452 EEPORT OF STATE GEOLOGIST. 



It is continued for most of the night and on cloudy days. When the 

 sun is shining brightly it usually begins about mid-afternoon and 

 continues with but little pause until the dawn of the next day, unless 

 the caller is, in the meantime, successful in wooing with his music 

 one of the opposite sex within reaching distance. 



On September 18, 1898, I was in late afternoon in a wet prairie 

 near Hammond, Indiana, where 0. fasciatus was more than usually 

 abundant on clumps of wild sunflower. A half dozen or more pairs 

 were seen in copulation. In this act it seems that the female mounts 

 the body of the male, the latter first raising the tegmina until they 

 stand at an angle of about 45 degrees, so as to give the female access 

 to a pair of glands which lie immediately beneath the base of wings. 

 The female worked at these glands with her mandibles, the male 

 meantime moving the inner wings gently sideways, in and out. After 

 working over the glands for- ten or fifteen minutes, the female would 

 usually leave the body of the male and crawl onto an adjacent head 

 of the sunflowers. The male meantime kept the tegmina raised, 

 seemingly in waiting for her return, which was always at the end of 

 five or six minutes. During the process, no intromittent organ of 

 the male was noticeable, nor was any union of the parts at the end 

 of the abdomen seen. Is it possible that in the mating of these 

 CEcunthids the female removes the semen from the glands whose 

 openings are beneath the tegmina of the male, and then fertilizes 

 her ova? 



143. CEcANTHUS QUADRiPUNCTATUS Beutenmuller. Tlie Four-spotted Tree 

 Cricket. 

 (Ecanihnx qmulripimctatu,^ Bent., 2, \a, 1994, 250; Id., 3, 271, Fig. 5; 



Scudd., 188, 1900, 91. 

 (Ecanthv.^ f(m-i<itn,^ Hart., 7 3, III, 1892, 33 (text in part), Fig. 2; Lugg., 

 84, 1898, 272, Fig. 183 (text in part). 



Males, greenisli white, females yellowish green, in color. Anten- 

 na' light brown, the basal joints pale green with two black marks on 

 each; those on the second joint oblong, parallel, the inner about 

 double the length of Ihe outer; the inner mark on lower or basal 

 joint, two-thirds the length of the joint, its upper end curved out- 

 ward, but not united with the outer mark, which is short and almost 

 round. Wing covers a little narrower than in fasciafus, the inner 

 wings protruding slightly beyond their tips. 



Measurements: Length of body, male and female, 11.5 mm.; of 

 pronotum, 2.G mni.; of tegmina, male, 12 mm., female, 10.5 mm.; of 

 inner wings, nialc, i:)."i nini., t'lMuale. 12.5 nun.; of hind femora, male 



