738 FAMILY VIII. GRYLLID^E. THE CRICKETS. 



teeth between them, also with three long inner and three short 

 outer subapical spurs ; basal joint of hind tarsi stout, usually 

 longer than the second and third united ; second joint small, 

 flattened, dilated and bilobed ; subgenital plate of male triangular, 

 conical and scoop-shaped; cerci long, slender, tapering, very 

 bristly; ovipositor as in key, its apex slightly enlarged. Kirby 

 (1906) recognized 49 genera as belonging to this subfamily. These 

 are mostly found in the Old World, only three being represented 

 ia the eastern States. 



KEY TO EASTERN GENERA OF ENEOPTERIN.E. 



a. Tegmina of male with a stridulating organ; fore tibise with a hearing 



organ; length of body less than 20 mm. 



b. Fore tibise with an auditory organ on inner face only; tegmina 

 rarely surpassing tip of abdomen; wings rudimentary or shorter 

 than tegmina ; terminal joint of maxillary palpi at least one- 

 third longer than the one preceding. I. HAPITHUS. 

 b&. Fore tibiae with auditory organ on both faces; tegmina in both 

 sexes surpassing the abdomen; wings slightly surpassing the 

 tegmina; terminal joint of maxillary palpi but little longer than 

 the fourth. II. OROCHARIS. 

 aa. Tegmina of male without a stridulating organ; fore tibia; without a 

 hearing organ; length of body 23 or more mm. III. TAFALISCA. 



I. HAPITHUS Uhler, 1864, 546. 



In addition to characters given in key the species of HapWius 

 have the head almost globular, narrower than base of pronotum ; 

 antennae about three times the length of body, their basal joints 

 much thickened and cylindrical; maxillary palpi with last seg- 

 ment enlarged at tip, obliquely truncate; pronotum short, nar- 

 rower in front than behind, the lateral angles rounded, front and 

 hind margins truncate; tegmina of male with humeral vein 

 prominent, forming a carina along the humeral angle; those of 

 female with anastomosing oblique veins and veinlets; wings rudi- 

 mentary; hind femora quite broad, though but little thickened. 

 Three species of the genus are known from our territory, one be- 

 ing an adventive only. 



KEY TO EASTERN SPECIES OF HAPITHUS. 



a. Form short, robust; tegmina covering three-fourths or more of 



abdomen. 



&. Antennae not or very faintly annulate with fuscous; pronotum 

 and tegmina a nearly uniform pale brown. (Native species.) 



349. AGITATOR. 



bb. Basal half of antennae distinctly annulate with fuscous; head, 

 thorax and tegmina thickly and irregularly sprinkled with fus- 

 cous markings; much larger and more robust. (Adventive.) 



VAGUS. 



