1922] NATURAL SCIENCES OF PHILADELPHIA 135 



external and caudal external lobes very small. Ventral femoral 

 margins armed with minute spines, as follows. Cephalic internal 

 4 and 4, cephalic external 4 and 6, median internal 0, median 

 external 6 and 7, caudal internal and 1, caudal external 8 and 8. 

 Supra-anal plate very small, triangularly convex, deflexed between 

 the cereal bases. Cercus with base small, stout conical, its apex 

 produced inward in a sharp, slender blade nearly twice the length 

 of the shaft, directed at right-angles to the shaft; this blade is 

 longitudinally tri-lamellate and curves evenly and weakly to its 

 sharp apex. Subgenital plate strongly narrowing at base, the 

 distal portion very deeply and narrowly cleft and extending caudad 

 of the cerci; the fingers thus formed stout, with external surface 

 moderately supplied with short hairs and internal surface very 

 thickly supplied with very short, erect hairs. 



General coloration of tegmina and exposed portions of wings 

 light green (in life probably including body and limbs), faded to 

 yellowish brown over greater part of other portions. Head with 

 vertex pinkish and two postocular suffusions of pinkish brown on 

 each side. Antennae beautifully annulate, each of these annuli 

 first briefly blackish brown, then fading over a considerable space 

 to pinkish brown, terminated by a brief buffy area; these annuli 

 become more elongate distad in strongly increasing ratio. Teg- 

 mina green, stridulating field pinkish brown, caudad of it a paler 

 area and the pinkish brown narrowing beyond along the sutural 

 margin and disappearing mesad; intervals between veins minutely 

 flecked with brown, these flecks clustering to form distinct small 

 patches at considerable intervals mesad between the veins. Ce- 

 phalic femora and proximal portions of cephalic tibiae heavily 

 suffused and dotted with brown, distal portions of cephalic limbs 

 darkened. Median and caudal limbs with many minute dots of 

 brown, the tibiae with a dark proximal fleck externally, caudal 

 tibiae in large portion and caudal tarsi very dark. 



Length of body 20, length of pronotum 4.8, least width of pro- 

 notum 2.2, greatest (caudal) width of pronotum 3.2, length of 

 pronotal lateral lobe 3.8, depth of pronotal lateral lobe 3.9, 

 length of tegmen 31.2, greatest width of tegmen 7.8, least width 

 (near apex) of tegmen 7, length of cephalic femur 7.3, length of 

 caudal femur 26.7 mm. 



The type is unique. 



Letana brunneri (Krausze) 



1904. Pyrrhizia brunneri Krausze, Insekten Borse, XXI, p. 29. [ 9 ; 

 Than-Moi, Tonkin.] 



Phuc-Son, Annam, (from H. Fruhstorfer), 1 9 . 



This specimen agrees closely with the original description except 

 that the pronotal disk is not only punctate with a dull pink, but is 

 also medio-longitudinally suffused with the same color, while the 

 pronotal length does not equal the tegminal width. The femora 



