•104 Dr. David Sharp on the structure of the 



There is in this species an additional or superior 

 lateral process on each side, in the shape of a projection 

 inwards from the outer wall of the segment; it is a 

 polished subacuminate process of black colom-, placed at 

 the side of the cauda just at the termination of the 

 diaphragm. 



In the figure of this species (Fig. 4, PI. XII.) the 

 shape of the segment is not well rendered, and the 

 inferior process is not correct in shape. 



6. Eiirostus grossijies, Walk, (subfam. Tesseratomince). 

 Hab. N. India.- — Of this remarkable species I have only 

 a mutilated individual of the male sex at my disposal. 

 The characters are in most respects similar to those of 

 the other Tesseratomiiue I have described, more especially 

 to Eustlicnes eurytus, but with differences in all the 

 details, and with the important distinction that the 

 inferior accessory process does not project upwards 

 behind the processes of the lateral appendages, but 

 remains below them : the rectal-cauda is moderately 

 long, with its outer face deplanate, and it conceals the 

 oedeagus, which is surrounded by a striated theca of 

 pallid colour, but apparently of much less perfect 

 structure than that of Eustlicnes eurytus ; the lateral 

 appendages are large, and each is terminated by a free 

 slender process extending upwards and backwards, and 

 a little curved. 



7. Asijongopus ohscurus (subfam. Dinidorince). Hab. 

 Assam.— The arrangements of the parts are similar to 

 those of Tesseratoma, the lateral appendages being, how- 

 ever, very different in form ; they are curved round 

 behind the inferior process, and meet together in the 

 middle at some little distance behind this inferior pro- 

 cess, with which they are perfectly co-ordinated when 

 the latter is depressed, and they are, too, furnished with 

 a few elongate setse at the points where the parts come 

 into contact. A second species of the genus from the 

 same locality differs chietiy in that the lateral appen- 

 dages are still larger, and are in close contact with the 

 inferior process. 



8. Piezosternuin suhulatum, Fab. (subfam. Dinidorince). 

 Hab. Bogota. Fig. 10, PL XIII. — The structures in 

 this insect are so very diiierent from those of Aspongopus 



