38 



Mr. S. Maulik, B.A., F.E.S,, read a paper on Orjptostome 

 Beetles in the collection of the Cambridge University Museum. 

 The collection is a representative one, containing species from all 

 parts of the world. Three new genera, one new subgenus, and 

 two new species are described. 



Mr. H. G. Newth, A.R.C.S., F.Z.S., gave a preliminary account 

 of his investigations into the early develoj)ment of the Echino- 

 derm Gitcumaria. The larval life is very short as compared 

 with that of the Auricularia. It takes place at the expense of 

 the yolk, and is complete in about five days. Formation of the 

 coelomic vesicles occurs by the bending and constriction of the 

 archenteron. No separate anterior coelom appears. The hydrocoel 

 ring closes in the left dorsal interradius, aiid the radial canals 

 and five primary oral tentacles arise directly from it, alternating 

 with one another. The internal madreporite arises as a secondary 

 differentiation of the walls of the stone-canal. 



Mr. R. E, Turner, F.Z.S., F.E.S., communicated a paper on 

 the Wasps of the genus Pison. 109 species are dealt with, of 

 which 15 are described as new. Reasons, drawn from the nume- 

 rical distribution of the species in different areas, are given for 

 supposing the genus to be in a declining state — fifty of the total 

 number of species being from the continent of Australia. In 

 addition to Pison the small allied genera Aulacophilus and Pison- 

 opsis are dealt with, one new species of the former being 

 described. 



The next Meeting of the Society for Scientific Business will be 

 held on Tuesday, November 7th, 1916, at 5.30 p.m., when the 

 following communications will be made : — 



D. Seth-Smith, F.Z.S. 



Exhibition of specimens of various nestling Birds. 



R. I. PococK, F.R.S., F.Z.S. 



Exhibition showing some undescribed or little-known Scent- 

 glands in Mammals. 



