418 Jilll'OKT OF STAIl': (iEOLOGIST. 



the nest. The intestine of a Mynnecophila wliich I dissected was 

 found to contain oil-gloLides and a granular whitish substance." 



Five species of Mynnccophila are known from the United States. 

 Of these but one occurs east of the Mississippi Elver, and it was 

 knowii only from M.irvland, (Jeorgia and the District of Columbia 

 until I'JOl, when it was found in luunlxTS in southern Indiana. 



123. Myrmecophila pergandei Bruner. 



Myrmerup/dh jHTf/anda Bruu., 2 1, XVI, 1884, 42, Fig. 4; Riley, 12 2. 

 n, 1884, 181; Scucld., 18 7, VIII, 1899, 424, 425; Id., 18 8. 

 190(), 87. 



Color: Dark reddish brown, the front and hind margins of pro- 

 notum, the hind margins of the other dorsal segments as well as the 

 apex of ovipositor, a darker piceous brown; the legs, eerei and base 

 of antennae and ovipositor a paler brown. The young are generally 

 paler than the adults. 



Body broad oval, depressed; nearly twice as long as broad; hind 

 femora pyriform, more arcuate below than above. Ovipositor rather 

 stout, straight, the inner valves a little shorter than the outer. 



Measurements: Length of body, male 3-4 mm., of female, 4-5 

 mm.; of hind femora, female, 3 mm.; of ovipositor, 2.5 mm. 



This small ant-loving gryllid was first taken in Indiana near Xcw 

 Harmony, Posey County, on April 26, 1901. It was afterward found 

 to be rather common in the region thereabouts as well as in Knox, 

 Perry, Dubois, Crawford, Orange and Lawrence counties; the north- 

 ernmost point at which it has been observed being near Mitchell, 

 Lawrence County. Since its kiu)wn general range is southerji it 

 probabl}^ does not occur in the northern half of tbe State. Witli us 

 it is found in coni])any with a hall' doxen species of ants, the most 

 common of which is a rather large yellowish-red form, probably 

 Caniponofiis nirllctis Say. ^V\\v cricket seems to be always on the 

 move, and when distui-hcd lc;i]is with great agility. Those taken in 

 Crawford County in Sej)teniher were almost double the size of those 

 noted in the spring and prol)al)ly more accurately represent the ma- 

 ture insect. But little is as yet known of the life ha1)its of these 

 interesting insects and the suliject is well worthy of prolonged ob- 

 servation. 



Subfamily GRYLLIN.T]. 



Tliis sub-family comprises the ground and field crickets. They 

 are among the most common members of the order Orthoptera; 

 aljounding everywhere in temperate and torrid climates. The main 



