414 REPORT OF STATE GEOLOfUST, 



"These sand crickets," sa3's Scudder, "are in general appearance, 

 miniature Gryllotalpas, tlinuiih, not being heavy bodied, they can 

 lvi\\) vigorously, l)()un(liiig liigh in the air. Nothing is more curious 

 than these lively and pigmy mok'-crickets; they live in similar places, 

 and make burrows like th(> mole-crickets, but their forelegs, though 

 constructed for Inirrowiiig, are very diH'erent in detail. They are 

 not. ]io,wever, found in (niitc such wet spots as the mole-cricket 

 haunts, preferring the sanely margins of ponds rather than muddy 

 ones. Their burrows are at first vei'tical, but immediately turn, run- 

 ning not more than an iiuli below the surface of the ground, and are 

 very narrow, as woubl bt' expected of such little creatures; one meas- 

 ured was hardly a twenlielb of nii inch in diameter. The males are 

 not provided with any tandiouiine njxm tlu' wings, and therefore cari 

 not sing." 



But one species of Tr'ulachjJus is known from Indiana. 



121. Tridactylus apicaliS Say. The Larger Sand Cricket.. 



Tridartylus apmdi>^ Say, 138, IV, 1825, 810; Id., 139, II, 1S59, 239; 

 Scudd., 14 1, Vn, 1862, 425; Id., 188, 1900, 86; Id., 195. IX, 

 1902, 309; Pack., 104, 1883, 563; Riley, 122, H, 1884, 180; BL, 

 5, 1892, 129; Lugg., 84, 1898, 259, Fig. 168. 

 A> mixdcs Hald., 65, VI, 1853, 364. 



This is the largest of the three species of sand crickets occurring 

 in the United States, its length being 8 or 9 mm. 

 The body is black or dark brown, the head and 

 lliorax' with some white markings, and the tegmina 

 with their outer edge and a spot behind tlie middle 

 white. The hind femora are whitish with the upper 

 half of outer face brownish or with three dark cross- 

 bars. The wings of the male extend 3 mm. beyond 

 the tip of the abdomen. The fore tibiae of the males 

 of Indiana speeinu'us 1 iiiul to vary in like manner 

 as those of T. icrminalis mentioned by Morse. 

 Fig.iuj. friJactu- ^[casuremcnts: Length of body, 9 mm.; of teg- 

 lus apicaiu Say. mina, 3 mm.; of inner wings, 7.5 mm.; of posterior 



(After Lugger.) 



temora, o unn. 

 Apicalis has been noted in Indiana only in Putnam and Yigo coun- 

 ties. In tlie former it was taken in numbers in August, 1893, and 

 again in June, 1894, from a damp sandbar along Walnut Creek, two 

 miles east of Bainbridge. Both here and in Vigo County it was in 

 com})any with tlie next species. It occupied small pits or burrow's 

 in the sand, and would sometimes be seen resting with the head and 

 half the body outside the opening of the pit, into w^hich it backed as 



