152 ENTOMOLOGICAL NEWS [Apr., '17 



On Coelophyllum simplex and certain of its Allies 

 (Orthoptera, Tettigoniidae). 



By James A. G. Rehn, Academy of Natural Sciences, Phila- 

 delphia, Pa. 



(Plate XII) 



In 1875, Scudder described from the Peruvian Maranon a 

 very peculiar katydid, which he called Coelophyllum simplex, 

 new genus and species.^ These names were not mentioned 

 again until 1896, when Scudder- said: "Coelophyllum is a genus 

 of Phaneropterinae, not recognized by Brunner in his mono- 

 graph or in the supplement to it, and which seems to be most 

 nearly allied to the Old World genera forming his group Holo- 

 chlorae, though very different from either of the three genera 

 recognized by him." Kirby. in 1906, placed^ the genus in the 

 vicinity of PJianeroptcra, while Bruner, in 1915, in a key to the 

 American genera of the Phaneropterinae,'* apparently follows 

 Scudder's suggestion as to its position, as he gives as its diag- 

 nostic feature a character which differentiates the Holochlorae 

 and certain other Old World genera groups. This feature is : 

 "Anterior tibiae on their inner margin with the auditory fora- 

 mina shell-like or sublinear, externally typically wide open." 



We now have before us the unique female type of Scudder's 

 genus and species, which we find to be generically inseparable 

 from Brunner's Prosagoga, erected, three years later than 

 Scudder's genus, on a species from Surinam." The insect is 

 a most peculiar one, with the tegminal shape and structure, 

 form of the head and pronotum, folding of the wings and 

 structure of the ovipositor quite distinctive. The foramina of 

 the cephalic tibiae are open normal width caudad, while cepha- 

 lad they are narrowly open, with a trace of a conchate develop- 

 ment ventrad, but this is weakly indicated and the surface of 

 the membrane is plainly visible, not fully covered over by the 

 bulla as in forms typically conchate ("shell-like") or linear. 



1 Proc. Boston Soc. Nat. Hist., XVII, p. 263. 



2 Ibid, XXVII, p. 210. 



3 Synon. Catal. Orth., II, p. 437. 

 *Ann. Carneg. Mus., IX, p. 289. 



5 Monogr. der Phaneropt., pp. 29, 320, (1878). 



