110 



Journal New York Entomological Society. 



[Vol. XXIIl. 



Porto Velho, Rio Madeira, Brazil (Mann and Baker), i ^ [A. N. 

 S. P.] (macr.). 



Contamano, Rio Ucayali, Peru, X to XI, 1912, 3 $, 3 juv. 5 [A. N. 

 S. P.] (i micr., V. 1. teg.), alcoholic. 



Chanchamayo, Peru, i $ [A. N. S. P.] (macr.). 



Carcarana, Santa Fe, Argentina, i J', i $ [A. N. S. P.] (macr.). 



Miogryllus ensifer (Scudder). 



1896. Nemobius ensifer Scudder, Jour. N. Y. Ent. Soc, IV, p. loi. 

 [Central America.] (Macropterous $.) 



This species shows near relationship to AI. convolutus, differing in 

 the average larger size, normal chestnut general coloration, longer 

 and wholly pale maxillary palpi with apex of distal segment less 

 strongly truncate (this occupying but distal third of ventral margin), 

 head vi^ith longitudinal lines when present only faintly indicated on 

 occiput and the lateral pair never continued beyond this point, lat- 

 eral lobes of pronotum which often show traces of a dark stripe 

 dorsad, wings always distinctly tinged with chestnut, caudal femora 

 which are not distinctively marked and ovipositor which averages de- 

 cidedly longer. 



The two species agree in the armament of the caudal tibiae and 

 in the form of the male titillatores. The other species of the genus 

 are larger, heavier forms, with caudal femora l^earing an average of 

 five spines on the dorsal margins, instead of the average of four 

 found in convolutus and ensifer. 



Measurements (in Millimeters) of Extremes. 



The extremes of body length are: males, 11-12.1, females 11.1-14 

 mm. Though the series before us is not large enough for definite 

 conclusions, it would appear that the present species is by no means 

 as variable as convolutus. 



