GLASGOW SOCIETY OF FIELD NATURALISTS. 63 



egg is seated on a pedicel, and has at the top a peculiar valvular 

 opening to facilitate the egress of the mature embryo. 



By Mr. F. G. Binnie. — Specimens of Balia perversa from 

 Campsie Glen. 



By Mr. Peter Cameron, jun. — N'ematus histrio, LePel = rufescens, 

 Hartig, a saw-fly new to the British list. It was bred from 

 larvae found on the west coast of Inverness-shire. The larva, which 

 fed on Salix aurita, was of a pale green colour, dotted over with 

 small black points, and with a dark green stripe bordered on each 

 side with a narrower white one ; the cocoon was long, scarcely 

 cylindrical, composed of a brown-coloured silk. He also exhibited 

 the saw-fly described by De G-eer as Tenthredo salicis, Linn, which 

 is, however, quite difierent from the true Nematus salicis of Linn 

 (of which specimens were exhibited), which is a much larger insect, 

 and instead of having the head and thorax black, as in De Geer's 

 species, has only a square black spot on the top of the head and 

 another on the mesonotum and breast. 



EXCURSION. 



Calderwood Glen. — Mr. Richard M'Kay gave an account of this 

 excursion. There was a good turn-out of members. Numerous 

 objects of interest were seen, but the only things worthy of special 

 mention were the three uncommon mosses — Tortula insulana, 

 Gymnostomwni rv/pestre, var. stelligerum, and Bryum pallescens — 

 collected by Mr. Alexander Watt. 



2nd June, 1874. 

 Mr. Peter Cameron, jun., Vice-President, in the chair. 

 Mr. James Kirkland was elected a i-esident member. 



SPECIMENS EXHIBITED. 



By Mr. Richard M'Kay. — Arabis hirsuta, Cnicus heterophyllus, 

 and Asplenium viride, all from the neighbourhood of Kilsyth. 



By Mr. Peter Cameron, jun. — A saw-fly, Selandria grandis, 

 Zaddach^AS. inter stitialis, Thomson, similar in coloration to the 

 common .S'. serva, but is much larger, and the second recurrent 

 nervure is received into the second submarginal nervure, which is 

 not the case with S. serva. This species was also taken in the 

 district. 



By Di-. James Stirton. — A number of cryptogamic plants, chiefly 



