26 TRANSACTIONS OF THE 



SPECIMENS EXHIBITED, 



Mr. Camei^on exhibited two pine-feeding saw-flies, Lyda 

 erythrocephala, L., a rare and beautiful species from E/annocli; 

 Lyda nemoralis, L., from Paisley. 



Mr. A. Watt exhibited a specimen of Fogonatum nanum, var. 

 longisetwn, gathered at Old Meldrum. 



15th April, 1873. 

 Dr. J. Stirton, President, in the chair, 



SPECIMENS EXHIBITED, 



Mr, P. Cameron exhibited a number of Ghahididce bred from 

 the galls of Teras terminalis, and made some remarks on their 

 habits and distribution through the galls ; some Lepidopterous 

 pupse (those of Ypsipetes ruberata) which had been devoured by 

 larvae of Chalcididse, between thirty and forty having been bred 

 from a single pupa ; and some dissected specimens of the common 

 Oil-beetle (Meloe proscarahaeus) and of the Humble-bee (Bomhus 

 lucorum), illustrating their internal anatomy. 



PAPER READ. 



Mr. D, Gregorson read a paper, in which he gave an outline of 

 the method that should be pursued by the student of Natural 

 History in investigating any branch of the science, taking for his 

 type Ranunculus Jicaria, of which fresh specimens were exhibited. 

 He pointed out the importance of studying the life histoiy of 

 particular plants or animals, and how very profitable this would 

 be, not only to the individual student, but to science. In the 

 conversation tliat followed it was stated that plants having 

 reservoirs of starch in tubers were particularly adapted for 

 growing under water, the extra quantity of starch affording an 

 extra amount of heat. 



29th April, 1873, 



Mr. J, Allan, Vice-President, in the chair. 



The following gentlemen were elected resident members: — 

 Messrs. -^neas M'Master, David Pearson, Richard K. Howie, 

 W. J. Milligan, and J. M'Murtrie. 



