THE CANADIAN ENTOMOLOGIST. 203 



* , 



being 16 mm. long, and the latter passing them 2 mm., exceeding the end 



of the hind femora 1.5 mm. 



X. occidentale caudatum, var. nov. 



1 J , 2 2 , Mt. Shasta district, July, Hy. Edvvds , No. 165 (cab. S. H. 

 Scudder). In these specimens the ovipositor of the females is exception- 

 ally long, even relatively to the hind femora, the usual proportions of the 

 two being reversed, thus : Post, fern., 10-10. 5 ; ovip., 13. 5-14. 5 mm. 

 Nevertheless, in the absence of other evidence, I am disposed to regard 

 them as belonging to this species. 



In this connection it is of interest to note that specimens from 

 the Mt. Shasta region (Sisson, Gazelle), not only of this species, but of the 

 following (vicinum), have the ovipositor of exceptional length, as the 

 accompanying measurements will show : 



Roseburg and 



Ahwanee. 

 11 



8-3 

 Sisson. 



11. 5 10.5 

 10 9 



Compare also the relative proportions of the specimens from Rose- 

 burg and Grant's Pass with those of the Yosemite Valley. 



Xiphidium vicinum, sp. nov. 



Very similar in colour, size and structure to X. fasciatum of the east, 

 but with the ovipositor almost constantly longer, both actually and in 

 proportion to the hind femora, in long-winged females reaching the end of 

 the wings; wings and tegmina dimorphic, in long- winged examples passing 

 the apex of the hind femora 4-6 mm. ; in general, however, falling 

 short of their tip by 2-3 mm. The male often indistinguishable 

 from fasciatum, but with cerci showing a tendency toward greater breadth 

 across the basal part of the apical portion (just distad of the tooth), and a 

 less sinuous externo-lateral margin. 



In a considerable series oi fasciatum before me, the ovipositor ranges 

 in length from 50 to 69 % of the length of the hind femora. In vicinum 

 the range is from 67 to 95 %, and the actual measurements are as follows : 

 Ovip. H. fern. Ovip. H. fern. 



7 9-3 10 11.4-12.5 



8 9-3 -12 TI 12-14 

 9-5 \o-\\ J 3 ^Z-l-^^-S 



