PHASMIDiE. TROPIDODERUS. 



165 



scure viridibus, vitta obliqua pallide straminea ; alarum 

 area costali pallide virescenti-fusca, postica parte fusco 

 parum tincta, venis distinctis nigricantibus ; capitis vertice 

 postico, pro- et mesothorace rugosis, pronoti lateribus in 

 medio spina majori armatis ; abdomine longitudinaliter 3- 

 carinato, segmentis tribus ultimis dilatatis, stylis analibus 

 porrectis et dilatatis ; pedibus brevibus, latis, rugosis, femo- 

 ribus 4 posticis infra spinis armatis (mas). 



Long. corp. maris, tin. 19 ; cap. lin. 1^ ; proth. tin. 2; 

 mesoth. lin. 2\ ; metath. lin. 2 ; abdom. lin. 9 + lin. 3 = 

 lin. 12; tegm. lin. 4 ; alar, expans. lin. 24. 



Hab. In Venezuela. B.M. 



I have only seen a single specimen of the male of this 

 species (which also differs considerably from the types of 

 this group, and which, when the other sex is- known, will 

 probably be found to constitute a distinct genus), in the 

 National Collection. It is of a dull luteous-brown colour, 

 and opake with a greenish tinge, the head, pro- and mesotho- 

 rax being finely granulose. The tegmina are dark green in 

 the middle, the sides being of a browner tint, with a pale 

 straw-coloured oblique vitta arising on the outside of each 

 near the base and extending to the middle ; the hind wings 

 have the costal area pale greenish brown, with darker 

 veins and veinlets, and the hinder area is very slightly 

 tinged with dusky, with thick longitudinal blackish veins 

 and dusky transverse ones. The head is broader than long, 

 flattened between the eyes ; the flattened part bordered by 

 a semicircular row of about eight small conical points, the 

 two central ones being the largest. The antennae are thick 

 and hirsute (the tips broken off in the specimen before me). 

 The pronotum has two small erect spines in the middle of 

 the hind part of its anterior division, the posterior division 

 having also a pair of stronger laterally porrected spines near 

 the hinder angles ; the deflexed margins of the mesothorax 

 are sinuated. The tegmina are about the length of the 

 pro- and mesothorax united, elongate-ovate, narrowed be- 

 hind. The wings moderately large. The abdomen is much 

 narrower than the thorax, with a raised central line run- 

 ning down the middle ; the fourth and following segments 

 also with a similar raised line on each side ; the seventh 

 segment is gradually widened behind, the eighth long and 

 gradually narrowed, the ninth small and subquadrate ; the 

 anal styles small ; the eighth segment is furnished beneath 

 with a broad foliaceous lobe extending considerably beyond 

 the extremity of the body ; the seventh ventral segment 

 and the base of the ninth are moderately and roundly- 

 swollen, the last extending nearly to the extremity of the 

 ninth dorsal segment. The legs are short and rugose ; the 

 femora dilated, especially the anterior pair, which are ful- 



vous, with a broad black longitudinal mark beneath ; the 

 under edge of the four posterior with several short spines ; 

 the tarsi have the basal joint scarcely longer than the se- 

 cond joint. The prosternum has two minute setose lobes 

 behind the base of the fore legs. 



Plate XIII. Fig. 5. The male, of the natural size. 5 a. The 

 three terminal segments seen laterally. 5 b. The same 

 seen from beneath. 



Genus 36. TROPIDODERUS. 



Tropidoderus, G. R. Gray (Syn. Phasm. p. 3 1 ), Burmeister, 



Be Haan. 

 Trigonoderus, G. R. Gray (Ent. Austral.). 



Body large, with elongate-ovate tegmina and very large 

 wings in both sexes. Head oblong, destitute of ocelli ; of 

 the female flat, posteriorly subconvex. Antennae of the 

 male as long as the entire thorax, 24-jointed ; of the female 

 scarcely longer than the mesothorax, 26-jointed. Meso- 

 thorax of the male slender, cylindrical, twice the length of 

 the prothorax, sides finely serrated ; of the female about 

 twice the length of the prothorax, subtriangular, carinated 

 in the middle, with the sides slanting and serrated. Teg- 

 mina of the male extending nearly to the middle of the first 

 segment of the abdomen ; of the female about half the 

 length of the abdomen ; median carina scarcely elevated iu 

 both sexes. Wings in both sexes large, nearly as long as 

 the abdomen ; those of the male narrower. Legs short, 

 simple ; basal joint of all the tarsi short ; four posterior 

 femora in the male slender and strongly serrated on all 

 their angles, those of the female with the fore margin di- 

 lated and dentated. Abdomen of the male long, slender, 

 and cylindric ; of the female broad, gradually narrowed to 

 the tip, sides margined ; ovipositor large, boat-shaped, ex- 

 tending beyond the extremity of the abdomen, but shorter 

 than the anal styles, terminated in both sexes by mode- 

 rately long anal styles. 



1. (435.) Tropidoderus Childrenii. 



Mas. Brunneus ; mesothorace scabriusculo ; tegminibus 

 postice olivaceis, disco antico albo, extrorsum viridi margi- 

 nato, introrsum rufo marginato ; alis hyalinis albidis, nervis 

 brunueis basi violascentibus, area costali olivacea, margine 

 anteriori juxta basin albo, hoc interne rufo marginato ; fo- 

 liolis duobus longis subfiliformibus ; pedibus anticis lon- 

 gioribus, quatuor posterioribus mediocribus dentatis. 



Foem. Capite prothoraceque albidis; mesothorace scabro, 

 subflavo ; tegminibus viridibus ; alis hyalinis albis, nervis 

 flavescentibus, area costali viridi, juxta basin flava, basi vio- 



