( -^iv ) 



the free ends of which terminated in minute chitinous spines 

 in a recess lying under the fourth abdominal segment. The 

 adjacent margin of the fifth segment was thickened and set 

 with strong teeth. The non-glandular part of this singular 

 structure was conjectured by its discoverer to be a stridulating 

 organ ; but no evidence of stridulation had been obtained. It 

 was certainly far more complex than most, if not all, other 

 stridulating organs known to exist in insects. 



Fa2)ers. 



Mr. G. J. Arrow communicated "Notes on the Kutelid 

 genera Anomala, Mimela, Po2nllia, and Striyoderma." 



May 3rd, 1899. 

 Mr. R. McLachlan, F.R.S., in the Chair. 



Exhibitions, etc. 



Dr. A. L. Bennett exhibited various insects which he had 

 collected in the French Congo. They included a species of 

 Mantidpe remarkable for its very striking resemblance in 

 coloration to a piece of bark. 



Mr. F. ExocK exhibited a living specimen of Nepa cinerea 

 infested with a number of minute red Acari on the ventral 

 surface of the abdomen. He also showed eggs of Xepa lying 

 in situ in decayed leaf-stalks of Alisma. Most authors, he 

 said, described the eggs of Nepa as being laid end to end in a 

 chain, with the long filaments of each grasping the egg next 

 above it ; but this was an error. The eggs were laid in an 

 incision made by the female, each being pushed in up to the 

 base of the expanded filaments at an angle of about 30° ; the 

 next egg above was placed close to the first and cemented to 

 it, the filaments interlacing with one another. Sometimes a 

 row of nine or ten were laid in this manner ; but the eggs 

 were never placed end to end, as such an arrangement would 

 pi'event the young from emerging. Showing also some eggs 

 of Notonecta in sitit in a stem of Alisma, Mr. Enock stated 



