Ttti CA.NAUIAN KNTOMOLOGlS't. 39 



bowed, strongly spined above and below. Antennae heavy, about as 

 long as the body. 



Length of body, ^ and $. 22 mm.; of antennae, about 24 mm.; of 

 posterior femora, ^ and $. 12. 5-14 mm.: of hind tibiae. ^ and $, 

 16 mm. 



This hitherto undescribed cricket is a native of the sandy districts of 

 Nebraska, Dakota and Kansas ; and like the Daihinia brevipes Hald., to 

 which it has been compared, also burrows into the sand. So closely do 

 these two insects resemble each other at a cursory glance that I did not 

 distinguish their difference until about to label them for cabinet specimens. 

 It is to be distinguished from Udeopsylla I'obusta and nigra by the 

 greater size of its pronotum, also by its less glossy appearance. In 

 colour it is a pitch-brown above and paler beneath. 



There is still another species of these large, wingless " sand crickets " 

 to be occasionally met with here in the West. It is the insect that I have 

 called Udeopsylla giga?iiea.* As that characterization was very brief, 

 the following description is herewith presented : — 



Very dark brown, almost black, with an interrupted dorsal line and 

 a few mottlings of a lighter shade. The posterior femora are very heavy 

 and clumsy in the male, reaching more than half their length beyond the 

 extremity of the body, furnished below with a row of nine short strong 

 spines ; posterior tibis three-sided, more strongly bowed than usual, and 

 furnished above with two rows each of four spines which alternate, and 

 between these smaller ones ; the, lower side also spined on apical half 

 Legs of female less inflated and not so strongly spined. 



Length of body, $, 30 mm.; $, 26 mm.; of antennae, $ and $, 

 about 30 mm.; of hind femora, $ , 24.5 mm., $, 17 mm.; of hind tibiae, rT, 

 25 mm., $, 19 mm. 



This insect appears to be much scarcer than either brevipes, robust a, 

 nigra or compacta, and is confined in its distribution to a much smaller 

 area. It also burrows in the ground and lives solitary. It has been seen 

 by me but once within the State, viz., in the vicinity of Lincoln, near the 

 large salt basin. It is also to be met with in Kansas and the Indian ter- 

 ritory — the pair upon which this description is based having been taken 

 in Kansas. 



•Bulletin of the Washburn Laboratory of Natural Histprj-, \'q\. I., p. 127. 



