PHASMID.i:. XERODERUS. 



103 



nigfis ; alis fiiscis, basi sensini purpurascenti-coccineo 

 tiiictis, segmentis abdomiualibus lateraliter acute lobatis 

 (mas et foem.). 



Long. Corp. maris, mic. 2f ; cap. liii. 2 ; proth. liii. li ; 

 mesoth. lin. 4; metath. liu. 5i ; abdom. lin. l(ii + liii.4 = 

 Hii. 20i ; tegm. lin. 5 ; alse, lin. 22 ; expans. lin. 47. 



Long. Corp. foem. unc. 4 ; cap. lin. 3 ; proth. lin. 2| ; 

 mesoth. liu. 6 ; metath. lin. 8 ; abdom. liu. 21 + liu. 8 = 

 lin. 29 ; tegm. liu. 8i ; alse, liu. 30 ; expans. liu. fi4. 



Xeroderus Kirbii, G. R. Gray, Syn. Phasm. p. 32. 

 Burmeister, Handb. d. Ent. ii. 2. p. 582. 

 Hah. In Australia. In Mus. Hopeiauo Oxoniaj. 



The accompanying figures are taken from the two typical 

 specimens (male and female) in the Hopeian Collection. 

 The head is furnished with two pairs of tubercles close to 

 the hind margin. The ocelli are large in both sexes. The 

 anteuuEe of the male are setose, with the joints long, the 

 basal joint narrow (the extremity is broken off). The pro- 

 notum is flat, and widened behind, with the latei-al margins 

 slightly elevated. The mesonotum has a raised, somewhat 

 heart-shaped space, armed with short lateral spines, as well 

 as with several on the disc ; there is also a curved row of 

 short spines on each side, running from the anterior lateral 

 angles to the base of the tegmina, and the extreme lateral 

 margins are also spined. The tegmina in both sexes are oval, 

 with a very slight angulated elevation iu the middle. The 

 wings are large ; the costal area pale ashy buff, irregularly 

 varied with brown, the chief vein furcate ; the membranous 

 area piuk, gradually shaded off to brown, the longitudinal 

 veins strong and dark brown. The abdominal segments are 

 furnished on each side with thin membranous lobes, acute 

 at the hind angle, very much smaller iu the male than in 

 the female ; the former has the terminal dorsal segment of 

 the abdomen elevated in the centre, whence it is furcate to 

 the extremity ; the anal styles are long and obtuse ; the 

 operculum of the female is simple, and extends to the ex- 

 tremity of the abdomen. The legs are rather short iu both 

 sexes, with the femora serrated externally in the female. 



Plate XXXI. Fig. 6. The male, of the natural size (with the 

 extremity of the legs and wings omitted). 6 a. The e.xtre- 

 inity of the abdomen seen sideways. 



Fig. 7. The female, of the natural size. 7 a. The extremity of 

 the body seen sideways. 



2. (2C3.) Xeroderus ? MarchaU. 



Plate XXXVI. fig. 4. 



Luteo-virescens ; capite et abdomiue sublsevibus ; thorace 



subrugoso, capite postice lineis 6 longitudinalibus notato ; 



prothorace tuberculis 4 minutis quadrangulum auticum 



[ formantibus ; mesothorace in medio versus marginem an- 

 ticum bituberculato, lateribus submembranaceis, spinis non- 

 nulhs fortibus curvatis pubcsccntibus armatis ; tegminibus 

 ovalibus (long. liu. 3), opacis, antice obscure virescentibus, 

 postice cinereis ; alis abdomine brevioribus, hyalinis, roseo 

 parum tinctis ; venis transversis albidis, costa opaca obscure 

 virescenti, plaga elongata basali subrosea ; al)domine sub- 

 liueari ; antennis et pedibus concoloribus, extus brunneo 

 viridique subfasciatis ; femoribus omnibus membrana au- 

 gusta et valde dentata instructis, dentibus pubescentibus et 

 curvatis, femoribus supra dentibus parum minoribus ar- 

 matis ; tibiis 4 posticis spinosis, anticis 2 fore inerraibus ; 

 abdomine depresso, lateribus parallelis, simplicibus. 



Long. Corp. lin. 22 ; cap. lin. 2 ; anten. lin. 1 1 ; proth. 

 liu. 2 ; mesoth. lin. 3i ; metath. hn. 4 ; abdom. hn. %\-\- 

 lin. 2 = lin. U)i ; tegm. lin. 2i ; alar, expans. lin. 20. 



Prisopus Marchali, Serville, II. N. Orth. p. 284. 

 Xeroderus Marchali, Be Hann, Orth. Orient, pp. 1 12, 11 G. 



Hab. In " He de France." Typus in Mus. Ilopeiano 

 Oxonise. 



The simple structure of the abdominal segments of the 

 unique male of this species, preserved in the Hojieiau 

 Museum, separates it from the gen\iiue species of Prisojnis, 

 with which it agrees iu the membranous and serrated ap- 

 pendage of the legs. I do not doubt, when the female 

 comes to be known, that it will be necessary to form a 

 separate genus for its reception, it being here placed pro- 

 visionally iu that of Xeroderus. 



Plate XXXVI. Fig. 4. The male, of the natural size. 



3. (264.) Xeroderus ? manicatus. 



Linearis, fuscus ; antennis longitudine corporis ; elytris 

 brevissimis, basi denticulo parvo elevato ; alis longis, rotun- 

 datis, fuscis ; femoribus anticis membranaceis. 



Long. Corp. ? 



Mantis linearis, Fabricius, Ent. Syst. ii. p. Ij. no 14 ■ 

 Ent. Syst. Sujjpl. p. 189 (Phasma 1.). 



Olivier, Enc. MHh. vii. (i24 (Mantis 1.), (nee Phasma 

 linearis, Drtiry). 

 Phasma niauicatum, Lichtenstein, Linn. Trans, vi. 17. 

 G. R. Gray, Syn. Phasm. p. 28 (Prisojius man.). 

 Phasma (Xeroderus) lineare, De Haan, Orthupt. Orient 

 pp.112, 110. 



Hab. In India orientali. 



Genus 25. XEROSOMA. 

 Xerosoma, Serville, G. R. Gray. 



Body subdepressed, rather broad, rugose, winged. Head 

 of moderate size, subquadrate ; eyes small. Ocelli 0. An- 



