March, 1904.] CaUDELL : ThE GeNUS CyPHODERRIS. 47 



Note by the Editor. 

 Mr. Taylor presents arguments which indicate that Agia eborata 

 Hulst is a synonym of Cysieopteryx viridata Pack., and that Hulst 

 made several errors in his generic definition of Cysieopteryx. Cysie- 

 opteryx, then, cannot stand, since it is founded on a total misconcep- 

 tion, although it has priority over Agia by two pages. Hulst placed 

 the genera in different subfamilies and we cannot conceive how he 

 could have made these mistakes except by a very marked misidentifi- 

 cation of Packard's viridata. If this be true, the species which Hulst 

 had before him remains to be found. 



Class I, HEXAPODA. 



Order XI, ORTHOPTERA. 



THE GENUS CYPHODERRIS. 



By a. N. Caudell, 

 Washington, D. C. 



This interesting genus, comprising the only winged representative 

 of the subfamily Stenopelmatinae found in North America, was de- 

 scribed by Professor Uhler in 1864.- The generic bibliography is as 

 follows : 



Uhler, Proc. Ent. Soc. Philad., ii, p. 551-552 (1864). 

 Scudder, Can. Ent., xxxi, p. II3, I17 (1899). 

 Scudder, Can. Ent., xxxiii, p. 18 (1901). 



The genus may be characterized as follows : 



Form short and stout. Legs short and moderately robust, the posterior pair 

 scarcely saltatorial. Anterior coxae bear an obtuse spine, often reduced to a merely 

 noticeable angular projection ; tarsi compressed, provided with pulvulii ; anterior 

 tibiae spined on both margins below, above on the inner margin only, dilated and 

 furnished with a broad and long tympanal cavity, visible on both faces ; femora 

 unarmed. Prosternum with a pair of broad, transverse, somewhat elongate tubercles ; 

 sternal plates prominent, posteriorly concave, the lateral angles usually quite promi- 

 nent. Elytra present, small in the female, large and with a well developed musical 

 organ in the male. Thorax cylindrical in the female, in the male posteriorily much 

 dilated and inflated. Genital organs of the male forming a short capitate process 

 projecting obliquely backwards from the base of the tip of the scarcely tapering abdo- 



