408 Dr. David Sharp on the structure of the 



acts as a sort of hinge, and allows the part to be 

 lifted, and when this is done the oedeagus and its 

 theca are seen placed just beneath the membranous 

 basal part of the cauda ; the theca is a large tubular 

 or conico-tubular structure open at top only, and there 

 displaying the extremity of the oedeagus, which consists 

 of an extremely delicate minute tube and of a pair of 

 plate-like lobes projecting just beyond the theca. 



The reilexed and elevated i)Osterior angles of the 

 chamber in this species are, I think, clearly homologous 

 with the transverse line, which 1 have described in 

 JSIcgarhijnchus limatus as being the inferior process, and 

 it should be noticed that different entirely as this part is 

 from the inferior accessory appendage of the Tesscrato- 

 mince, yet the two have this in common, viz., that the 

 tips of the lateral appendages are co-ordinated with the 

 inferior appendage, so that the two have clearly a rela- 

 tion in their movements. 



11. Nezara riridula, L. Hab. Madagascar. Fig. 16, 

 PI. XIII. — This insect, though possessing a great super- 

 ficial resemblance to Nezara sp. ?, described above, 

 differs so strongly from it in the male characters that I 

 doubt whether the two can be correctly placed in the 

 same genus. The characters, as will be seen on a com- 

 l)arison of the figures, are similar to those of the genus 

 Edessa. 



12. Nezara marginata, De Beauvois. Hab. Volcan de 

 Chiriqui, Panama. Fig. 17, PI. XIII. — The characters 

 are ver}^ similar to those of Nezara sj). ?, from Mada- 

 gascar, the distinctions being in size and form of the 

 various parts. 



13. Dalpada ocidata (subfam. Pentatomince). Hab. 

 Assam. — The external characters, so far as I can see 

 them in the only individual I possess, are not very 

 remarkable ; the rectal-cauda is very large, elongate, 

 and greatly deflexed, and possesses along the middle a 

 fine line having the appearance of a suture ; the lateral 

 appendages are very large, and are shining and polished, 

 in strong contrast to the contiguous parts : there is 

 apparently a small inferior process in the form of a 



