190 The Ottawa Naturalist. 



OTTAWA SPIDERS AND MITES. 



By W. Hague Harrington, F.R.S.C. 



In the first number of the present volume, page ii, was 

 pubHshed a list of 6i species of spiders collected at Ottawa, and 

 kindly determined for me by Mr Nathan Banks. During the 

 past season my collections were, unfortunately not very exten- 

 sive but I was able to send recently to the same gentleman a 

 small lot which he has again been good enough to examine. 

 His list, which I append, shows that 35 species were represented, 

 of which 15, or nearly half, were not in the former sending. 

 These additions I have indicated by an as.terisk, and it will be 

 noticed that the family Lycosidae especially has furnished 

 several. One species is considered to be new and has received 

 the manuscript name given in list. 



Last winter I also sent to Mr. Banks a small collection of 

 mites, which had been obtained in sifting moss gathered in 

 November in Dow's Swamp. The list of the species is annexed, 

 and Mr. Banks wrote to me as follows in regard to them : — 

 " The first is a large, globose, shiny species found in moss, readily 

 known by its emarginate wing ; it is widely distributed. The 

 -second is not common. The third is not rare in moss, it has 

 dark spots from which arise bristles. The Oppia is new, it is 

 close to my Scutovertex pilosus, but differs in tectal plate and 

 less bristly body. The Nothrus is probably N. ru^ulosus, but it 

 js not quite adult. The Hoplophora is very distinct, being 

 strongly granulate. The Uropoda is probably new. You will 

 find others (Oribatids) in fungi, decaying vegetable matter, and 

 sphagnum moss. There should be some interesting Nothrids 

 from your locality, as they are rather common in Northern 



Europe." 



ARANEIN A— SPIDERS. 



DRASSID.^!;. 



Drassodes hutnilis Bks.* Gnaphosa conspersa Thor. 



Gnaphosa brumalis Thor* 



Clubionid.€. 

 Clubiona obesa Htz. Thargalia canadensis n. sp.* 



