14 



CATALOGUE OF ORTHOPTEROUS INSECTS. 



near the base, and the abdominal segments have a lateral 

 and sublateral slender carina on each side. All the legs 

 are wanting in the single female specimen which I have 

 seen in the British Museum collection. 



Plate VIII. Fig. 2 b. The head and antennae. 2 c. The ter- 

 minal segments of tlie abdomen, seen sideways. 



34. Bacillus Crouanii. 



" Supra brunneo-viridis, infra testaceus ; antennis 20-ar- 

 ticulis, complanatis ; prothorace capitis latitudine, sed panlo 

 breviore, duobus sulcis obsoletis cruciato ; mesothorace 

 Isevi nee carinato ; pedibus striatis ; tarsis obsolete pilosis, 

 prime articulo una trium sequentium longitudine." 



" Long. 70 mill., lat. 3^ mill." 



Bacillus Crouanii, Le Guillou in Gitfriti's Rev. Zool. 1841, 

 p. 293. 



Hah. Hamoa. 



35. Bacillus Hookeri, Tl'hite. 



Viridis ; capite carina obliqua inter oculos et basin an- 

 tennarum, vertice linea tenui nigra lineisque duabus nigris in 

 lateribus deflexis capitis ; hoc et thorace Isevibus ; pronoto 

 linea tenui media antica nigra alteraque breviore postica ; 

 metanoto linea nigra media in jjarte antica ; pedibus acute 

 angulatis ; femorum angulo unico vage serrato ; tibiis iner- 

 mibus ; antennis nigris articulis duobus basalibus fiavis. 



Mas. Long, corp.unc. 2| ; anten.lin. 7; proth. lin. \\ ; 

 mesoth. hn. 5 ; metath. lin. 4 ; abdom. lin. 11 -|-Un. 4 = 

 lin. 15. 



Foem. Long. corp. unc. 3^ ; anten. lin. 12 ; proth. lin. 2 ; 

 mesoth. lin. 8 ; metath. hn. 7| ; abdom. lin. 16-|-liu. G + 

 styl. anal. lin. 2=lin. 24. 



Bacillus Hookeri, White in Zool. Foy. Erebus ^' Terror 

 Ins. p. 24. pi. 6. f. 6. 



Hab. New Zealand. B.M. 



Obs. This species differs from B. australis especially in 

 all the tibice being destitute of spines, and in the oper- 

 culum of the female not extending beyond the extremity of 

 the abdomen. 



The male is very slender, the abdominal segments rather 

 dilated at the extremity, the seventh conical and consider- 

 ably dilated at its extremity ; the eighth nearly twice the 

 length of the seventh, obconic ; the ninth short, with its 

 lateral ajiical angles strongly defiexed and extended back- 

 wards, with the two anal styles elongated; exserted, curved 

 and subclavate ; the seventh and eighth ventral segments 

 are very short, and the ninth does not extend beyond the 



middle of the eighth dorsal segment, it is swollen and has 

 a conical protuberance near its base. The legs of the male 

 are slender and scarcely serrated. The antennae of both 

 sexes extend nearly to the hinder extremity of the meso- 

 thorax, and are attenuated to the tip. 



The female is subrugose, much broader than the male ; 

 the head and thorax distantly granulated, the anterior 

 grannies in front of the head arranged in a V-like mark ; 

 the abdomen gradually narrowed to the end of the sixth 

 segment, the seventh gradually widened beneath, the eighth 

 and ninth gradually narrowed to the tip (the eighth much 

 longer than the ninth) ; the two anal styles are elongate, 

 exserted, straight and attenuated ; the operculum extends 

 to the extremity of the abdomen ; the legs have all the 

 femora more or less widely serrated ; the base of the fore 

 femora is rosy or fulvous coloured. 



36. Bacillus aunulatus, Westw. Plate VII. fig. 6. 



Gracilis, subfiliformis, mesonoto et abdomine crebre gra- 

 nulosis ; pallide griseus, segmentis abdominalibus basi ob- 

 scure annulatis ; antennis brevibus (longitudine protho- 

 racis), circiter 1 5-articulatis ; pedibus brevioribus simplici- 

 bus ; abdominis segmento ultimo conico, stylis duobus 

 longis conniventibus instructo (mas). 



Long. Corp. unc. 2^; anten. lin. 3J ; proth. lin. I ; 

 mesoth. lin. 5 ; metath. lin. 5 ; abdom. lin. 10-)- lin. 3|^= 

 lin. 13i. 



Hah. 1 B.M. 



Slender, subfiliform, destitute of spines, smooth, with the 

 mesonotum and abdominal segments finely granulose ; the 

 general colour pale grey, with the abdominal segments 

 banded at the base with blackish. A black line extends 

 from the middle of the crown of the head to the front of the 

 mesothorax, which with the metathorax is furnished on each 

 side near the extremity with an elongated slightly raised 

 space, whitish-grey coloured and finely punctured. The 

 mesothorax is not longer than the metathorax, and-has also 

 a row of tubercles on each side ; the three basal segments 

 of the abdomen have a triangular dusky patch at the base 

 of each, and the abdomen is greyish-white with some black 

 punctures. The antennae are short (not extending beyond 

 the prothorax) and 1 G-jointed ; the seventh abdominal seg- 

 ment is gradually dilated from the base to the extremity, 

 and the eighth is as gradually narrowed ; the ninth again 

 is gradually widened, being truncate at its extremity, with 

 two long anal exposed styles which cross each other ; the 

 three terminal ventral segments are very short, not extend- 

 ing to the extremity of the eighth dorsal segment, the 



