some, perhaps, being due to immaturity, the single 
exception being the short- winged inland form, of which variations from 
the nearly wingless to fully winged are shown in tigs. 3 and 4. 
