PIIASMIDJE. ACROPHYLLA. 



113 



uneven. The mesothorax has its sides nearly straight ; the 

 mesonotum is, however, narrowed behind to the base of the 

 tegmina, which, when closed, do not extend over more than 

 two-thirds of the metanotum ; they are shortly ovate and 

 strongly reticulated, and rather more than half the length 

 of the wings, which, when closed, extend to the middle of 

 the second abdominal segment. The abdomen is long, 

 simple, and subconvex ; the segments gradually narrowed 

 to the extremity and margined at the sides, the anterior 

 ones with two lines of small impressions on each side ; the 

 terminal segment is rounded, exposing the two small styles 

 as well as the extremity of the operculum, which is con- 

 stricted close to the base. The legs are short, strong, and 

 angulated ; the middle ridge of all the femora beneath 

 armed with a few slight and scarcely distinct spines. 



The specimens from the Philippine Islands have the me- 

 sothorax more strongly granulated. 



Plate IV. Fig. 2. The female, of the natural size. 2 a. The 

 terminal segments of the abdomen seen sideways. 



3. (288.) Platycrania Phelaus, Westw. 

 Plate XXVII. fig. 5. 



Elongata, tota laevis, pallide fulvo-lutescens ; capite, 

 pedibus, tegminibus apiceque arese costalis alarum vires- 

 centibus, tegminibus ovalibus ; alis paulo ultra medium 

 segmenti 3'" abdominis extensis, albido-fulvis venis fulvis ; 

 femoribus subtus denticulatis ; operculo vix ultra apicem 

 segmenti 9 ni abdominis extenso. 



Long. corp. fere unc. 5 ; cap. lin. h\ ; .proth. lin. 4 ; me- 

 soth.lin. 10 ; metath. lin. 6| ; abdom.lin. 25 -f- lin. 10 = 

 lin. 35; tegm.lin. 10; alse, lin. 17; alar, expans. unc. 3. 



Hab. Feejee Islands (I). Maegillivray). B.M. 



This species is closely allied to PL Alpheus, but is at 

 once distinguished by the relative size of the wing-covers 

 and wings, more slender abdomen, smooth mesothorax, and 

 denticulated femora. The head is obovate and convex, very 

 smooth ; it is produced into a prominent angle in front of 

 each eye, behind each of which is also a slightly curved 

 longitudinal impressed line. The antennae are rather longer 

 than the pro- and mesothorax ; the first joint moderately 

 robust, the third and immediately following joints very 

 short, but gradually elongated. The prothorax is marked 

 on each side of its hinder portion with a slightly impressed 

 oval line, each preceded by strong punctures. The meso- 

 thorax is smooth and oblong, with a slender raised line 

 running along each side to the base of the wing-covers, 

 this line being punctured on its inner edge ; near the hind 

 margin it has two deep impressions, between which is a 

 minute scutellum-like plate. The abdominal segments are 



smooth and nearly square, each slightly constricted at its 

 base and apex ; the eighth and ninth joints attenuated, the 

 latter angulated along the middle of its upper surface. The 

 operculum is constricted near the base ; it is boat- shaped, 

 and extends very slightly beyond the extremity of the 

 ninth dorsal segment. The anal styles are short, broad, 

 and obtuse. The tegmina are oval, pale green, very strongly 

 and thickly reticulated, the membrane along the anterior 

 and posterior edges towards the base being brown ; the 

 strong discoidal vein is slightly elevated. The wings have 

 the costal area pale luteous at base, greenish at the apex ; 

 the veins more strongly coloured than the membrane ; the 

 chief vein is furcate both towards the base and about the 

 middle of the wing ; the hind portion is pale luteo-fulvous, 

 with the longitudinal veins fulvous, the transverse ones 

 nearly colourless. The legs are short and strong ; the 

 femora finely spined beneath. 



The unique specimen in the British Museum has the 

 left fore-leg not fully developed. 



Plate XXVII. Fig. 5. The female, of the natural size. 5 a. 

 The terminal segments of the body seen laterally. — (Note. 

 The operculum is represented a trifle too long.) 



Genus 29. ACROPHYLLA. 



Diura, G. R. Gray (Ent. Austr.). 



Acrophylla, G. It. Gray, and Ctenomorpha, pars, G. R. Gray 



(males), (Syn. Phasm. pp. 38-41). 

 Acrophylla, Serville. 



Cyphocrania, Sect. II., Barmeuter, Handb. d. Ent. p. 579. 

 Cyphocrania, Sect. A. pars, C & D, De Ilaan (Orth. Orient. 



p. 130). 



Body very long, cylindrical, and slender in both sexes, 

 especially in the males. Head of moderate size, horizontal, 

 convex. Ocelli three, or wanting. Antennae short, or of 

 moderate length. Mesothorax about thrice the length of 

 the prothorax, generally more or less spined. Tegmina 

 elongate-ovate, about one-third or half the length of the 

 wings. Wings large or moderate in both sexes, being 

 longest in the males. Legs moderately long, longer in the 

 males, serrated ; hind tibia; not armed within with strong 

 teeth. Abdomen long, slender, cylindrical, especially in 

 the males ; anal styles very long and dilated, especially in 

 the females ; oviduct of the latter boat-shaped, not extend- 

 ing beyond the extremity of the body. 



Inhabit New Holland. 



The Australian species here brought together form 

 several divisions, according to the size of the wings. Thus, 

 in Act. Titan they are of large size in the female, whilst 

 in Acr. Chronus, &c. they are much shorter in the female. 

 A. violascens is destitute of ocelli . De Haan unites A. 



