380 KEl'OHT OF STATI-: GEOLOGIST. 



when the former covering about three-fourths of the abdomen in the 

 female and reaching or sliglitl}' sur])a>^sing its ti]) in the male; when 

 developed, fully twice the kiigth of abdomen; the wings extending' 

 4 mm. beyond the tegmina. Femora greenish ])rown, very rarely 

 l)right green, the til)ia' and t:'.rsi darker. Abdomen ta])ering but 

 slightly jjosteriorly, with the liase of osipositor hut little enlarged. 

 Posterior femora heavy on their basal tvvo-tlfths. slender beyond, 

 armed on their lower outer carina with two to four minute blackish 



Fig. 95. J[iphidiuw attenuutumScMdd. Female. (After Lugger.) 



spines. Cerei of male long, broad, with the a})ica.l third gently taper- 

 ing, the basal tooth minute, slender. Ovipositor excessively long, 

 slender, straight or but gently curved, the apex very acuminate. 



Measurements: Male — Length of body, 18-15 mm.; of antennae, 

 73 mm.; of pronotum, 2.G mm.; of tegmina, short winged form, 8.5 

 mm.; of long winged form, 19 mm.; of hind femora, 1-1 mm. Fe- 

 male — Length of body, 13-1() mm.; of pronotum, 3 mm.; of tegmina. 

 short winged form, 10 mm.; long winged form. 19 mm.; of hind fe- 

 mora, 14 mm.; of ovipositor, 26-30 mm. 



The short winged form of this specie?^ has proven much more 

 abundant locally in Indiana than the long winged form. In Vigo 

 County it was, ten years ago, very plentiful about the borders of two 

 large ponds in the Wabash River bottoms. In Knox County a few 

 specimens were secured in 1901 from the margin of a similar pond 

 bordering a large cypress swamp, whik' in Kosciusko County it was 

 found to be quite common in some nuirshes near Tippecanoe and 

 Turkey lakes. In all these places the insects dwell among the tall 

 rank grasses and rushes growing in shallow wati'r. The males are, 

 as far as my experience goes, the most active leapers among the 

 winged Locustida^, jumping a half dozen or more times without pause 

 when flushed, and in the net leai)ing so ra]iidly from side to side 

 as to prevent capture with the fingers, '{'he females are evidently 

 handicapped in their leaping powers by the excessive length of the 

 ovipositor, and so more often endeavor to escape by burrowing be- 

 neath the dense masses of fallen grass and reed stems which are al- 

 wavs found in their accustomed haunts. 



