30 



CATALOGUE OF ORTHOPTEROUS INSECTS. 



dual. It is quite cylindrical, the thoracic segments being 

 considerably dilated at the insertion of the legs, and the 

 abdominal segments gradually but slightly narrowed in the 

 centre, the extreme base and apex being also slightly con- 

 stricted. The general colour is greenish brown, with the legs 

 slightly mottled with buff. The head is short, broad, and 

 armed with two erect spines behind the eyes on the crown. 

 The antennae are very long and slender, slightly ringed with 

 buff. The prothorax is armed with a pair of erect spines 

 in the middle of its hind part. The mesothorax is very long 

 and slender, with several minute whitish tubercles arranged 

 irregularly ; it is armed at its extremity with two erect 

 spines in the middle, and two smaller ones at the sides. 

 The metathorax is about four-fifths of the length of the me- 

 sothorax and rather more dilated at its hinder extremity, 

 which is armed with two erect spines at the extremity of 

 its anterior portion, and two smaller and wider apart at the 

 extremity of the hinder portion ; it is also armed with a 

 small tubercle and a spine on each side in front of the legs. 

 The abdomen is slender, with the joints slightly widened 

 near the base and extremity, each however being very 

 slightly constricted ; the first segment has a pair of spines 

 on its upper surface at the hinder part ; there is also a cor- 

 responding but much smaller pair on the second joint ; the 

 seventh and eighth segments are wider than the preceding, 

 and the ninth is greatly swollen both laterally and on the 

 upper side, concave beneath ; the terminal ventral segments 

 are much compressed and deflexed, extending to the ex- 

 tremity of the eighth dorsal segment, which is emarginate 

 at its lateral margins ; and the anal styles are large, incurved 

 and obtuse. The legs are long and slender ; the four pos- 

 terior femora with a minute spine near the apex beneath ; 

 the tarsi long and very slender, the basal joint as long as 

 all the following joints taken together. 



Plate XXIV. Fig. 2. The male, of the natural size. 2 a. The 

 terminal segments of the body seen sideways. 2 6. The 

 last segment, with the anal styles, seen from behind. 



32. (84.) Bacteria rubispinosa. 



Subrugosa, pallide flava ; capitis vertice sub-bitubercu- 

 lato ; prothorace capitis longitudine, mesothorace protho- 

 race sextuplo longiore et multo latiori ; supra, spinis nu- 

 merosis crassis armato, marginibusque spinosis ; metatho- 

 race mesothorace e tertia parte breviori, in medio supra 

 noduloso-dilatato ; pedibus fulvo brunneoque subfasciatis, 

 antennisque fulvo-brunneis (fcem.). 



Long. corp. 6j unc. 



Bacteria rubispinosa, Serville, H. n. Orth. p. 224. 

 Hab. In Cayenna. Olim in Mus. Serville. 



33. (85.) Bacteria Trophinus, Westw. 

 Plate V. fig. 5. 



Gracillima, filiformis, subnitida, olivaceo-fusca ; abdo- 

 mine magis fusco ; capite spinis duabus nigris inter oculos ; 

 capite sub oculos utrinque linea lata albida notato ; anten- 

 nis longissimis, fuscis, annulis duobus albis prope apicem ; 

 pedibus longis ; femoribus paullo crassioribus, pallide ne- 

 bulosis ; segmento 9no abdominis lato, emarginato ; stylis 

 duobus longis subclavatis forcipatis (mas). 



Long. corp. unc. 5 ; anten. unc. 4 ; proth. lin. 2 ; me- 

 soth. lin. 14 ; metath. lin. 12 ; abdom. lin. 25 + lin. 5= 

 lin. 30. 



Hab. Port Natal. B.M. 



Greenish brown, slightly glossy, the head on each side 

 with a broad white stripe beneath the eyes, and with dark 

 streaks on the crown ; the two spines between the eyes 

 black ; antennae brown, with two whitish rings near the 

 tip ; the legs, especially the anterior pair, witli light irre- 

 gular cloudings ; the four hind femora with a row of minute 

 white dots. Body slender and cylindric ; the meso- and 

 metathorax slightly dilated at the tips, as well as the ninth 

 abdominal segment, which is impressed at each side, with 

 the apical angles rounded off and emarginate in the middle, 

 with the two anal styles long, clavate, and forcipate (the 

 terminal ventral segments are mutilated at the tip in the 

 unique male in the National Collection). The legs are 

 very long and slender, the femora slightly thickened, the 

 middle femur on the right side having a small spine on its 

 hinder surface near the base. 



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

 three terminal segments of the abdomen seen from the side. 



34. (86.) Bacteria lineata. 

 " Cserulescens, lineis longitudinalibus albis et nigris." 

 Long. corp. 3". 



Bacteria lineata, G. R. Gray, Syn. Phasm. p. 1 7. 

 Hab. In Africa (Sierra Leone). 



Not having seen this species, I can only give the short 

 characters from the ' Synopsis of Phasmidse.' 



35. (87.) Bacteria Emesa, Westw. Plate V. fig. 3. 



Gracillima, filiformis, cylindrica, omnino inermis, pal- 

 lide virescens, parum nitida ; abdomine fuscescente ; capite 

 linea media obscura ; pedibus pallide fuscis, subnebulosis ; 

 tibiis basi obscuris cum fasciis obscuris ; segmento ultimo 

 abdominis paullo latiori, lateraliter marginato, apice iute- 

 gro (mas). 



