MASTACIDES. 



95 



108. Mastacides pterolepis, Burr. 



Mastacides jyterolepis, Burr, Ann. Soc. Espafi. xxviii, 1889, pp. 89, 

 111, 112 ; Bolivar, Ann. Soc. Ent. France, Ixx, 1902, p. 588, 

 pi. ix, fig. 28. 



Greenish, front yellow. Fastigium of the vertex scarcely raised 

 above the eyes, with the margins scarcely thickened ; eyes very 

 prominent. Tegmina very short, like yellow scales, only extend- 

 ing to the hind border of the mesonotum. Last dorsal segment 

 oi the abdomen in the male broadly and semicircularly sinuated, 

 with the lateral angles sharply produced, and the median sinns 

 bidentate. Supra-anal lamina broadly longitudinally carinated in 

 the middle, and lanceolate in the female. Subgenital lamina 

 large, obtusely triangular in the middle behind, and in the female 

 deeply excised. 



Lewjtli 13-14 mm. ; pronotum, 2 mm. ; hind femur, 9-11 mm. 



Madras : Madura, Ivodaikanal. 



Tifpe in the collection of Dr. Bolivar. 



109. Mastacides vaginalis, Sauss. 



Ifastacides vaginalis, Saussure, Rev. Suisse Zool. xi, 1903, p. 87. 



Green or yellow. Costal ridge sulcated, bioarinate, with the 

 summit somewhat broader, and bipupillate. Tegmina squami- 

 form, very narrow, lateral, hardly passing the mesonotum. Front 

 legs slender, tibiae spined beneath ; tibijB and tarsi yellow (some- 

 times rosy in dried specimens) with black-tipped spines : the hind 

 femora sometimes brown and black on the outer surface ; the 

 first tarsal joint rufescent, finely sulcated. The eighth dorsal seg- 

 ment of the abdomen wholly visible, obtuse- angularly incised, 

 with the lateral angles rectangular, or rounded off. Supra-anal 

 lamina long, ovate-lanceolate, blunt at the tip. Genital valves 

 long, very slender, styliform, hardly sulcated, nearly straight, 

 with the margins entire, blunt above at the tip, with a very small 

 hook beneath. 



Length 14 mm. ; tegmina, 1-5 mm. ; hind femur, 10 mm. 



Madras : Kodikam Hills. 



Type in the collection of the late Capt. Finot. 



Subfamily III. TRYXALIN.E. 



Key to the Genera. 



ri (6) Head conically ascending. Fastigium 

 broad, laminate and truncate at 

 extremity. i , rJ^I.^^C^'- ■ 



2 (5) Eyes near the apex. 



3 (4) Sexes similar ; front margin of teg- 



mina opaque, densely reticulated. Aceida, L., p. 97, 



