CATALOGUE OF ORTHOPTEROUS INSECTS. 



terminal segments of the abdomen seen sideways. 7 b. The 

 terminal segments seen from behind. 

 Fig. 8. Tlie female, of the natural size. 8 a. The terminal seg- 

 ments of the abdomen seen sideways. 



14. Bacillus humilis, Westw. Plate II. fig. 7. 



Palliile luteo-viridis, gracilis, subcylindricus ; antennis 

 capite paullo longioribus, 16-articulatis ; lateribus capitis, 

 ineso- et metathoracis serie tuberculorum minutorum in- 

 structis ; subtus omnino Isevis et inermis ; abdomine stylis 

 duobus porrectis terminate ; operculo ad apicem abdominis 

 hand exteuso (fa3m.). 



Long. Corp. uuc. 2 ; ant. lin. 4 ; proth. lin. 1 ; mesoth. 

 lin. 4|; metath. lin. 4 ; abdom. lin. 13. 



Hab. Ceylon. B.M. 



The general colour is pale dirty yellowish-green; the 

 surface of the body smooth, and destitute of spines. The 

 head is oblong-ovate, with a row of minute tubercles on 

 each side. The antennae a little longer than the head, 16- 

 joiuted, the basal joint large and flattened. The thoracic 

 segments are simple, their sides alone being marked by a 

 row of minute tubercles. The metathorax is rather dilated 

 gradually to its hind part. The abdomen is long and 

 simple, gradually attenuated to the extremity; the seg- 

 ments with a lateral slightly defined margin. The body is 

 terminated by two small porrected styles, the three terminal 

 segments being marked with longitudmal furrows. The 

 operculum extends beneath the seventh, eighth, and greater 

 part of the ninth dorsal segments. The legs are long and 

 simple ; the anterior femora are curved at the base, and 

 the middle femora slightly thickened. The body beneath 

 is entirely simple. 



Plate XL Fig. 7. The female, of the natural size. 7 «■■ The 

 three terminal segments of the abdomen seen from the side. 



15. Bacillus Tranquebaricus, Westw. 



Elongatus, totus pallide fuscus ; abdomine ante medium 

 sensim latiori, apice attenuato (foem.). 

 Phasma Nympha, StoU, Spectr. pi. 10. f. 39. 



Hab. Tranquebar. 



16. Bacillus Indicus. Plate XXII. fig. I- 



" Flavescenti-brunnea, glabra, filiformis ; antenuis sub- 



brevibus, rufesceutibus, basi viridesceutibus ; pedibus me- 



diocribus simplicibus, anticis lineis elevatis striatis." 



Long. corp. 4" 2"'. 



Bacteria Indica, G. R. Gray, Syti. Phasm. p. 17. 



Hab. In India orientaH. Mus. Sykes ; Soc. Ent. Lond. 



B.M. 



The typical specimen of this species is in the National 

 Collection. To Mr. G. R. Gray's characters, copied above, 

 it may be added, that the insect is a female, vvitii the body 

 and legs entirely destitute of spines ; it is very long and 

 narrow, with the sides nearly parallel, its proportions being: 



Head, lin. ll ; ant. lin. ;') ; jiroth. lin. 2 ; mesoth. lin. 1 1 ; 

 metath. lin. 7^ ; abdom. lin. 23 + lin. 4 = lin. 27. Total, 

 unc. 4^. 



The antennae are 20-jointed ; the basal joint is grey, 

 setose, and carinated down the middle. The head has the 

 hind margin raised and notched in the middle. The eightli 

 dorsal segment of the abdomen is not more than half the 

 length of the preceding ; and the operculum extends to 

 half the length of the ninth dorsal segment. 



The following is the description of a female specimen in 

 the Collection of the Entomological Society of London : — 



Elongatus, gracilis, cylindricus, la;vis, omnino inermis ; 

 capite longo, margine postico elevato, et in medio inciso ; 

 auteunis capite vLs longioribus, circiter 25-articulatis ; arti- 

 culo basali magno depresso, in medio carinato ; segmento 

 apicali abdominis integro acummato, styUs duobus brevibus 

 latis exsertis instructo (foem.). 



Long. corp. unc. 3, hn. 7 ; ant. lin. 4 ; proth. lin. 2 ; 

 mesoth. hu. 9 ; metath. hn. 6i ; abdom. hu. 194- lin. 3^= 

 lin. 22|. 



Hab. In India orientah. In Mus. Soc. Ent. Londi- 

 nensis. 



Long, slender, cylindrical, with the segments continuous, 

 entirely smooth and destitute of spines or tubercles, and of 

 a pale brownish buff-colour. The head long and narrowed 

 behind, with the hind margin elevated and notched in the 

 middle. Antennse scarcely longer than the head, about 

 25-jointed ; the basal joint broad, oblong, rugose, and cari- 

 nated along the upper surface; the third and following 

 joints very minute. Prothorax not more than half the 

 length of the head, with an irregularly impressed Ime down 

 the middle. Meso- and metathorax and abdominal seg- 

 ments smooth, entire ; the latter gradually attenuated to 

 the extremity of the ninth segment, which is slender and 

 entire, exposing the two large, broad and setose caudal styles. 

 The operculum is acute at the tip, which does not extend 

 beyond two-thirds of the length of the ninth dorsal segment. 

 The legs are of moderate length and slender. 



Plate XXIL Fig. 1. The female, of the natural size. 1 u. The 

 terminal segments of the abdomen seen sideways. 



17. Bacillus Javanus. 

 Fuscus; antennis 16-articulatis, 2^'" longis ; mesotho- 

 race scabro ; metathorace et abdomine Isevibus, medio dorsi 



