1918.] NATURAL SCIENCES OF PHILADELPHIA. 195 



to blackish fuscous; stridulating field similar in tone to the discoidal 

 three-fourths of the tegmina; stridulating vein broadly black, opaque 

 area proximad of same bright mustard yellow; bordering veins of 

 speculum lined with fuscous, first axillary distad with dragon's-blood 

 red, second with black. Wings with base tint as in tegmina, the veins 

 lined with russet. Metapleura marked dorso-laterad with two points 

 of mustard yellow. Abdomen with two proximal segments with 

 paired dots of mustard yellow on dorsal surface. Coxal region marked 

 more or less strongly with the same color. Venter of abdomen ob- 

 scurely buffy. Median femora faintly and brokenly lined with mus- 

 tard yellow on cephalic surface; caudal femora at proximal fourth 

 with sublunate spot on mustard yellow on dorsal face. 



Length of body, 16.2 mm.; length of pronotum, 4; greatest width 

 of pronotal disk, 3.2; length of tegmen, 24; greatest Avidth of teg- 

 men, 5.2; length of caudal femur, 15.5. 



The type of this striking and remarkable mimetic species is unique. 



The resemblance of it to certain sphecoid wasps is most extraordinary, 



and suggested the specific name. 



Stilpnochlora marginella (Serville). 



1839. Phylloptera marginella Serville, Hist. Nat. Ins., Orth., p. 405. ["Cape 

 of Good Hope."] 



Igarape-assu. One male. 



For comments on this species and close relatives, see a recent sum- 

 marj^ by the author,^^ 

 Anaulacomera nodulosa Stai. 



1873. A[naulacomera] nodulosa St&l, Ofvers. K. Vetensk.-Akad. Forhandl., 

 XXX, p. 43. [Surinam.] 



Igarape-assii. January 17 and February 1, 1912 (two specimens). 

 Four males, four females. 



These specimens are referred to Stal's species with some uncer- 

 tainty, as they are all larger than Stal's measurements, although cer- 

 tain individuals are comparable with the dimensions given by Brunner 

 for the species. The species much resembles A. albonodulosa, but 

 has the fastigium proportionately shorter and thicker, the pronotum 

 shorter, the cerci briefer and not completely curved and the tegminal 

 venation coarser. 



The species has been definitely recorded from Surinam (also 



Paramaribo) and Chapada, Matto Grosso, Brazil. 



Viadana myrtifolia (Linnseus). 



1758. [Gryllus (Tettigonia)] myrtifolius Linnseus, Syst. Nat., X ed., p. 429. 

 [Surinam.] 



35Entom. News, XXVIII, pp. 107 to 11.3, (1917). 



