\\t mmm\\ Jtittiimola^bt. 



Vol. XXXVI. LONDON, JULY, 1904. No. 7 



THE CRICKETS OF ONTARIO. 



BY E. M. WALKER, B. A., M. B., TORONTO. 



(Continued from page 144.) 

 Subfamily Gryllin^. 

 This subfamily includes the common field and ground crickets, and 

 is represented in Ontario by two genera, Nemobins and Grylliis. These 

 may be separated as follows : 



a. Small species ; last joint of maxillary palpi twice as long as the 

 one preceding ; hind tibiae furnished with long movable spines ; 

 first joint of hind tarsi unarmed above, or with one row of small 



teeth Nemobius. 



aa. Medium-sized or large speciesj last joint of maxillary palpi but little, 



~ if any, longer than the one preceding ; hind tibife armed with short 



immovable spines : first joint of hind tarsi sulcate above, with a 



row of teeth on each side Gryllus. 



Genus Nemobius. 

 This genus is best known by the common little striped ground 

 cricket ( N. fasciaius), which abounds in our fields and roadsides in late 

 summer and autumn. Our other species are all much more local and less 

 numerous in individuals, and are not likely to be taken by the collector 

 unless he is specially looking for them. 



Key to Ontario species of Nemobius. 

 a. Ovipositor as long as or barely shorter than the hind* femora, straight 

 or nearly so. 



b. Ovipositor distinctly longer than hind femora, black of body 

 arranged in lengthwise bars. 



c. Ovipositor a fourth longer than hind femora, colour light 

 grayish, with distinct black markings ; size medium or 



■* rather small i. JV. griseus, n. sp. 



cc. Ovipositor not more than about an eighth longer than hind 

 femora, size large. 



