Scudder.] 352 [February 24, 



Para, Santarera, Rio, Tajapouru, Manaos, Pernambuco, Hyanuary, 

 Villa Bella, Balaia, Tapajos, Surinam (IVIus. Comp. Zool.) ; Rio (Peab. 

 Acad.); Surinam (my coll.). 



Thunberg makes no mention of a dark outer border to the wings. 



TITANACRIS (Tirlxv, ay.Qis). 



Head small, compressed ; space between eyes less than the shorter 

 diameter of the eye; median frontal ridge as broad as the length of 

 the first joint of the antennse ; breadth of labrum equal to the dis- 

 tance from upper edge of clypeus to the middle of the median fi'ontal 

 ridge, or barely more than the longer diameter of the eye, or as 

 broad as long; latei-al angles of front distinct but slight, divergent. 

 Pronotum tapering considerably, — the difference between the breadth 

 anteriorly and posteriorly, being as 1: 1.32. Angle of posterior bor- 

 der less than a right angle; median crest forming a regular curve 

 from front to hind border, but rather more prominent anteriorly; 

 prosternal thorn stout, straight, rather long, slightly compressed lat- 

 erally, neither pointed nor blunt. Tegmina nearly five and one half 

 times as long as broad, the costal edge broad; secondary veins indis- 

 tinct; internomedian vein furcate; basal branch of extemomedlan 

 vein simple. Wings long and broad, immaculate; cross veins at tip 

 regular, though much more frequent than in other parts of the wing ; 

 area between first and second branches of the anal vein not noticeably 

 broad, broken by cross veins into spaces not more than half as long 

 again as broad ( ? ), or unusually broad and broken by cross veins into 

 spaces three times as long as broad (6); second branch of anal vein 

 regular, sending out from under surface one primary shoot and two 

 secondary ones ; intercalary longitudinal veins of anal area extending 

 fully half way toward the base of the wing. Abdomen comparatively 

 slender ; outer surface of hind femora flat or even hollowed; terminal 

 segment of male not greatly produced, compressed beneath into a 

 sharp carina throughout its length. 



1. T. earinata (StoU') Scudder. 



Gryllus carinatus Stoll', Repr. d. Spectr., etc., Saut. d. Pass., 12, 

 pi. v\ fig. 16. 



Acridium albipes Burm., Handb. d. Entom.,II, 628. 



" " De Haan, Verb. Nat. Gesch. Ned. Bezitt., Zool., 



141, 151. 



Anteriorly the crest of pronotum is quadrilobed, each lobe well 



