PHASMIDiE. HETEROPTERYX. 



83 



mesothorax of the male is conical ; of the female consider- 

 ably wider at the base than the hind part of the prothorax, 

 and gradually widened backwards. The metathorax has 

 the sides much swollen and rounded, and strongly spiued 

 on the margin, with a very strong spine on each side oppo- 

 site the middle of the tegmina. The abdomen of the male 

 is subcylindrical, gradually narrowed to the fifth segment, 

 the edges spiued as well as the upper surface, a pair of 

 spines in the middle of the disc of each being the largest. 

 The female has the abdomen broad, subdepressed, nar- 

 rowed from the fifth segment, the lateral margins finely 

 spined, the upper surface armed with very minute spines, 

 the three terminal segments spineless, the ninth carinated, 

 and furnished at the tip with an oblong joint-like append- 

 age with four small teeth on each side ; the three terminal 

 ventral segments in the male are much swollen. The 

 operculum of the female extends to the extremity of the 

 anal appendage. The tegmina are oval, the extremity 

 being more pointed, the base with a strong pale carina' 

 extending one-third of their length : the wings extend to 

 the base of the abdomen. The legs of the male are mo- 

 derately long ; those of the female shorter and more robust, 

 strongly spined throughout, the spines of the inner edge 

 of the hind tibiae very strong and curved. The mesoster- 

 num is armed with three small spines on each side, and the 

 metasternum with two ; the basal segments of the abdo- 

 men with four longitudinal rows of spines ; the coxa; of 

 all the legs are also strongly spined. 



The species is named in honour of G. R. Gray, Esq., 

 whose writings upon the family have so greatly contributed 

 to our knowledge of the species. 



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

 meso- and metasterna and basal segment of the abdomen of 

 the male. 2 b. The terminal segments of the abdomen 

 seen sideways. 



Fig. 3. The female, of the natural size. 3 o. The terminal seg- 

 ments of the abdomen seen sideways. 



4. (214.) Heteropteryx De Haanii, Westw. 

 Plate III. fig. 7. 



Piceo-nigricans, castaneo parum tincta, opaca, spino- 

 sissima, spinis apice fulvis ; capite spinis 8 majoribus ; 

 prothorace antice 4, postice 2, mesonoto antice 6, in medio 

 2, postice 4, hujus et metathoracis lateribus valde spinosis, 

 his inflatis ; tegminibus ovalibus, longitudine metathoracis et 

 alas tegentibus ; abdomine obconico, segmentis 6 basalibus 

 dorso et lateribus spinulosis, 9no emarginato, lobum mag- 

 num dorsale apice spinoso instructo (fcem.). 



Long. corp. unc. 4 ; cap. lin. 4£ ; anten. lin. 27 ; proth. 



lin. 5 ; mesoth. lin. 8 ; metath. lin. 8 ; abdom. lin. 14 + 

 lin. 7+app. lin. 3=lin. 24. 



Hab. Borneo. B.M. 



Pitchy black, opake, with a chestnut tinge ; strongly 

 spined on the head, thorax and legs ; the abdomen with 

 smaller spines, the spines tipped with dark fulvous. Head 

 nearly square, with two small spines between the eyes, and 

 eight larger on the hind part in pairs. Antennae 26-jointed, 

 the basal joint of moderate size, the last joint rather longer 

 than the two ' preceding together. Prothorax wider than 

 the head, widest behind, divided into two parts by a trans- 

 verse impression ; the anterior part with four strong spines, 

 the posterior with two. The metathorax is gradually di- 

 lated ; its dorsal portion is raised and narrowed behind to 

 the base of the tegmina, it is rugose, with a transverse row 

 of six strong spines in front, two wide apart in the middle 

 and two close together behind, and two smaller ones close 

 to the origin of the tegmina ; the lateral deflexed part is 

 armed with numerous strong spines. The tegmina are oval, 

 extending rather beyond the hind part of the metathorax, 

 and entirely covering the short wings ; the sides of the 

 metathorax are swollen and strongly spined. The abdo- 

 men is nearly as broad as the metathorax in front, and gra- 

 dually narrowed to the extremity ; the six basal segments 

 are armed with small spines in the middle of the upper 

 surface as well as along their lateral margins ; the ninth 

 segment is carinated down the middle, emarginate behind, 

 terminated by an oblong carinated appendage notched at 

 its sides and apex. The operculum is swollen, and extends 

 beyoud the end of the ninth segment, but not beyond the 

 exposed anal lobe. The legs are of moderate length, the 

 anterior femora not curved at the base ; all the femora an- 

 gulated, and strongly spined along each angle ; the tibiae are 

 strongly serrated, the hind ones with incurved spines on the 

 inner edge. 



The body beneath is opake ; the mesostemum on each 

 side with a row of three short spines, and two more in the 

 middle behind ; the metasternum has two spines on each 

 side, two in the middle, and two in the middle of the hind 

 margin, which extends backwards between the hind legs ; 

 the three basal abdominal segments are also furnished with 

 two spines on each side near the middle. 



Dedicated to the memory of De Haan, one of the most 

 profound of modern entomologists. 



Plate III. Fig. 7- The female, of the natural size. la. The 

 four terminal segments of the abdomen seen laterally. 



M 2 



