1912] The Ottawa Naturalist. 69 



the dryer fields outside the woods and was delighted at rinding 

 four examples of an undescribed Spherobius quite new to my 

 collection although if my memory is not at fault I have seen 

 one specimen in some collection sent to me for names. Here 

 also I took large numbers of my Criocoris canadensis and on the 

 dryer knolls found Oncotylus punctipes Reut. in great numbers 

 and Mimoceps gracilis on the sedges. 



On July 2nd I went to Chelsea for a day as the guest of Mr. 

 Gibson, where I found conditions quite different. My first 

 surprise was to find Stenotus binotatus Fabr. in great abundance 

 in the grassy openings in the woods. Another common species 

 was a Strongylocoris of which I had seen a few specimens but 

 which I have not yet been able to determine. Laccocera vitti- 

 pennis VanD. was abundant here as it is everywhere in the more 

 stoney regions of Canada and New England. Pkilaronia 

 bilineata Say was taken here in company with the ubiquitous 

 Philcenus lineatus Linn., a species which seems to be spreading 

 slowly westward and I fear in time may prove a real pest. It 

 has long been common in northern New England and New York 

 but has only recently reached Buffalo, where it is still rare. 

 Along the Gatineau River I secured a fine series of Oncopsis 

 variabilis Fh. and a few sobrius, jene stratus and pruni. Pacilo- 

 capsus dislocatus was common here and presented one or two 

 fairly distinct varieties which I had never before seen. 



On the 4th I did a little work in a swampy wooded pasture 

 by the trolley track beyond Rockcliffe Park and was lucky 

 enough to obtain from the willows there four examples of a 

 Lygus near pratensis which is entirely new to me unless it prove 

 to be a very dark form of rubicundus Fallen. Macropsis viridis 

 Fh. was very common here and was pairing as was also cana- 

 densis VanD. I was surprised to find that the black males of 

 these two species were absolutely indistinguishable and I believe 

 canadensis will prove to be but a dimorphic form of the female 

 viridis. I might add here that unfortunately we must change 

 the generic names in this family so Pediopsis becomes Macropsis, 

 the old Bythoscopus becomes Oncopsis and our Macropsis must 

 hereafter be Bythoscopus. 



On July 5th I went on to Quebec for the purpose of studying 

 the Provancher collection of Hemiptera now in the Museum of 

 Public Instruction there. Rev. V. A. Huard very courteously 

 gave me free access to the collection and did everything possible 

 to assist me in my work. A report on my study of this collection 

 will probablv appear in an earlv number of the Canadian Ento- 

 mologist. 



Returning, I stopped off at Montreal for a day's visit with 

 Mr. G. A. Moore, who showed me his excellent collection of local 



