143 



on the alert. Then the aphides provided for their food would be caught 

 up one after another with eagerness and devoured with violent action of 

 the mouth parts, the antennse meanwhile playing up and down in evident 

 expression of satisfaction. Unless T had provided verj' liberally not an 

 aphis would be found in the jar the next morning and the sluggish crickets 

 would have every appearance of plethora." 



15. OEcAXTHi s FAsciATUs, Fitch. The Striped Tree Cricket. 



(Ecanthus fasciatus, Fitch, Third Rep. Nox. Ins., N. Y., IS5(), 96. 



McNeill, Psyche, VI, 1891, 6. 

 (Ecanthus niveus, Harris, Ins. Inj. to Veg., 1862, 154, (In part), 

 liathvon, U. 8. Ag. Rep., 1862, 381. 

 In its general form this insect resembles the preceding, but it is always 

 darker in color, varying from a deep black to ivory white with fuscous 

 markings. Most specimens, however, are greenish white with three black 

 stripes on the head and pronotum and a broad dusky line along the center 

 of the abdomen beneath. The wing covers of the male are less broad in 

 proportion to their length than in niveus ; while the ovipositor is longer 

 and more distinctly turned upwards at the end than in that species. 



Measurements: Male— Length of body, 14 mm.; of wing covers, 11. "i 

 mm.; width of wing covers, 5.5 mm. Female — Length of ovipositor, 6.5 

 mm. 



In Indiana this species is fully as common if not more so than 0. niveus. 

 It is more frequently found on wild plants than that species, being, in au- 

 tumn, an abundant visitor of sun- flowers and golden rods. Mature speci- 

 mens were taken in Putnam county, as early as August 9th. 



16. (Ecanthus angistipennis, Fitch. The Narrow-winged Tree Cricket. 



(Ecanthus angustipennis, Fitch, Third Rep. Nox. Ins., N. Y., 1856, 95. 

 McNeill, Psyche, VI, 1891, 8. 



This species is readily distinguished by the narrowness of the wing cov- 

 ers of the male, their breadth being just about one third their length. The 

 wings are longer than in either of the two preceding, extending in one 

 specimen at hand, 9 mm. beyond the wing covers. The head and protlio- 

 rax are less prominent, and the latter is much narrowed anteriorly. The 

 general color is an ivory white, rather deeply tinged with greenish. 



Measurements: Male — Length of body, 13 mm.; of wing covers, 11.5 mm. 

 width of wing covers, 4 mm. 



Angustipennis probably occurs in all parts of the state but is much less 



