50 THE EEPOET OP THE No. 36 



" The defiant, desperate battle which civilized man wages with nature must 

 go on. . But man's suffering and loss in the struggle — the delay of his ultimate 

 triumph — depends solely on how much or how little the great civilized communi- 

 ties of the world seek for increased knowledge of nature as the basis of their prac- 

 tical administration and government/' 



At the close of the lecture, which was listened to with great interest and 

 attention by those present, the Chairman (President Creelman) expressed the 

 thanks of tlie audience to Dr. Hewitt for his instructive addres® in a warm and 

 hearty manner, which was emphasized by the applause that followed. He spoke 

 of the respect he felt for the type of man who is content to spend his life quietly 

 and patiently carrying on scientific investigations, such as those described by Dr, 

 Hewitt, and, though unobserved and unappreciated by the general public, yet doing 

 a work of inestimable value to humanity. 



iSEOOFD DAY'S SESSION"— FRIDAY, NOVEMBER 24th, 1911. 



At about 9.30 a.m. the members of the Society met in the Museum of the 

 Biologioal Department and ispent a pleasant hour in the examination of the many 

 interesting specimens whiclh they had brought for exhibition. 



Mr. Gibson, in illustration of his paper on Blister Beetles, exhibited a case 

 containing representatives of the different species which occur in Canada. These 

 are described in his paper in this report. He also showed some interesting lepi- 

 doptera, viz., Gonodontis warneri, Harv., from Humboldt, Sask., Hydriomena 

 ruherata, from Saskatoon, Sask., and BciagrapMa atrofasciata, Sciagraphia con- 

 tinuaia and Macaria lahradoriata from Ottawa. 



Mr. iSwAiNE exhibited a collection of Ipidse, including the adults and work 

 of our more interesting species from Eastern Canada. Among the species repre- 

 sented were Chramesus icorice, Lee; Crypturgus atomus, Lee; Dendroctonus sim- 

 plex, Lee; D. valens, Lee; D. piceaperda, Hopk. ; Dryoccetes affaber, Mannh. ; Z>. 

 autographus, Eatz. ; D. eiclihofji, Hopk.; Dryoccetes, n. sp., from larch; Eccopto- 

 gaster picece, Swaine; Gnathotrichus materiarius. Fitch; HylasUnus obscurus, 

 March; Hylesinus aculeatus. Say; Hylesinus, n. sp., from basswood; Hylurgops 

 pinifex, Fitch ; Ips halsameus, Lee. ; I. ccelatus, Eich. ; I. calUgraphus, Ger. ; 7. 

 grandicollis, Eich.; I. pini, Say; 7. horealis, Swaine; PTilcesirms dentatus. Say; 

 Phlceotrihus Uminaris, Harris; P. picece, Swaine; Pityogenes, n. sp., from pine; 

 PityopMhorus capiniceps, Lee. ; P. consimilis, Lee. ; P. lautus, Eich. ; P. opaculus, 

 Lee. ; P. minutissimus, Zimm. ; PolygrapTius rufipennis, Kirby ; Pterocyclon fas- 

 ciatus. Say; P. mali, Fitch; Hylastus salehrosus, Eich,; Trypodendron hetulce, 

 Swaine; T. politus. Say; T. retusus, Lee; Xylehorus dispar, Fabr. ; XyUhorus ser- 

 ratns, Swaine. 



Me. Winn exihibited a number of interesting Lepidoptera, as follows: — 



Incisalia eryphon, from Hymers, Ontario; Falcaria hilineata, from Dawson 

 City, Y.T. ; Xylina amanda, hemiria, thaxteri and haileyi, from Hymers, Ont. ; 

 AutograpJia rectangulum, from East Bolton, Que.; A. swrena, from St. George's, 

 Newfoundland; a series of 25 specimens of Cenopis pettitana, showing range of 

 variation of fore wings from immaculate white, through yellow, spotted and banded, 

 to reddisih brown; a male Colias pliilodice, with the right hind wing only about 

 one quarter the size of its mate, but not creased or crumpled in any way; and 



