of the North American Orthoptera. 443 



Platte River above Fort Laramie, Nebraska, (Mus. Comp. 

 Zool.) 2^29. 



I have examined Haldcraan's types. 



2. U. NIGRA, nov. sp. (Fig. 2.) 



Shining black, with a faintly indicated, narrow, reddish 

 dorsal line, a reddish tinge on the front of the face, the 

 basal half of the inner sm-face of hind femora and the ter- 

 minal half of the ovipositor, reddish. The hind femora of 

 the male have, upon either edge of the under-surface, but 

 especially on the inner, short but heavy spines, not 

 crowded ; the hind tibiae are furnished on either edge of 

 the upper surface with four or five opposite, long, and slen- 

 der spines, between each two of which are placed three or 

 four suppressed spines ; there is a single row of short 

 spines upon the under-surface, which become double to- 

 wards the tip ; the inner valves of the ovipositor have 

 five teeth, growing longer and more curved towards the 

 tip, where they are very long and slender. 



Length of body, .8-9 in. ; of hind femora 9 .56 in. ; ^ .68 

 in. ; of ovipositor, .33 in. ; of antennae, about an inch. 1 <? 

 1 9. 

 Red River of the North, (Kennicott.) Minnesota, (S. H. S.) 



DAIHINIA, Haldeman. 



In this genus, while the tarsi of the mesothoracic legs 

 are as they appear in allied genera, the tarsal joints of the 

 anterior and posterior pair are only three in num- ^-^^—^ 

 ber, the first and last being of nearly equal ^^ ^^^^ 

 length, with a single small joint between them, 

 a very interesting exception to the almost univer- ^ ""^^^ 

 sal rule among the Locustarice. (See Fig. 3, Fig. 3. 

 a. b.) 



1. D. BREviPES, Hald., Proc. Am. Ass. Adv. Sc. ; II. 346. 



(Fig. 3.) ^ (1850.) 



D. brevipes, Girard, Orthop. in Marcy's Expl. Red 

 River of Louisiana ; 246. Zool. PI. XV. figs. 9-13, (1854.) 



