30 



The males of P. ribesii might easily be taken for a different 

 species, for they are mainly black; whereas the females have honey-yellow 

 abdomens. 



The remedies against both Ribesii and Grossulariae are White Helle- 

 bore dusted over the bushes, or suds, made with whale-oil soap, sprinkled 

 over them. In dealing w^ith the pests prom.ptitude is necessary for their de- 

 foliations proceed with rapidity. 



Before they were killed by the Blaolq Knot, the plum trees in the 

 gardens at Levis were infested by the larvae of Selandria cerasi Peck. The 

 widened anterior segments of these creatures, and their attenuated af- 

 ter parts, together with their dark colour and slimy appearance, were 

 suggestive of tadpoles. Air-slacked lime sifted over the trees was the 

 remedy recommended against them. 



lu the years 1897-8, the yellow black-spotted larvae of Hylotoma 

 pectoralis Leach were very abundant upon birch around Quebec. 

 When full fed they spun white, loose cocoons in their retreats. The per- 

 fect insects were heavy and sluggish, and numbers of them were trodden 

 under foot by passers by. They were beautiful objects having black heads 

 Indian-yellow bodies, and wings suffused "with purple. I raised the par- 

 asite Pimpla inquisitor Say from this species. 



In drawing up the following list of saw-flies, taken in the vicinity of 

 Quebec City, and now in my collection of Hymenoptera at Ottaw^a, I 

 have follow^ed the classification and nomenclature of the late Dr. John _^ 

 Smith, Professor of Entomology at Rutgers College, U.S. and C.L. Mar- 

 latt. First Assistant Entomologist of the U. S. Department at Washing- 

 ton, D.C. 



LIST OF QUEBEC-SAW-FLIES. 



Lydidae 



Bactroceros pallimacula Norton 



Hy omidae 



Hylotoma clavicornis Fabricius. 

 Hylotoma pectoralis Leach 

 Hylotoma clavicornis Fabicius. 



Selandriidae 



Kaliosysphinga melanopoda Carn. 

 Monophadnus scelestus Cresson 



Nematidae 



Pontania hyalina Norton 

 Pteronus ribesii Scopoli. 



