384 THE CANADIAN ENTOMOLOGIST 



secretes an enzyme capable of changing starch to sugar, and has 

 also demonstrated the presence of salivary glands opening extern- 

 ally in Philonix nigra Gillette and Amphibolips confliiens Harris. 

 We may conclude, then, that at least one enzyme is present in the 

 salivary secretion of the larvae of the Cynipidse and that this acts 

 as a pre-digestive ferment on the contents of the nutritive zone. 

 By its action, starch is changed into a readily soluble substance, 

 and is consequently readily absorbed by the digestive tract of the 

 larva. On account of this amylalytic ferment in the larval secretion 

 the nutritive zone will become stored with an unusually large 

 amount of available nourishment which can diffuse to all parts of 

 the gall. The material thus prepared supplies nourishment for 

 both the larva and the gall. The protoplasm of the latter is thus 

 rendered unusually active since it receives an abnormal quantity 

 of available food material in a limited area. The hypertrophy 

 and cell proliferation and probably also the appearance of vestigial 

 tissue, or other primary characters, are, in my opinion, the response 

 of the protoplasm cf the host to the ac'dilioral feed supply. 



CHRYSCMELIANS OF ONTARIO. 



BY F. J. .A. MORRIS, PORT HOPE, ONT. 



The title of my paper may be misleading to come of you, and 

 I should like at the outset to explain my attitude. It is simply 

 that of a nature-lover led (more or less by accident) to collect some 

 of the insects observed by him about trees, flowers and leaves, 

 while roaming about the countryside with what Wordsworth calls 

 "a heart that watches and receives." 



Of technical knowledge I have little or none to ofifer, and my 

 interest in the economics of Entomology is subject to prolonged 

 fits of catalepsy; indeed, I doubt if it has ever shaken off this 

 blanket of suspended animation sufficiently to appear in really 

 stark-naked wide-awakeness. The fact is, an amateur collector 

 is drawn chiefly by the giddy jDleasure of the eye; most of the time 

 he goes about craving new specimens, probably those of large size 

 and bright colour; he is an enthusiastic and irresponsible schoolboy, 

 easily pleased, easily deceived. I ki ew a collector orce in England 

 — I should have called him then, in my ignorance, an old man — 



November, 1013 



