26 Journal of the Asiatic Society of Bengal. [N.S., XIX, 
Breadth in widest regio 1-7 mm 
Scutum (length and breadth the same) we 
Pleuron upper margin. 134 ,, 
Pleuron lower margin Mill, 
Sternum .... £17 ,, 
Forewing 10 x 3°30 mm 
C. Metathorax— 
Pleuron, upper margin .. ~ ee min, 
Pleuron, lower margin .. as = {cape 
Sternum < a pe OB. 
Wing 4 = Ps ee wee 
Leg— 
Femur [| 3:16 mm 
Femur III .. eee. le 
Tiba I — 25 43 Ones 
Tiba III cig eee 
Tarsus I =f os err 
Tarsus [Il Hee 9 epee 
he Abdomen. the ebdobied in the Rhynchota has at- 
tracted the attention of a few authors, The study of the 
genitalia is coming into prominence and various workers 
(Newell, Sharp, etc.) have attempted to discuss the homologies 
of the different abdominal segments with their appendages ; but 
so far no definite conclusion seems to have been arrived at. 
David Sharp (22) invented a special nomenclature with reference 
to the terminal segment in some male Hemiptera. According to 
Verhoeff, the typical number of abdominal segments in the 
Hemiptera is eleven. In five out of six hemipterous forms that 
Newell (17) studied, 10 segments were present, the eleventh 
having disappeared, whilst in the sixth-—Anasa tristis—the 
female had 11 segments and the male 10. According to Tower 
(27) the female Anasa has 10 and male 9 segments. In 
Dysdercus cingulatus 10 segments are found in both sexes. Fur- 
ther study is required to determine whether the number 10 is 
a primitive feature or teat (the 11th having been aborted) 
as Lhe by Verhoeff, e 
The omen is aoneed to the thorax by a broad base. 
Its ae distinct and annular segments are loosely knitted 
together, allowing the abdomen to undergo expansion and con- 
Aes especially i in the female. In both sexes (Figs. 2, 3, 4) 
the six segments are seen to be made up of flat notum, 
red Sci bhican pleuron and sternal area with white patches 
on the posterior margin. 
pair of spiracles is present in the anterior dorsal corner 
of each of the first eight segments. Each spiracle (Fig. 4a) is 
a small round opening with somewhat thickened brown mar- 
"Three transversely elliptical openings of the stink glands 



