ORTHOPTERA OF NOVA SCOTIA. — PIERS. 233 



to have been seen on Sal>le Island, N. S., by 28 May, 1896. 

 and it was stated that they were a month later than in 1895 

 (vide letter of Supt. R. J. Boutillier, of 28 May, 1896, referred 

 to under M. atlanis). 



From the foregoing table we see that the dates of the 

 appearance of non-hibernating adults range from about 30 June 

 (M. atlanis) to about 12 Aug. (^S. curvicauda horealis), the 

 warmest period of the year; and averages about 18 July. 

 The autumnal disappearance of these adults ranges from 

 about 12 Sept. (Conocephalus fasciatus), which is the approxi- 

 mate time of the first hoar-frost (13-29 Sept.), to about 12 

 Nov. (Nemohius fasciatus) which is about the time when the 

 first snow whitens the ground (31 Oct. - 14 Nov.); and 

 averages 19 Oct., which is about the average date of the first 

 hard frost (16th Oct.). 



Number of species in Nova Scotia.— The passing out, to 

 the south of us, of species less northerly in range, and the 

 paucity of strictly boreal forms, has resulted in our orthop- 

 teran fauna being a very scanty one as regards the number 

 of species, when compared with that of regions to the south 

 of us. This is just as would be anticipated. The present 

 list contains 28 species (two of which are inserted hypotheti- 

 caDy, as almost certain to occur here because they have 

 been taken to the north and to the south of us), 18 genera 

 (one of which is included hypothetically), 10 subfamilies, 

 and 4 families. Of species which may possibly occur this 

 far north, as they are found more or less commonly in Maine, 

 I have referred to about 15 in footnotes, and of these no doubt 

 less than 7 will ever actually be taken here; so that it may 

 perhaps be fair to surmise that about 35 species is the utmost 

 we can ever hope to expand our list to, and even that is 

 probably an excessive estimate. 



Now as compared with 28 species from Nova Scotia (with 

 a possibility of something less than 35 in the future), we 

 find that: 



Proc. & TRAN8. N. S. Inst. Srr., Vol., XIV Trans. 16 



