This subfamily includes the common field and ground circkets, and is represented in Ontario by two genera, Nemobius and Gryllus. These may be separated as follows:a. Small species, last joint of maxillary palpi twice as long as the one preceeding; hind tibiæ furnished with long movable spines; first joint of hind tarsi unarmed above, or with one row of small teeth. Nemobius.