tt'niiiiuiL sajment in some male Ilemiptera. 401 



The posterior edge of the segment, which is very variable 

 in form, is called the lip. 



In reference to the Plates XII., XIII., XIV., which 

 illustrate the following descriptions, I must say a few 

 words of explanation. Such figures are very difficult to 

 draw, owing to its being far from easy to see with 

 definiteness into the depths of the chamber in which the 

 pieces are placed ; thus anyone who has not dissected 

 specimens fails to catch the relations of the pieces, 

 especially at their bases and in the depths of the 

 chamber, and this has happened in the case of several 

 of the figures here given. The structures, too, are much 

 more delicate than the plates give an impression of, so 

 that, owing to this and to the absence of colour in them, 

 they do not convey at all adequately the idea of elegance 

 and ornamentation which I think would be perceived by 

 all who inspect the parts in their natural — especially if 

 fresh — condition. 



II. Descriptions of the male characters in some species 

 of PentatomidcB. 



Owing to the kindness of my friend Mr, W. L. Distant, 

 who has determined the species for me, and given me 

 such other information as I sought from him, the names 

 here used are no doubt correct ; a most important point 

 in such descriptions. 



1. Tesseratoma nigripes, DalL* (subfam. Tesserato- 

 mhm). Hab. N. India. Fig. 2, PL XII.— The rectal- 

 cauda is quite short and very broad, and its hind margin 

 ciliate ; behind it, but a little beyond it, there projects 

 upwards the inferior process, which is of very hard con- 

 sistence, subacuminate at the extremity, and concave in 

 front ; there is a space between it at the apex of the 

 rectal-cauda, and there does not appear to be any special 

 provision for defending the orifice of this latter part. 

 The lateral appendages are very large and of comj^lex 

 form, the inner margin of each is accurately adapted to 

 the side of the rectal-cauda, and, passing close to the 

 inferior process, is furnished at the apex with a small 

 abruptly bent-in process, which, when the inferior appen- 



* This species has the peculiarity of having the lower wiugs 

 beautifully coloured. 



2e2 



