222 AN ASIATIC SPECIES OF ATLANTICUS (oRTHOPTERA) 



rounded obtuse, ventral margin oblique subtruncate, ventro-caudal angle 

 broadly rounded rectangulate, forming the point of greatest depth, caudal 

 margin strongly sinuate oblique, the humeral sinus evident: surface of lobes 

 undulate, weakly impressed in the regions of the transverse sulci, the portion 

 dorsad of the humeral sinuses impressed, vertical. Tegmina lateral, nearly 

 contiguous mesad, largely hidden under the pronotum, normally visible 

 distad of the caudo-lateral portion of the disk and caudal section of the lateral 

 lobes as rather narrow rounded pads, projecting distad of the caudal margin 

 of the disk hardly more than the width of the proximal antennal joint; distal 

 extremity of tegmina faintly truncato-arcuate, the Ifteral margin regularly 

 arcuate; surface of tegmina with raised anastomosing venation, in which the 

 major veins are differentiable. 



Abdomen with the faintest possible indication of a medio-longitudinal 

 ridge and no carina on dorsal surface: disto-dorsal abdominal tergite with a 

 pronounced and broad median depression, which is subvertical in position 

 and sulcate mesad; distal margin of same segment arcuate between cereal 

 bases, but with a marked and l)road median emargination, which is obtuse- 

 angulate cephalad and with parallel lateral margins caudad, the caudo-lateral 

 angles sharply rectangulate. Supra-anal plate short, apex slightly more 

 acute than a right angle, surface smooth except for a slight median transverse 

 impression. Cerci about twice as long as exposed portion of supra-anal plate, 

 incrassate in proximal two-thirds, there covered with setiferous papillae, dis- 

 tad sharply tapering to the aciculate apices. Ovipositor about three-fourths 

 as long as the caudal femora, robust, deep, nearly straight, there being the 

 faintest curve in the distal half; proximal fourth relatively inflated, this 

 particularly evident from the dorsum;^ dorsal and ventral margins gradually 

 converging in proximal two-fifths of ovipositor, thence sul)i)arallel to the 

 oblique trunc^ation of the dorsal margin, which is found in the distal eighth; 

 apex ventral, very acute; all margins entire. Subgenital plate broad, moder- 

 ately transverse, the lateral angles sinuate convergent distad, the apex of the 

 distal margin rather deeply V-emarginate, the angles bounding the same 

 laterad subrectangulate. 



Limbs elongate, particularly the caudal pair, rather robust. Cephalic 

 femora ])ut little shorter than the pronotal disk, ventro-cephalic margin with 

 five spines on distal half: cephalic tibiae with foramina rimate, dorso-caudal 

 margin of same with three to four spines, dorso-cephalic margin with no 

 spines. Median femora slightly longer than the cephalic femora, with two 

 to three spines mesad on the ventro-cejjhalic margin. Caudal femora sub- 

 equal to the body (exclusive of ovipositor) in length, the i)roximal two-fifths 

 greatly inflated, the greatest depth contained five and one-half times in the 

 greatest length of the same; distal section of caudal femora slender, sutu'iiual, 

 weakly enlarged in genicular region; pattern of the paginae vcntrad of the 



^ The left dorsal valve is aborted in the type, being not more than a fourth 

 the length of the right dorsal, ])ut this condition has not distorted or exag- 

 gerated any of the characters here given. 



