PHASMIDiE. ACANTIIODERUS. 



5J 



11. (139.) Acanthoderus coronatus. 



Corpore fusco, spinoso ; capite conico, margine utrinque 

 6-spinoso ; prothorace angulis extremis aoutis, serie duplici 

 spinulosa media ; mesothorace medio et lateribus carinato, 

 carina media basi et apice bispinosa, angulis externis spi- 

 nosis, metathorace bis uti et abdominis articulis 7 anterio- 

 ribus medio semel bispinulosis ; lateribus spina simplice ar- 

 matis ; articulo 8vo medio carinato, lateribus dilatato ; fe- 

 moribus et tibiis tetragonis, angulo superiore 4-spinuloso. 



Mas. Corpore lineari, articulo 9° lobis 2 obtusis termi- 

 nate ; vagina versus apicem gibbosa, apice marginata. 



Lat. corp. 2^'" ; long. corp. 2" ; mesoth. 6'" ; metath. 

 4"' ; ped. ant. llf"; ped. med. 9'". 



Foemina. Antennis 5'" longis, 27-articulatis ; corpore la- 

 tiore, spinis mediis brevioribus, articulo 9° lobis duobus 

 acutis terminato ; vagina subrecta, convexa, carina media 

 obtusa. 



Lat. corp. 3^-4^'" ; long. corp. 2"; mesoth. b\"' ; me- 

 tath. 3i'" ; ped. ant. et post. 13'" ; ped. med. 1". 



Phasma (Pachymorpha) coronatum, Be Haan, Orthopt. 

 Orient, p. 137. pi. 14. f. 4 mas, f. 5 fcem. 

 Hab. In Java, Amboina ; Borneo {Wallace). B.M. 



12. (140.) Acanthoderus Bufo, Westw. 

 Plate II. fig. 6. 



Apterus, fuscus, corpore in medio (prsesertim metatho- 

 race) dilatato, granulato et spinoso ; capite postice spinis 4, 

 pronoto 6, duabus iutermediis majoribus ; mesothoracis 

 lateribus spinosis, dorsoque spinis 2 ad marginem anticum, 

 4 aliis ante medium cum duabus majoribus elevatis versus 

 marginem posticum ; metathorace spinis 2 in medio alteris- 

 que 2 approximatis versus marginem posticum ; abdominis 

 segmentibus basalibus spinis duabus distantibus prope 

 basin alterisque 2 approximatis versus marginem posticum ; 

 segmentis posticis tuberculo elevato longitudinali ad mar- 

 ginem posticum ; oviductu elongato, contracto ; pedibus 

 spinosis. 



Long. corp. fern, adult, unc. 4; cap. lin. 4; proth. lin.3j; 

 mesoth. lin. 8; metath. lin. 6; abdom. lin. 16+lin. 6i-f- 

 lob. apic. lin. 3=lin. 25^. 



Phasma (Acanthoderus) Bufo, Westwood, Cab. Orient. Ent. 



p. 77. pi. 38. f. 3. 



Hab. In Insulis Philippinensibus {B. Cuming). Mas. 

 Westwood. B.M. 



I am induced to consider the insect represented in PI. II. 

 f. 6 as a half-grown female rather than a full-grown male of 

 this species. Like the fully-developed female (of which the 

 figure in my ' Oriental Entomology ' gives a representation), 

 the specimen has the exserted style at the extremity of the 



body resembling a tenth joint ; but the operculum does not 

 extend beyond the extremity of the ninth joint, leaving ex- 

 posed at the sides the inner appendages of the organs of 

 generation. The operculum also is not 3-jointed as in the 

 males, although it exhibits two transverse impressions. 

 The specimen is from the Philippine Islands, and is in the 

 British Museum Collection. 



Plate II. Fig. 6. The insect, of the natural size. 6 a. The 

 head, pro-, meso-, and anterior part of the metathorax seen 

 sideways, fi b. The terminal segments of the abdomen 

 seen sideways. 6 c. The same seen from beneath. 



13. (141.) Acanthoderus Mesoplatus, Westw. 



Apterus, fuscus, granulosus et spinosus ; mesothorace 

 postice cum metathorace dilatato ; capite postice spinis 8, 

 lateralibus majoribus ; prothorace spinis 2, mesothorace 8, 

 2 anticis, 2 ante medium, 4 posticis (2 lateralibus) ; meta- 

 thorace spinis 2 magnis pone medium lateribusque ante 

 pedes posticos spinosis ; segmentis basalibus abdominis 

 6-spinosis, spinis 2 anticis majoribus ; segmentis posticis 

 sensim dilatatis, tuberculo longitudinali ad marginem posti- 

 cum instructis ; pedibus spinosis (mas). 



Long. corp. maris unc. 2\ ; cap. lin. 2 ; proth. lin. 2 ; 

 mesoth. lin. 6 ; metath. lin. 4 ; abdom. lin. 9 + lin. 3£= 

 lin. 12i. 



Phasma (Acanthoderus) Mesoplatum, Westw. Cab. Orient. 

 Ent. p. 77. pi. 38. f. 4. 

 Hab. In Insulis Philippinensibus {B. Cuming). B.M. 



14. (142.) Acanthoderus draconinus, Westw. 

 Apterus, fuscus, spinis magnis lateralibus horridus ; cor- 

 pore in medio parum dilatato ; capite supra postice spinis 

 circiter 10 armato, lateralibus majoribus ; prothorace supra 

 utrinque tuberculo piano elevato spinoso armato, meso- 

 thorace etiam supra versus marginem anticum, utrinque 

 tuberculo lato spinoso et dentato, postice convergenti, ar- 

 mato ; prope marginem posticum etiam tuberculo minori 

 e spinis duabus conjunctis armato ; tuberculo simili in 

 medio metathoracis ; segmentis basalibus abdominis utrin- 

 que spina porrecta medioque unica minori armatis ; seg- 

 mentis posticis sensim angustioribus, analibus tuberculatis ; 

 pedibus spinosis. 



Long. corp. maris unc. 1^ ; fcem. 2\ ; hujus cap. lin. 2\ ; 

 anten. lin. 9 ; proth. lin. 2 ; mesoth. lin. 4f ; metath. lin. 4 ; 

 abdom. lin. 9 4- liu. 5=lin. 14. 



Phasma (Pachymorpha) draconinum, Westw. Cab. Orient. 



Ent. p. 78. pi. 38. f. 5. 



Hab. In Insulis Philippinensibus {B. Cuming). Mus. 

 Westwood. B.M. 



h 2 



