PHASMIDiE. PIIYLLIUM. 



171 



tima iindato-fusciata ; alarum area postica hyalina, pallide 

 fusca, fasciis interruptis subalbidis ; pedibus gracilioribus, 

 uigro fasciatis ; tarsorum anticorum articulo l mo elongato, 

 vix dilatato ; abdomine laevi, segtnentis margine integris, 

 segmentis tribus ultimis ventralibus in operculum conicum 

 vix apicem abdominis attingente dilatatis. 



Foem. Multo major et robustior, luteo-brunnea, viridi 

 tincta ; tegminibus alisque rudimcntalibus pallide viridibus ; 

 abdominis segmentis (prsesertim 4° et 5°) supra laminis 

 binis spiculiferis in medio armatis, margiuibus lateralibus 

 denticulatis ; pedibus membranaceo-dilatatis, margiuibus 

 serratis et spinosis, tarsorum anticorum articulo l mo brcvi, 

 dilatato, erecto. 



Long. corp. maris, unc. 3, lin. 10 ; cap. lin. 2 ; anten. 

 — ? ; proth. lin. 2 ; mesoth. lin. 5 ; metath. lin. 8-J- ; 

 abdom. lin. 24 + lin. 4 = lin. 28 ; tegm. lin. 8 ; alar, ex- 

 pans. 5" 6'". 



Long. corp. foem. circ. unc. 5^ ; cap. lin. 4 ; proth. 

 lin. 4 ; mesoth. lin. 8 ; metath. lin. 10 ; abdom. lin. 30 + 

 lin. 9 = lin. 39 ; tegm. lin. 7 ; alse, lin. 7. 



5 Var. a, e Nova Guinea. 



" Thoracis et abdominis spinis mediis ternis vel quaternis, 

 abdominis articulo 4°, 5°, 6° latere lobo dilatato aucto, 

 lobis conjunctis formam ovatam describentibus ; abdomine 

 infra parcius spinoso ; vagina incurvata, medio carinata et 

 lobo foliaceo aucta, femoribus et tibiis posticis parte supe- 

 riore lobo valde arcuato auctis ; tibiarum mediarum posti- 

 carumque lobis inferioribus intus nigro marmoratis et fas- 

 ciatis." — Be Ilaan. 



Long. corp. 6" ; proth. 4'"; mesoth. 8'"; alee, 4\. 



2 Var. ft, e Terra Van Diemcnii. Long. 4" 10'". 



"Thoracis et abdominis spinis mediis simplicibus cre- 

 brioribus ; abdomine infra spinosissimo, articulo 4°, 5° et 

 6° lobo angustiore breviore acuto spinoso aucto; vagina sub- 

 carinata ; femoribus posterioribus lobo breviore vix arcuato 

 vix armato ; tibiis lobo medio sinuato auctis." — Be Ilaan. 



Male. Extatosoma Hopei, G. It. Gray, Ent. Austral, i. pi. 8. 

 f. 1 ; Syn. Pkasm. p. 29 (Eetatosoma H.). 

 Serville, H. N. Orth. p. 285. 

 Fern. Phasma tiaratum, MacLeay in King's Survey of 

 Australia, App. ii. 455. t. B. f. 3, 4, fern. 



G. Ii. Gray, Ent. Austral, i. pi. 8. f. 2 ; Syn. Phasm. 



p. 29 (Extatos. t.). 

 Serville, H. N. Orth. p. 286. 

 Male and fern. Eetatosoma tiaratum, Burm. Handb.d. Ent. 

 ii. 2. 576. 



BeHaan, Orth. Orient, p. 110. pi. 10. f. 2 (fem.). 



Hah. In Australia ; Paramatta (Gray). Terra Van 

 Diemenii et Nova Guinea (Be Haan). In Mus. Hopeiano 

 Oxoniae (mas, cum larva, pupa, et imag. fcem.) et B.M. 



I consider that Burmeister and De Ilaan are fully justi- 



fied in regarding the E. Hopei as the male of E. tiaratum. 

 The former of these names, according to the ordinary rule 

 of retaining that given to the male, would have been adopted 

 if Mr. MacLeay's name had not the priority, and were 

 equally applicable to both sexes. The specimen figured by 

 Gray as a male pupa is an immature female, and is pre- 

 served in the Hopeian Museum. The curved black horny 

 appendage at the extremity of the body appears to me to 

 be a mass of excrement emitted by the insect. 



Genus 39. PHYLLIUM. 



Phyllium, Illiger, Latreille, Serville, Gray, Burmeister, Be 



Haan, $*c. 

 Pteropus, Thunberg, Mem. Acad. St. Pitersb. v. 1815, 



p. 286. 



Body dilated ; the abdomen with the sides flattened and 

 membranous, the ovipositor of the female not extending be- 

 yond its extremity. Head of the male with three ocelli ; 

 of the female without ocelli. Antennae of the male long, 

 pilose; of the female shorter than the head, 9-jointed. 

 Mesothorax very short, with the sides dilated and spined. 

 Tegmina of the male rather longer than the metathorax ; 

 of the female very large and foliaceous, nearly covering the 

 abdomen. Wings of the male large, extending nearly to 

 the extremity of the abdomen, semioval, of delicate texture ; 

 costal arch distinct and broad, but not coriaceous ; wings 

 of the female rudimental, or much shorter than the teg- 

 mina. Legs short ; the femora, and often the tibiae, with 

 broad membranous lobes. 



These insects recede so much further from the ordinary 

 type of the family than any of the other species, that they 

 have received the common name of Walking-leaves, whilst 

 that of Walking-sticks is given to the more ordinary form. 

 The former of these names is indeed very applicable, for 

 both whilst alive and seated among the leaves of the trees 

 on which they live, and also when dead and faded in colour, 

 it is impossible to conceive a more exact representation of a 

 growing or withered leaf. Indeed, Mr. Murray informs 

 us, that it was only on pointing out the living specimen 

 reared at Edinburgh, whilst resting quietly on the plant on 

 which it subsisted, that many of the visitors were able to 

 perceive it. 



I have represented at the foot of Plate XXXI. several 

 specimens, illustrating the transformations of this genus. 

 Fig. 4 represents a young larva of a species allied to Ph. 

 crurifolium and Scythe (Ph. Agathyrsus ?) . Fig. 5 repre- 

 sents a female larva with slightly developed rudiments of 

 the wing-covers, and with one of the hind legs of diminished 

 size, having probably been reproduced at an earlier period 



z 2 



