236 ORTHOPTERA OF NOVA SCOTIA. — PIERS. 



to species which may possibly extend into this province from 

 a more southerly range, but which have not yet been taken 

 here or to the north of us, are placed in footnotes. 



Relative abundance of Nova Scotian Orthoptera. — Although 

 the number of our species is small, yet certain species are 

 very numerous in individuals, and thus make up to some 

 extent for the paucity of kinds. The relative scale of abund- 

 ance I have adopted, and the approximate placing of the 

 various species in the divisions of the scale, are about as 

 follows; although it must be borne in mind that some species 

 may be quite common in particular localities and yet more 

 or less rare in others. Some seasons also affect the relative 

 abundance. 



The following table of relative abundance refers to the 

 vicinity of Halifax, on the Atlantic coast ot the province, 

 the fauna of which belongs to the Canadian Zone: — 



Excessively common. — Nemohius fasciaius; Melanoplus 



femur-ruhrum. 

 Very common. — Melanoplus hivittatus; Chorthippus curti- 



penms; Conocephalus fasciatus; Circotetttx verruculaius ; 



Scuddaria pistillaia. 

 Common. — Dissosteira Carolina; Gryllus pennsylvanicus 



neglectus; Blattella germamca (in town houses). 

 Rather common. — Blatta orientalis (in town buildings). 

 Rather uncommon. — Melanoplus atlanis (on one occasion 



excessively common on Sable Island). 

 Rather rare. — Mecosiethus gracilis; Camnula pellucida; 



Scudderia furcata. 

 Rare. — Meccsiethus lineatus; Nomotetlix cristatus. 

 Very rare. — 

 Hypothetical. — Podisma glacialis; Melanoplus fasciatus. 



Foi comparison with this, C. B. Gooderham has furnished, 

 at my request, the following similar table of relative abundance 

 of species about Truro, Col. Co., which may be taken as 



