SI'IiKA.MILY III. LorrSTIN.K. 367 



from basal third to near apex, the apical third being more than 

 half the width of base. Between this form and the typical one, 

 there is one with the dorsal margin strongly concave at middle, 

 the apical third therefore apparently broadened with apex oblique- 

 ly excised. This was described by Morse (1904a, 9) as M. decep- 

 ttix I Fig. 127, f). Another form with cerci very similar to the 

 typical one but with dorsal margin more concave and tip trans- 

 versely excised or snbtruncate, he described (loc. cit. ) as M. xiini- 

 lis (Fig. 127, //). I regard both these nominal species as, at the 

 most, only names for forms of male riridipcs having the cerci ex- 

 tremely modified as described, the females being absolutely in- 

 separable from those of riridipcs. His d crept us was based upon 

 specimens from Balsam, X. Car., Jasper Ga., and Vigo Co., Ind., 

 the Vigo Co. male cotypes being collected by myself, with a colony 

 of typical riridipcs, one of them having been used by Scudder as 

 a cotype of that species. Aside from the localities above given 

 the form cleccptus has been recorded by R. & H. from Black Moun- 

 tain, X. Car., Clayton, Ga., and Tennessee. Morse's southern spec- 

 imens were taken at heights of 2,600 to 6,1.00 feet, and he men- 

 tions it as inhabiting "deciduous forests at high elevations." 



J/. si in Hix was described by Morse from three male specimens 

 taken July 25 at Murphy, Cherokee Co., X. Car., in dry upland 

 forests of pine and oak. It has since been recorded by R. & H. 

 from near Bluemont, Va., and several points in Rabnn Co., Ga., 

 and by Kostir from Vinton, Ohio, 



Including as synonyms (I ere pi us and similis, the known range 

 of riridipc* is thus extended from Xew England southwest to 

 Rabun Co., Ga. A pair of the Georgia specimens labelled similis, 

 kindly loaned me by Davis, were found to be typical riridipcs, the 

 cerci having the tips rounded on dorsal side, not transversely ex- 

 cised. In the opinion of R. & H. (1916, 212) the .]/. /iircnrns 

 Scudd. (18971), 14) was based upon a specimen of riridipcs placed 

 by accident with his series of .]/". puer. the locality. Ft. Reed, Fla., 

 being derived from one of the latter. 



Series II. THE DECORUS GROUP. 



Slender bodied species of small or medium size, having the 

 general color pale brown or greenish-yellow with a dark shining 

 postocular stripe extending back at least as far as metazona; 

 hind tibia 3 greenish-yellow; pronotnm with median carina sharp, 

 distinct throughout, hind margin subtruncate or broadly rounded, 

 prozona one-half or more longer than metazona, sides of disk 

 parallel, male, feebly divergent, female; tegmina oval, shorter 



