NATURAL HISTORY SOCIETY OF GLASGOW. 183 



animal kingdom, and stated that their nearest living allies were 

 believed to be the sertularian group of hydrozoons or sea pens. 

 The specimens exhibited were from a bed of Silurian grey sandy 

 shale exposed in the banks of Penwhapple Glen, where these 

 graptolites are not uncommon, and where they exist in a less 

 compressed condition than those found in the Moffat beds. The 

 species obtained by Mrs Gray are Gro.pfolites iwiodon (common); 

 G. sedgivickii (rather rare); G. colonus (rare) ; Cijrtograpsus grayianus 

 (Lap worth, M.S.), a rare and interesting new species first found by 

 ]Mr Lapworth of Galashiels, in the Gala group of that district, and 

 which he proposes to name after Mrs Gray. Dicranograpsus 

 tardiusculus (Lapworth, M.S.), another new and rare species from 

 Balcletchie, this being, according to Mr Lapworth, the first time 

 the genus has been found in Silurian rocks of Caradoc age. 

 No specimens belonging to the group of double graptolites 

 (Diplogmpsus), have yet been discovered by Mrs Gray; but as the 

 beds have not hitherto been thoroughly searched, it is to be hoped 

 that examples in this interesting group will reward her future 

 labours. 



Mr Peter Cameron, jun., exhibited the egg-bag of a spider, 

 Agelena hrunnea, which had been found in the Black Wood of 

 Eannoch in Perthshire, attached to sprigs of growing heather. 

 It was somewhat well shaped, and was composed of a very beautiful 

 silk, white and glossy, forming a very elegant and interesting 

 object. Mr Cameron had found a few of these egg-purses powdered 

 all over with a fine dust ; but from the positions in which these 

 were placed, it was evidently not blown dust, but had been put on 

 by the spiders themselves. 



PAPER READ. 



On the Coleoptera of Rannoch. By Mr Peter Cameron, jun. 



The author, in his opening remarks, referred to the extreme pro- 

 ductiveness of that district in coleopterous insects, and assigned as 

 a reason that the Black Wood there, which is a remnant of the old 

 Caledonian Forest, was composed almost entirely of the Scotch 

 Fir (Pinus sijlvestris), a tree that had upwards of forty species ex- 

 clusively attached to it, besides many others that are common to 

 it and other trees. The paper was illustrated by a fine collec- 

 tion of specimens, and was accompanied by a full list of the 

 insects found. 



