PIIASMID,£. necroscia. 



145 



44. (377.) Necroscia Iolas, Westw. 

 Plate XIX. fig. 2, male. 



Gracillima, elongata, lsevis, fusca, viridi tincta ; meso- 

 thorace vix granulato et valde elongato ; capite subqua- 

 drato, postice haud elevato ; tegminibus parvis, ovalibus, 

 ante medium vix angulatis ; alis paulo infumatis, area cos- 

 tali fusca viridi tiucta, vena 2 nd * simplici, albo maculata ; 

 pedibus longis, gracilibus, femoribus omnibus ante apicem 

 subtus spiuula parva armatis, abdominis segmento ultimo 

 lateribus incurvis spinulisque intus armatis (mas). 



Long. corp. unc. 2f ; cap. lin. \\ ; anten. unc. 2J; proth. 

 lin. \\; mesoth. lin. 7f ; metath. lin. 7; abdom. lin. 15 

 + lin. 4 =lin. 19 ; tegm. lin. 3 ; alar, expans. unc. 2f. 



Hab. In Malacca (D. Wallace). In Mus. W. W. Saun- 

 ders. 



I have only seen a single male of this species, which is 

 well distinguished by its very long and slender mesothorax 

 and its obscure greenish-brown colour. The head is sub- 

 quadrate, the hinder part not at all elevated. The eyes 

 rather small, but very prominent. The antennae long, 

 slender, and blackish. The mesothorax finely granulated 

 above, about four times the length of the prothorax. The 

 tegmina obscure greenish, small, oval, scarcely carinated, 

 and but slightly angulated towards the base. The wings 

 are scarcely stained with brown ; the costal area is greenish 

 brown, paler green along the inner margin ; the veins dark, 

 the principal ones varied with minute whitish spots ; the 

 second vein is not furcate. The abdomen is very long and 

 slender ; the terminal segments rather widened, but not 

 swollen, the last with the edges deflexcd at the tip, and 

 armed with minute teeth on the inside ; the anal styles are 

 thickened, and obtuse at the tips ; the terminal ventral 

 segments have, I believe, been injured in the unique male 

 which I have seen. The legs are long and slender ; the 

 middle ones considerably the shortest, simple, except that 

 all the femora are armed on the under side near the tip 

 with a small spine ; the basal joint of the tarsi is about as 

 long as the succeeding joints united. 



Plate XIX. Fig. 2. The male, of the natural size. 2 a. The 

 terminal segments of the abdomen seen sideways. 2 6. The 

 last segment seen from behind. 



45. (3/8.) Necroscia Ismene, Westw. 

 Plate XL. fig. 2, male ; fig. 3, female. 

 Elongata, gracilis ; capite convexo ; antennis valde elon- 

 gates, nigris, 3-annulatis, annulo ultimo subapicali; brun- 

 neo-fusca, pro- et mesonotis minute granulatis ; capite et 

 pedibus Isete fulvis ; tegminibus fascia lata integra basali 



flava, carina mediana acuta et angulata ; alis pallide fuscis, 

 albo transverse valde reticulatis, basi et apice late fuscis, 

 area costali brunneo-fusca pallida, area postica vix obscu- 

 riori, venis vix distinctis (mas et fcem.). 



Long. corp. maris, unc. 1 f ; cap. lin. If ; anten. unc. 2| ; 

 proth. lin. 1|; mesoth. lin. 4£ ; metath. lin. 4 ; abdom. 

 lin. 13 + lin. 2 = lin. 15 ; tegm. lin. 2 ; alar, expans. fere 

 unc. 3. 



Long. corp. fcem. unc. 3, lin. 1 ; cap. lin. 3; proth. lin. 2; 

 mesoth. lin. C ; metath. lin. 5^-; abdom. lin. 18+lin. 3 = 

 lin. 21 ; tegm. lin. 3 ; alar, expans. unc. 4, lin. 2. 



Hab. Borneo. In Mus. D. Westermauni Havnue. 



This handsome species is closely allied to N. Marmessus, 

 Westw., but is at once distinguished by its more sombre 

 colours, reticulated wings, basal fascia of the tegmina, &c. 

 The female also bears a considerable resemblance in general 

 form to the female of that species, figured in PI. XIX. fig. 1 . 

 The general colour is reddish brown. The male has the 

 head rather large and convex, of a bright orange colour. 

 The eyes large and prominent. The antennae very long 

 and slender, blackish, with three white annuli, the third 

 being close to the tip. The pro- and mesothorax have the 

 upper surface finely granulated ; the latter is rather widened 

 in its hind part. The tegmina are rather broad, sub- 

 quadrate ; the carina strongly marked, acute along its ridge, 

 and elevated between the middle and base into a conical 

 lobe rounded at its top ; the base of the tegmina is occu- 

 pied by a broad entire yellow fascia. The wings are large, 

 pale brown, with the base and apex uniform brown, the 

 middle portion occupied with numerous slender white trans- 

 verse reticulations ; the costal area is pale reddish brown, 

 scarcely darker than the posterior area, and with the veins 

 scarcely distinct ; the median one simple. The abdomen 

 is long and slender ; the apical segments short and simple ; 

 the anal styles produced into a pair of small curved forci- 

 pated appendages, setose, incurved, and thickened at the 

 tips. The terminal ventral segments are short and consi- 

 derably swollen. The legs are very slender and simple, and 

 of an orange colour. 



The female agrees with the male in general colours, but 

 has the body more robust and the legs shorter ; the me- 

 dian vein of the costal area is furcate at about 7\ lines from 

 the base ; and the operculum is acutely boat-shaped, and 

 extends to the extremity of the abdomen. 



Plate XL. Fig. 2. The male, of the natural size. 2 a. The 

 terminal segments of the body seen sideways. 



Fig. 3. The female, of the natural size, seen sideways, with the 

 bases only of the limbs exhibited. 



