12 



CATALOGUE OF ORTHOPTEROUS INSECTS. 



dually widened ; the outer apical angles rounded, the hind 

 margin suhemarginate, and furnished beneath near its ex- 

 tremity with two long curved setose styles, extending beyond 

 the extremity of the abdomen, their tips meeting together ; 

 the three terminal ventral segments do not extend beyond 

 the extremity of the eighth dorsal segment. The legs are 

 long, slender, and simple. 



Plate VII. Fig. 8. The male, of the natural size. 8 a. The 

 three terminal segments seen sideways. 8 b. Ditto seen 

 from beneath. 



27. Bacillus (Linocerus) gracilis. 



Filiformis ; thorace abdominis longitudine, glabro ; viri- 

 descenti-brunneus ; pedibus longis, gracilibus, simplicibus ; 

 capite parvo ; antennis capite dimidio longioribus, 1 5-arti- 

 culatis, articulis lmo et 2do magnis depressis, reliquis mo- 

 niliformibus. 



Long. corp. 3" ; anten. G'". 



Linocerus gracilis, G. R. Gray, Syn. Phasm. p. 20. 

 Burmeister, Haitdb. d. Ent. ii. 2. 562. 

 Hab. In China. In Mus. Hope, olim, hodie haud in- 

 ventus. 



28. Bacillus Beecheyi. 



Elongatus, gracilis, brunneus, glaber ; capite inter oculos 

 comubus duobus brevibus armato ; pedibus brevibus, ob- 

 scure fasciatis ; lineis elevatis striatis (fcem.). 



Long. corp. 3" 2'" ; anten. 2'" ; mesoth. lin. 8 ; metath. 

 lin. 6 ; abdom. lin. 16 + lin. 5=lin. 21. 



Bacillus Beecheyi, G. R. Gray, Syn. Phasm. p. 21. 

 Burmeister, Handb. d. Ent. ii. 2. 562. 



Hab. In Insulis Sandvicensibus. 



B.M. 



In the type specimen preserved in the National Collec- 

 tion, the fore legs are broken off. The middle tibiae are 

 slightly dilated at the base beneath, with a small spine near 

 the base above and another small one near the middle be- 

 neath ; the hind femur is dilated, and armed with several 

 small spines near the tip beneath ; the tibia is dilated near 

 the base beneath, and slightly serrated beyond the middle ; 

 the eighth dorsal segment of the abdomen is short, the 

 ninth nearly twice the length of the eighth, carinated above 

 and notched at its extremity, exposing a pointed anal lobe 

 extending backwards more than half the length of the 

 ninth segment ; the two anal styles are very short, and the 

 operculum does not extend beyond the middle of the ninth 

 dorsal segment. The antennae are at least 19-jointed, the 

 third and following joints being very short and transverse. 



29. Bacillus brunneus. 



Filiformis, flavo-brunneus ; thorace tuberculis parvis al- 

 bis ; pedibus brevibus ; femoribus 4 posticis interne multi- 

 dentatis ; antennis capite vix longioribus. 



"Long. corp. 2" 11'"; anten. 3'"." 



Bacillus brunneus, G. R. Gray, Ent. Australia, pi. 7. f. 3 ; 



Syn. Phasm. p. 21. 



Burm. Handb. d. Ent. ii. 2. 562. 



Hab. In Australia (Swan River). In Mus. Hope. B.M. 



The typical specimen in the British Museum is now 

 destitute of the abdomen ; the antennas are of the length 

 of the head, with the basal joint short, broad, and nearly 

 circular, with a broad carina down the middle ; the meso- 

 thorax is marked with white tubercles, and all the femora 

 are finely denticulated. 



30. Bacillus australis. 



Viridis aut brunnescens, maris vertice albido ; fceminae 

 femoribus quatuor posticis subincrassatis, subtus utriuque 

 rufo dentatis ; tibiis posticis serratis (mas et fcem.). 



Mas. Long. corp. unc. 3, lin. 7 ; cap. lin. 2 ; proth. 

 lin. If; mesoth. lin. 8; metath. lin. 6£ ; abdom. lin. 21 

 -Mm. 4= lin. 25. 



Foem. Long. corp. unc. 4f ; cap. lin. 3 ; proth. lin. 2 ; 

 mesoth. lin. 10 ; metath. lin. 9 ; abdom. lin. 25 + lin. 8 = 

 lin. 33. 



Bacillus australis, Charpentier, Orth. Descr. pi. 57. male 

 et fem. 



Hab. In Australia. 



B.M. 



Obs. The male has the body slender and filiform, and 

 the female has the abdomen wider than the metathorax, 

 but with the fourth, fifth and sixth segments gradually 

 attenuated, the seventh, eighth and ninth slender ; the 

 abdomen in both sexes is terminated by two elongated, 

 exserted, straight anal styles pointed at the tips, and the 

 operculum of the female does not extend beyond the 

 middle of the ninth dorsal segment. In numerous speci- 

 mens in the National Collection from King George's 

 Sound, the hind tiSiae are strongly serrated, and the thorax 

 is entirely smooth. 



Although closely allied to B. brunneus, the present spe- 

 cies is quite distinct. The antennae in both sexes are 23- 

 jointed ; they are filiform, not attenuated towards the tip ; 

 the basal joint twice the width of the following joints. There 

 is a dark brown line down the whole of the back. The 

 anterior femora are quite simple ; the four hind femora 

 have three rows of spines on the under side. The middle 

 tibiae are smooth, or with two or three minute serrations, 

 and the two hind tibiae have two rows of spines. 



