108 THE CANADIAN ENTOMOLOGIST. 



broad, depressed. Supra-anal plate narrow, distinctly transverse, apical 

 margin very broadly obtuse-angulate. Cerci simple, moniliform, about 

 equal to the apex of the subgenital plate when extended. Subgenital 

 plate rather large, trigonal, the median portion with the usual rostrate 

 protrusion. Anterior coxse two-thirds the length of the pronotum, lower 

 margin being a continuous series of regularly disposed spines of two 

 alternating sizes ; femora considerably exceeding the coxje in length, 

 robust, anterior portion of the external margin bearing four large spines, 

 anterior portion of the internal margin bearing fifteen spines, several of 

 which exceed the others in length, and give a formula (reading from the 

 distal extremity) of Iiilililililili, discoidal spines four in number, 

 posterior portion of the lower face of the femora with a series of small 

 denticles ; tibise slightly more than half the length of the femora, external 

 margin with ten or eleven spines, internal margin with fourteen spines, 

 the spirjes on both margins increasing in size toward the distal extremity ; 

 metatarsi slightly less than half as long again as the remaining tarsal 

 joints. Median and posterior limbs moderately slender, the metatarsi of 

 the median limbs considerably, and of the posterior limbs slightly, shorter 

 than the remaining tarsal joints. 



General colour pale apple-green, touched with pale yellowish on the 

 pronotum and apex of the tegmina ; eyes blackish-chocolate ; stigma of 

 tegmina pale yellow ; wings hyaline, with numerous transverse tessellations 

 of yellowish-green. 



Measurement.s : 



Total length 64. mm. 



Width of head 9.6 " 



Length of pronotum 26. " 



Greatest width of pronotum 7.3 " 



Least width of pronotum 3.5 " 



Length of tegmina 34. 



Greatest width of tegmina 17. 



Length of wings 2S.3 



Length of anterior femora 21. " 



This specimen was forwarded for determination by Prof. C. F. 

 Baker, of Pomona College, Claremont, California. It is such a striking 

 and unique form that comparison with the other species of the genus is 

 hardly necessary. 



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