THE CANADIAN ENTOMOLOGIST. 



i8. Orchelimum Indianense, B1. 



Orchelimutn Indianense, BL, Can. Ent., XXV., 1893, 90. 



Measurements: Length of body, male 16.5 mm., female 15 5 mm.; 

 of pronotum, male 3.4 mm., female 3.5 mm.; of hind femora, male 13.25 

 mm., female 14.5 mm.; of tegmina, male 18 mm., female 20 mm.; of 

 ovipositor, 6.8 mm. 



This is the smallest species of Orchelimum found in Ontario, and is 

 readily known by the transparent whitish green of the tegmina, and the 

 dark stripe down the middle of the face. My specimens appear to average 

 slightly smaller than those from Indiana. 



I found this pretty little species common near Sarnia, in a large tract 

 of open grassy marsh land bordering the St. Clair River. This land had 

 been entirely submerged earlier in the season, but when I visited the place 

 the ground was dry and cracked. Several other interesting Orthoptera 

 were taken here, among them Cotiocephalus JSFebrascensis, Brun., and 

 Orphidella pelidna, Haan, neither of which have been noted elsewhere in 

 Canada. 



I have also taken O. Indianense in open marshes at Arner and 

 Walpole Id., in each case a single example. 



Localities: Arner, Essex Co., Aug. 9, 1901 ; Walpole Id., River St. 

 Clair, Aug. 13, 1901 ; Sarnia, Aug. 14, 190 1. 



19. Orchelimum delicatum. Bruner. 



Orchelimum gracile, Brun., Can. Ent., XXIII., 1891, 70. 



Orchelimum delicatum, Brun., Ent. News, IIL, 1892, 264. 



Measurements: Length of body, male 18.5 mm., female 18 mm.; of 

 pronotum, male 4.1 mm., female 4.2 mm.; of hind femora, male and female 

 16.5 mm.; of tegmina, male 20.3 mm., female 20 mm.; of ovipositor 

 10 mm. 



I sent a female of this Orchelimum to Mr. Blatchley, who gave his 

 opinion that it was probably delicatum, and kindly lent me a specimen 

 from Indiana for comparison. This specimen closely resembles mine in 

 every respect, except that the ovipositor is nearly straight, while in all of 

 my three females it is distinctly curved. The comparative straightness of 

 the ovipositor is one of the characteristics of delicatum as defined in 

 Bruner's description, so that my specimens may belong to another species. 

 They agree with delicatum in other important features, however, as, for 

 instance, in the very delicate texture of the tegmina and in the unusual 

 length and breadth of the ovipositor, and it seems better to regard them 

 as the same species until the matter is settled by further collecting. 



