in; 



Much less common than either of the preceding, having been noted, as 

 far as known, only in Vigo county, where it frequents the tall sedges and 

 willows bordering the large ponds in the W abash River bottoms. The 

 young feed upon the leaves of the scarlet oak, Quercus coccinea, Wang., and 

 the perfect insect is often found on or beneath this tree. It has been re- 

 corded before from New Jersey, Maryland, and the District of Colum- 

 bia. August 12 and 27th* 



III. Microcentrum, Scudder (1862.) 

 Size large. Wing covers moderately expanded in the middle, much 

 longer than the posterior femora, and with the outer border sloping off 

 quite sharply, thus causing the tip to be more pointed than in Amblycory- 

 pha Vertex much as in that genus, slightly furrowed. Eyes broadly 

 oval, very prominent. Hind legs slender and very short, the femora but 

 little more than half as long as the tegmina. Ovipositor very short, bent 

 abruptly upwards, bluntly pointed, and with the apical third finely ser- 

 rate above. Anal plates of male not prolonged. 



"This genus differs from Amblycorypha, to which it is most nearly allied, 

 especially by the cut of the wing covers and the shortness of the hind legs 

 and ovipositor."— Scudder. 



But one species is known to occur in Indiana. 

 8. Microcentrum latjrifolium, (L.) The Larger Angular-winged Katy- 

 did. The Oblique-winged Katydid. 

 ^Gryllus lanr ifolius L., Syst. Nat. II., 1767, 695, No. 17." 

 Phylloptera laurifolia, Burmeister, Handb. d. Ent., II., 183S, 693. 



Serville, Hist. Nat. des Orth., 1839, 404. 

 Microcentrum laurifolium, Bruner, Bull. Washb. Coll. Nat. Hist., I., 1885, 

 127. 

 Fernald, Orth. N. Eng., 1888, 21. 

 McNeill, Psyche, VI., 1891, 22. 

 Smith, Cat. Ins. N. J., 1890, 409. 

 Microcentrum affiliatum, Scudder. Boat. Jour. Nat. Hist., VII., 1S62, 447,, 



a g 5. 



Riley, Stand. Nat. Hist., II., 1884, 191. 

 Comstock, Int. to Ent., I., 1888, 116. 

 Microcentru$ retinervis, Riley, Sixth Rep. Stat. Ent. Mo., 1874, 155, figs. 

 43-47. 



* Unless otherwise stated, the dates given in this paper are those on which the first 

 mature insects have been taken in Central Indiana. 



