THE CANADIAN ENTOMOLOGIST. 17 



CYPHODERRIS MONSTROSA. 



BY SAMUEL H. SCUDDER, CAMBRIDGE, MASS. 



From time to time during the last two or three years, Dr. James 

 Fletcher has sent me specimens of a curious Locustarian taken at Banff, 

 Alberta, by Mr. N. B. Sanson, curator of the Government museum in the 

 National Park at that place. The specimens were all wingless and 

 apparently immature females, but quite unlike anything known from that 

 region. A study of their structure showed that they belonged to the 

 Stenopelmatini and were most nearly allied to the genus Cyphoderris. 

 Now, Cyphoderris, though described by Uhler thirty-six years ago, is a 

 rare creature and was on record from only two localities, Oregon and 

 Wind River, Wyo., and only males had hitherto been taken. The 

 probability that these immature and wingless females belonged with the 

 winged males appeared to me, however, so great that in my recent 

 catalogue of North American Orthoptera I recorded the species given in 

 the title above as found in Alberta. 



Nevertheless, I had misgivings and asked Dr. Fletcher to obtain 

 mature specimens to make sure. By his urgency, Mr. Sanson has 

 forwarded separately this last autumn two mature females alive, the 

 first of which Mr. Fletcher sent to me. These were in no respect 

 different from the immature specimens except in size and in slight traces 

 of wing-pads beneath the pronotal shield; while in the appearance of the 

 pronotum they differed so greatly from the male of Cyphoderris that I 

 was as much at a loss as ever ; for the male Cyphoderris has the posterior 

 half of the pronotum so hunched and enlarged as to be almost a half 

 broader posteriorly than anteriorly ; this is to give room for the coarse 

 and bellied tegmina, which it overhangs, which are considerably longer 

 than the pronotum, and nearly the whole of whose dorsal surface is made 

 up of a coarse stridulating organ. But the females sent had a pronotum 

 of nearly uniform diameter and practically no wings. Only by securing 

 a male from the same region or females from Oregon or Wyoming could 

 the question really be decided whether these represented closely-related 

 genera or the same or nearly-allied species. The matter has just been 

 definitely settled by the receipt of a male from Banff, kindly sent by Mr. 

 Sanson from his collection, which cannot be separated from the Oregon 

 types in my possession. Mr. Sanson responded generously to the 



