PHASMIDiE. PHIBALOSOMA. 



73 



3. (188.) Phibalosoma phyllocephalum. 

 Plate XXXIII. fig. 1 . 



Valde elongatum, cylindricum ; capite antice deflexo, 

 cornubus duobus vcrticalibus niagnis compressis, apice ro- 

 tundato-foliaccis ; mesonoto spinis duabus parvis acutis 

 erectis in medio ; metanoto duabus similibus ante medium 

 alteraque maxima media erecta antrorsum curvata apice 

 nigra, armatis ; abdomine simplici ; pedibus gracilibus, fe- 

 moribus 4 posticis curvatis ; operculo vaginali ultra apicem 

 abdominis longitudine segmentorum 4 posticorum extenso, 

 stylis duobus gracillimis fere ejusdem longitudinis adjectis, 

 stylis ordinariis analibus brevibus gracilibus acutis (foem.). 



Long. corp. cum operc. unc. 9, lin. 8 ; cap. tin. 3 ; an- 

 ten. lin. 22 ; proth. lin. 3 ; mesoth. lin. 20 ; metath. lin. 

 16 ; abdom. unc. 4, lin. 5 + lin. 6 + operc. unc. 1, lin. 3= 

 unc. 6, lin. 2. 



Acanthoderus phyllocephalus, Westw. ante, p. 58. no. 32 



( 16 °)- 

 Bacteria aurita, Burmeister, Handb. d. Ent. n. p. 565 ; 



(nee Acanthoderus auritus, Burm. ; nee Phasma auritum, 



Fabricius). 



Hab. In Brasilia. In Mus. reg. Berol., Westermanniano, 



et Hopeiano Oxoniae. 



Having obtained a specimen of this fine insect for the 

 Hopeian Museum through the kindness of M. Westermann 

 during my visit to Copenhagen in the summer of 1858, I 

 am induced, from its analogy with the females of the two 

 preceding species, to infer that its male must be a winged 

 insect, and that it will here find its proper generic position. 

 The characters above given will serve, in addition to those 

 from Burmeister, copied in page 58, to distinguish it from 

 every other known species of the family. 



Plate XXXIII. Fig. 1. The female, of the natural size. 



4. (189.) Phibalosoma Pythonius, Westw. 

 Plate XXXV. fig. 3, male. Plate XII. fig. 1, female. 



Pallide lutescens ; pedibus virescentibus ; capite et pro- 

 thorace parvis, inermibus ; mesothoracis dorso utrinque serie 

 spinarum (in fcemina minorum), hujus et metanoti mar- 

 ginibus lateralibus breviter nigro spinosis ; abdomine longo ; 

 pedibus longis serratis, antennis vix medium tibiarum anti- 

 carum attingentibus (mas et foem.). 



Mas. Filiformis ; capite ocellis destitute ; mesothorace 

 cylindrico, spinis dorsalibus nigris majoribus, tegminibus 

 vix medium metanoti attingentibus ; alis magnis, area costali 

 pallide lutea, basi virescenti linea flava ; postice maculis 

 minutis fuscis ; area postica hyalina venis longitudinalibus 

 luteis ; abdomine gracillimo, segmentis tribus ultimis ven- 



tralibus abbreviatis vix inflatis, ultimo medium segmenti 8 vi 

 dorsalis attingente. 



Fcem. Multo robustior; abdomine thorace toto dimidio 

 longiori ; subcylindrica ; mesothorace prothorace triplo 

 longiori, ante medium lateraliter inflato ; operculo elongato, 

 apicem abdominis longe superante, appendicibus duabus 

 ensiformibus ejus longitudine instructo. 



Long. corp. maris, unc. 5| ; cap. lin. 3 ; proth. tin. 2\ ; 

 mesoth. lin. 1 \\ ; metath. lin. 8 ; abdom. lin. 31 +lin. 5 = 

 lin. 36. Tegm. tin. 4 ; alse, lin. 29^ ; alar, expans. unc. 4|. 



Long. corp. fern. unc. 9 ; cap. lin. 7; anten. unc. 3£ ; 

 proth. lin. 6 ; mesoth. lin. 18 ; metath. lin. 13 ; abdom. 

 unc. 4 + lin. 9=unc. 4, tin. 9 ; operc. apic. lin. 7£. 



Hab. Feejee Islands (D. Macgillivray). B.M., &c. 



This fine species, which is one of the most striking re- 

 cent acquisitions in the family, was collected by Mr. Mac- 

 gillivray in Ngau, one of the Feejee Islands. 



The male, of which I have only seen a single specimen, 

 quite recently sent home by Mr. Macgillivray, is very long, 

 slender, and cylindrical. The head is destitute of ocelli. The 

 mesothorax long, and slightly dilated at the insertion of the 

 fore legs. It is luteous, with a greenish tinge ; the two 

 rows of dorsal spines are much stronger than in the females, 

 and black ; there are also two rows of minute spines on 

 each side, and two still smaller along the prosternum. The 

 metathorax has a row of very small points along the flank, 

 with a deep double impression near the hind extremity of the 

 metasternum, beyond which is a point on each side. The 

 abdomen is long and filiform ; the three terminal segments 

 small. The tegmina small and truncate, greenish, with the 

 lateral margin yellow. The wings are large; the costal 

 area pale luteous buff, greenish at the base, with a yellow- 

 line, the hind part with a row of small brown dots ; the 

 principal vein is furcate in the left wing ; the hinder area 

 is very pale buff, rather darker at the tip, the veins pale 

 reddish brown. The legs are long, with the femora rather 

 strongly serrated. 



The female has the head small, oval, convex, and desti- 

 tute of spines or tubercles, with a small transverse impres- 

 sion between the eyes. The antennae are long and slender, 

 and consist of about twenty-nine or thirty joints, gradually 

 becoming very long after the eighth joint. The prothorax is 

 small, oblong, the surface irregular, the fore margin excised, 

 the anterior angles truncate, a small deep puncture within 

 each angle. The mesothorax is the widest part of the body, 

 being much dilated before and slightly contracted behind 

 the middle ; the upper surface is entirely smooth, except 

 towards its sides, where it is slightly punctured ; the con- 

 necting lateral membrane with a row of small black spines. 



