FAMILY VI.— LOCUSTID^. 253 



nota nearly conceal the epimera of the thoracic segments; 

 coxas differing but iilightly from Ceuthophilus ; hind femora 

 very heavy, thijk, and especially broad; in the males the 

 hind femora are spined beneath; the lore and middle femora 

 are shorter and heavier than in Ceuthophilus ; tarsi, with 

 the first and tourth joints equal and longest; second and 

 third equal and small, the second overlapping the third 

 above; the ovipositor is rather short, thick at base, slender 

 at apical half. 



Two species are found in Minnesota. 



Body piceous, occasionally with faint rufous spots. 



nigra. 



Body varying in color from dark testaceous to mahog- 

 any brown robusta 



Udeopsylla nigra Scudder, 



Shining black, with a faintly indicated, narrow, reddish 

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

 half oi the inner surface of hind femora and the terminal half 

 of the ovipositor, reddish. The hind iemora of the male 

 have upon either edge of the under surface, but especially 

 on the inner, short but heavy spines, not crowded ; the third 

 tibia? are furnished on either edge of the upper surface with 

 four or five op|)Osite, long, and slender 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, 

 w^hich become double towards 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. 



Measurements. — Length of body, 20-23 mm.; of hind 

 femora, female, 14 mm., male, 18 mm.; of ovipositor, 8.25 

 mm.; of antennae, 25 mm. 



A specimen was found on June 28 in an old cellar in 

 Hamline; others in the Red River Valley under some rubbish 

 lodged against an old log. 



