156 



CATALOGUE OF ORTHOPTEROUS INSECTS. 



valde elevato et rotundato ; alis magrris, fumosis, transverse 

 valde reticulatis, area costali fusco-lutea, seriebus quinque 

 longitudinalibus macularum parvarum nigrarum notata ; 

 pedibus brevibus, femoribus anticis rectis (foem.). 



Long. corp. foem. unc. 2^; cap. lin. 2; anten. — ?; 

 proth. lin. 2 ; mesoth. lin. 3j ; metath. lin. 5£ ; abdom. 

 lin. 14 + lin. 3 = lin. 17; tegm. lin. 2£ ; alar, expans. unc. 4. 



Hub. Mount Ophir and Borneo, Sarawak (D. Wallace) ; 

 Pulo Penang. In Mus. \V. W. Saunders et Westermann. 



This very remarkable species is well distinguished by its 

 straight anterior femora, its short square spotted tegmina, 

 and its large multivenose wings with the pale brown costal 

 area spotted with black. The head of the female is mo- 

 derately large, rather convex, with three slender dark lines 

 on the hind part of the crown. The antennae are slender ; 

 but the tips in the unique female which I have seen are 

 broken off. The prothorax has its anterior lateral angles 

 truncated and incised ; its slender hind margin is bright 

 scarlet. The mesothorax is not more than one and a half 

 times the length of the prothorax ; it is slender in front, 

 two-thirds of its hinder portion being widened, its disc gra- 

 nulose, and the anterior portion of the dilated part with 

 two large rounded tubercles. The tegmina are short, sub- 

 quadrate, brown, each with about six small black spots ; 

 the tubercle of the carina is very prominently elevated and 

 obtuse. The wings are very large, pale smoky-coloured, the 

 membranous portion very thickly and transversely veined ; 

 the costal area is fulvous brown, the second vein furcate, 

 each of the longitudinal veins bearing a series of small 

 round black spots. The abdomen is rather wide ; the two 

 terminal segments small, the last entire ; the caudal styles 

 rather short and obtuse. The operculum extends nearly 

 to the extremity of the body ; its tip is emarginate ; the 

 sixth ventral segment is entire along its hind margin. The 

 legs are short, rather robust, and unarmed ; the anterior 

 femora are straight, being in nowise emarginate at the base ; 

 the basal joint of the tarsi is about as long as the three 

 following joints united. 



Plate XVII. Fig. 6. The female, of the natural size. 6 a. 

 The terminal segments of the abdomen seen sideways. 



The insect which I consider to be the male of this spe- 

 cies is contained in the Collection of Mr. Westermann of 

 Copenhagen, and is represented in PL XXXV. fig. 5. It 

 is of an obscure luteo-fulvous colour ; the mesothorax with 

 a green fascia in front ; the tegmina and costal area of the 

 wings marked with numerous small round greenish-black 

 dots ; the membranous portion nearly pellucid, and scarcely 

 tinged with brown ; the veins very slender, but distinct ; 



the median vein of the costal area is simple, but it is united 

 with the next at a short distance from the tip of the wing ; 

 the antennae are slightly annulated with whitish. 



Plate XXXV. Fig. 5. The male, of the natural size. 5 a. 

 The terminal segments of the body seen sideways. 



A variety of the male of this species has been sent from 

 Sarawak by Mr. Wallace. It is represented in PL XXXV. 

 fig. 4, and is slender and of a fulvous-brown colour ; the 

 head very convex ; eyes very prominent ; antennae very 

 long and slender, brown, not annulated with white, the 

 base luteous ; the pro- and mesothorax granulated, the 

 latter twice the length of the former, with two-thirds of 

 its hind portion elevated, the anterior part of the elevated 

 portion slightly bituberculated. The membrane connect- 

 ing the head and prothorax and the pro- and mesothorax 

 is bright scarlet ; the mesothorax is also distinguished 

 by a narrow green margin in front. The tegmina are 

 nearly square, strongly carinated, reddish brown, with the 

 veins slender and pale fulvous, forming reticulations. The 

 wings are uniform smoky brown ; the costal area fulvous 

 brown, with the transverse veins slender, placed very regu- 

 larly at short equal distances apart, and pale luteous ; the 

 median vein simple. The abdomen is brown ; the extre- 

 mity much swollen beneath, paler luteous. The fore legs 

 are wanting in the only specimen I have seen ; the middle 

 and hind ones slender, sanguineous, with the articulation 

 between the femora and tibiae pale buff. Its proportions 

 are as follows : — 



Long. corp. lin. 20 ; cap. lin. 1^- ; anten. lin. 21 ; proth. 

 lin. 1^; mesoth. lin. 2-i- ; metath. lin. 3^; abdom. lin. 8£ 

 -flin. 2=lin. 10-j; tegm. lin. 1-|; alar, expans, unc. 2£. 



A female, also sent from Sarawak in Borneo by Mr. Wal- 

 lace, which I presume to be a variety of this species, is 

 more brunneous, without any tinge of green. The meso- 

 thorax shorter and broader, with the entire disc and an- 

 terior angles more elevated and rugose. The tegmina also 

 broader, brown, with all the veins not quite so pale, but 

 destitute of black dots. The wings rather pink at base ; 

 the costal area without black dots ; the membranous por- 

 tion richer brown, with the transverse veins not so strongly 

 marked. The legs red-brown, with the femora green at 

 the tips. The prothorax with the hind margin scarlet. 



The length of the insect is 2^ inches, and the expanse 

 of the wings 4 J. 



Plate XXXV. Fig. 4. The variety of the male, of the na- 

 tural size. 4 a. The terminal segments of the abdomen 

 seen sideways. 



