292 THE CANADIAN ENTOMOLOGIST 



merits, and one pair on each of the remaining segments except the 

 prothoracic, which has none. Maximum length, 1.8 mm. 



This species is nearest Isotoma grandiceps Reuter, from Siberia 

 and St. Lawrence Island, Alaska, but differs from the description 

 of grandiceps, particularly in the form and markings of the head, 

 the colour of the body, number of eyes, and number of mucronal 

 teeth. 



Arnprior, Ontario, Canada, December to April, inclusive; 

 Charles Macnamara. Ten cotypes. 



Explanation of Plate VII. 



Isotoma macnamarai. — Fig. 1. Dorsal aspect, from photo- 

 micrograph by Mr. Macnamara, X 35. Fig. 2. Eyes of left side, 

 X 346. Fig. 3. Sense organ of third antennal segment of right 

 side, X 1120. Fig. 4. Right hind foot, X 653. Fig. 5. Right 

 aspect of right mucro, X 653. Fig. 6. Setae, median dorsal line 

 of third abdominal segment, X 346. 



ENTOMOLOGICAL COLLECTIONS OF THE LATE W. H. 



HARRINGTON. 



The Entomological Collections of the late Mr. W. H. Harring- 

 ton have been acquired by the Entomological Branch of the De- 

 partment of Agriculture, Ottawa, and will be incorporated in the 

 Canadian National Collection of Insects. The collection is par- 

 ticularly rich in the parasitic families of the Hymenoptera in which 

 Mr. Harrington was specially interested. It contains a number 

 of types of Provancher's species, as indicated in Messrs. Gahan 

 and Rohwer's account of the "Lecto types of the Species of Hymen- 

 optera (except Apoidea) described by Abbe Provancher," given 

 in several issues of The Canadian Entomologist from volume 49, 

 No. 9, p. 298 to volume 50, No. 6, p. 196; accordingly, any types 

 described as being in the Harrington Collection will now be found 

 in the National Collection at Ottawa. 



September, 1918 



