36 THE CANADIAN ENTOMOLOGIST. 



far as I could make out, from that of 0. vulgare. They were found in 

 company with the latter among the tall grass and sedge that border the 

 " Eau." My single female was taken at Point Felee from an open marsh 

 bordering a creek, Aug. 8, igoi. 



i6. Orchelimum nigripes, Scudd. 



Orchelifimm tiigripes, Scudd., Proc. Bost. Soc. Nat. Hist., XVII. , 



1875, 459- 



Xiphidium nigripes, Redtenb., Verb, zool.-bot., ges., Wien, 1891, j88. 



Measurements: Male, length of body, 19 mm.; of pronotum, 5 mm.; 

 of hind femora, 17 mm ; of tegmina, 20.5 mm. 



On Aug. 7, 1901, while collecting at Point Pelee, in a low wood 

 bordering a stream, I heard a sound very like the stridulation of 

 Orchelimum vJilgare, but more subdued, the "jips" coming at much 

 shorter intervals, and more of them produced at a time. After two or 

 three attempts I succeeded in tracing the song to its source, and found an 

 Orchelimum, quite new to me, which proved to be O- nigripes. I took 

 another male in the same way, but, although I heard many more, I was 

 unable to find any of them. In several cases the sound proceeded from 

 trees, at a height of some ten or fifteen feet, but, as a rule, it came from 

 tall weeds and vines which grow in great luxuriance upon the rich black 

 soil. I also saw a male in an open marsh bordering the same creek, but 

 failed to capture him. 



17. Orchelimum CAMPESTRE, Blatchley. 



Orchelimum campestre, Bl., Can. Ent., XXV., 1893, 91. 



Measurements: Length of body, male 15-1S mm., female 16 mm.; 

 of pronotum, male 3.6-4.2 mm., female 3.9 mm.; of hind femora, male 

 14.5-16 mm., female 15.2 mm.; of tegmina, male 20.5-26 mm., female 

 28.5 mm.; of ovipositor, 7 mm. 



This slender and graceful species is probably confined to the south- 

 western section of the Province, especially along Lake Erie, where it 

 frequents open grassy marshes, like most of the other members of the 

 genus. 



Mr, Caudell, who kindly compared a pair, of these insects with 

 Blatchley's types of O. campestre in the U. S. National Museum, says that 

 they agree perfectly with the latter. They are quite like a pair from 

 Indiana, which I received from Mr. Blatchley, and are of about the same 

 size. 



Localities: Point Pelee, Aug. 8, 1901 ; Walpole Id., River St. Clair, 

 Aug. 13, 1901 ; marsh near Rondeau, Kent Co., Sept. 15, 1899. 



