1923. ] Anatomy and Bionomics of Red Cotton Bug. 25 
(i) Costa (COS.) is a prominent vein running parallel to the 
tal margin. 
(it) Subcosta (8. COS.) cuns below and parallel to the above. 
(111) Radius (RA.) a conspicuous vein lving just below the 
subcosta; the proximal portions of the two veins 
coalesce. 
(iv) Median vein (Me.) runs just above and parallel to the 
suture clavis with its distal end curved up. 
(v) Cubitus (CU.) lies below and parallel to the suture 
clavis. 
(vi) The Anal (ANA.) is a narrow vein running along the 
inner or the proximal margin of the wing. 
The medio-cubitus and radio-median of Comstock are 
absent. 
There are two cells (areas surrounded by veins on all sides) 
in the membrane region (M.c.1, M.c.2) in the majority of the in- 
dividuals examined, but in a few there were three. The 
number of veins also varies from 6-8 and tbeir branching may 
be different in the right and left wings of the same individual. 
Hind wings like the forewings are attached to the thorax 
by the chitinous ossiculae. These wings are wholly membran- 
ous except at their costal margins which are very thick. The 
following veins which are named after Fieber (Ent. Hemi pt. 1861, 
p. 13) can be recognized :— 
Costa primaria (COS. P.) running parallel to the distal mar- 
gin of the wing. Costa subtensa (COS. S.) lying parallel to the 
costa primaria, the two being connected to each other by a trans- 
verse vein, the costa connectus (COS C.). Costa apicalis (COS. 
A.) starting from the junction of the costa connectus and costa 
primaria. Below the costa apicalis runs another vein (unnamed 
by Fieber) starting from the costa connectus. This vein is 
present in Anasa tristis (Tower, 27). Costa decurrens (COS. D ) 
egins from the junction of the costa subtensa and costa 
connectus, and costa lineata runs parallel. along its proximal 
region, to the costa subtensa. Lying below costa subtensa are 
two veins, the costa radiantus (COS: R. : 
w are given the measurements (average of 10 speci- 
mens) of some of the more important regions of the Thorax— 
A. Prothorax.— 
Length of notum os .. 204mm. 
Breadth ss 3°2 mm. 
Colla : . 13lx 5mm 
Pleuron.— 
Lower margin - .. L3lmm 
Sternum length on .. 1Omm 
Upper margin 24 .. 209 mm 
B. Mesothorax.— 
Length of scutoscutellum oo 1°28 mm. 
