460 REPORT OF STATE GEOLOGIST. 



ing up and down in evident expression of satisfaction. Unless I had 

 provided very liberally not an aphis would be found in the jar the 

 next morning and the sluggish crickets would have every appearance 

 of plethora." 



141. CEcANTHUS ANGUSTiPENNis Fitch. Tlie Narrow-winged Tree Cricket. 

 (Ecnnfhu>< an;/ii^tiprnni.-< FitcAi, 56, XVI, 1H56, 404; McNeill, 88, VI, 



1891, 8; Bl., 5, 1892, 143 (in part); Hart, 73, in, 1892, 38, 

 Fig. 5; Scudd., 168, XXHI, 1898, 67; Id., 188, 1900, 90; 

 Beut., 3, VI, 1894, 251, 270, Fig. 3; Bruu., 32, 1895, 118; 

 Lugg., 84, 1898, 271, Fig., 179. 



Pale greenish white, each of the first two basal joints of the an- 

 tenna with a black mark, that on the first joint being elongate and 

 hooked inwards at the base; the mark on second joint oblong, slight- 

 ly curved. Head smaller and pronotum narrower 

 anteriorly tlian in niveus. Tegmina narrower than 

 in any other species except quadripundatus. Inner 

 wings slightly surpassing the tegmina in length. 

 Measurements: Length of body, male, 12'mm., fe- 

 Fig. 117. Basal male, 11.5 mm.; of pronotum, male and female, 2.75 



joints of anten- „, . ., ,„ t -,n n • 



nx oi (Ecanthus iniii.; of tcgmiua, male and female, 12 mm.; ot mner 

 anguxtipennis winas, male and female, 13.5 mm.; of hind femora, 



Fitch 



male and female, 8.5 mm.; of ovipositor, 5.5 mm. 



The narrow winged tree cricket is not a common insect in Indiana, 

 having so far been taken only in Vigo, Putnam and Crawford coun- 

 ties. It frequents tlie borders of gTOves and especially ironweeds in 

 open woods pastures and reaches maturity about July 15th. Scud- 

 der gives its range as "New York to Kentucky and Nebraska." 



The note of angudipennis is fainter than that of niveus and may 

 be represented by rccceece, lasting about five seconds, and terminat- 

 ing abruptly, with an equal interval of rest. It usually sings at night 

 only, but sometimes also late in the afternoon in shady places, and 

 on cloudy days. 



142. fficANTHUS FASCiATUS Fitcli. The Striped Tree Cricket. 



(Ecanthm fdxHatus Fitch. 56, X^^, 1S56, 414; McNeill. 88, VI, 1891, 

 6; BL, 5, 1892,148; Hart, 73, III, 1892, 38, Fig. 1; Scudd., 

 168, XXIII. 1893, (56; Id. 188, 1900, 90; Bruu., 32, 1895, 69, 

 113; Lugg., 84, 1898, 271, Figs., lSO-182. 



(Ecanthm niffricomix Walk., 2 19, I, 1869, 98; Sauss., 132, VI, 1874, 

 461; Beut., 3, VI, 1894, 250, 270, Fig. 4; Scudd., 188, 1900,90. 



Greenish yellow; the head and pronotum either wholly black or 

 with three more or less distinct lengthwise black bars. Legs yellow- 



