86 The Ottawa Naturalist. [Oct. 



a fresh water shell of the genus UniOj collected on the Island, 

 was discussed, and the statement made that a large number of 

 specimens of rocks and shells secured in the Ottawa district 

 had been collected during the summer. These he hoped to 

 exhibit to members of the Club at a later date. 



Mr. J. R. Dvmond, of the Seed Branch, Department of 

 Agriculture, discussed many of the plants which had been found 

 growing on the Island. A number of species were shown and 

 identified. None of these were of uncommon occurrence, but 

 their names were asked for by some of the members present. 



The common leopard frog, which frequents the damp places 

 of the Island, was shown by Mr. Andrew Halkett, and remarks 

 made upon its life-history. A tadpole of another species of frog 

 was also shown, and explanations given as to how the gill 

 apertures become closed as the frog assumes its lung-breathing 

 function, and how the paired limbs develop. Specimens of 

 land-mollusks, viz.: juveniles of a helicoid, snails with their 

 shells of the genus Succinea, and two small shells of a gastropod, 

 requiring determination, were exhibited. 



Mr. F. W. L. Sladen, Assistant Entomologist for Apiculture at 

 the Experimental Farm, showed some males of Vespa diabolica 

 captured at raspberry flowers, in which the markings varied. 

 He called attention to the neglected field of the study of wasps 

 and wild bees, viz.: the superfamilies, Vespoidea, Sphecoidea and 

 Apoidea. During the past season he had taken two or three 

 thousand specimens of these in the Ottawa district, consisting 

 of over 300 different species, not a few of which are probably 

 new to science. 



Mr. Arthur Gibson, First Vice-President of the Club, who 

 had charge of the excursion, spoke in conclusion on certain 

 insects which were noted, mentioning particularly the Burdock 

 Gelechiid (Metzneria lapelld), the larvae of which are so useful 

 in destroying the seeds of burdocks and which hibernate in the 

 heads, and the galls of Pontania pomum, known as the Willow 

 Apple Gall, which had been found abundantly on the leaves of 

 Salix discolor. Freshly emerged specimens of "the beautiful large 

 dragon fly, A mix Junius, were also shown. 



Experimental Farm, September 27th, 1913. Thirty 

 numbers of the Club met at the end of the car line at 3 o'clock. 

 A visit was first made to the memorial erected to the memory of 

 the late Dr. James Fletcher, one of the founders of the Club. 

 The party then, under the guidance of Mr. Arthur Gibson, 



