CATALOGUE OF ORTHOPTEROUS INSECTS. 



1 I 



Long. Corp. unc. 4, lin. 5 ; cap. lin. 2^ ; proth. lin. 2 ; 

 mesoth. liu. IQi; metatli. lin. 8 ; abdom. liu. 24 + lin. 6 

 =lin. 30. 



Hab. In Assam (Z). Jenkiiis). In Mus. Westwood. 



The antennse of the unique specimen of this species in 

 my collection being broken oif beyond the basal joint, I am 

 unable to determine precisely whether it belongs to this 

 genus or not ; but its apparent affinity to Bac. ni/phereoti 

 and Alauna and the dilated basal joint of the antennse 

 favour such an opinion. The head is rather longer than 

 wide, gradually narrowed from the eyes to the base ; the 

 disk is convex (not acutely elevated at the base), covered 

 with numerous minute granules, wliich are arranged in 

 about seven irregulai- longitudinal rows. The basal joint of 

 the antennse is moderately large, nearly oval, depressed, 

 with a small carina along the middle. The mesothorax is 

 long and subcylindrical, but little dilated above the base of 

 the middle legs. The metathorax is long, of equal width 

 with the mesothorax, its hinder division rather short. 

 The abdomen is long, more slender than the thorax ; the 

 segments simple, except the sixth, which is armed beneath 

 at its extremity with a strong deflexed spine ; the three 

 terminal segments of the abdomen are compressed, the 

 eighth segment being about half the length of the seventh 

 segment ; the ninth segment is subtruncate at its extremity, 

 with the outer apical angles rather produced. The oper- 

 culum is long and compressed, black and granular at its 

 extremity, which does not quite reach the extremity of the 

 abdomen ; the two apical styles are small and deflexed. 

 The fore legs are wanting ; the middle ones are rather 

 short ; the femora furnished with a small conical leaflet on 

 the under side ; the under side near the apex is armed with 

 several very minute spines ; the tibiae are armed with several 

 minute and widely affixed spines ; the basal joint of the 

 tarsi is rather longer than the second and third joints taken 

 together. 



25. Bacillus Amathia, Westiv. Plate XXIIL fig. 9. 



Luteo-fuscus, opacus, subcylindricus ; abdomine latiori, 

 convexo ; antennis capite vix duplo longioribus, articulo 

 basali magno, dilatato ; vertice ante medium spinis duabus 

 acntis erectis armato ; nietathorace subbrevi ; abdomine 

 longitudinaliter striolato, segmentis tribus apicalibus bre- 

 vioribus, stylis analibus latis ovalibus ; pedibus (anticis 

 deteritis) crassioribus ; femoribus quatuor posticis ante 

 apicem subtus spinula armatis tibii&que subspinulosis. 



Long. Corp. unc. 'i\ ; cap. lin. 3 ; auten. lin. 6 ; proth. 



Un. 2; mesoth. lin. !) ; nu-tath. liu. 5|; abdom. lin. 15 + 

 lin. 5=lin. 20. 



Hafj. In regionibus septentrionalibus Indix orientalis. 

 In Mus. East India House. 



This species is more robust than most of the preceding 

 insects. It is entirely of a dull luteous-brown colour, not 

 glossy, and destitute of tubercles. The head is oblong, 

 slightly narrowed from the eyes to the hind margin, which 

 is elevated and divided into several small tubercles ; the 

 front of the vertex is armed with two erect acute spines. 

 The antennse are not twice the length of the head ; the 

 basal joint is large, subovate and flattened ; the third and 

 remaining joints are filiform ; the terminal ones very short. 

 The metathorax is about half the length of the mesothorax ; 

 its hinder division is very short. The six basal segments 

 of the abdomen are swollen, with several longitudinal striae, 

 a more conspicuous raised line down the middle of the back 

 and in the middle of each side ; the three terminal s,ez- 

 ments are short, compressed ; the last rounded at its extre- 

 mity, with two large oval anal styles. The operculum 

 scarcely reaches to the extremity of the last dorsal segment. 

 The fore legs are wanting in the unique specimen before 

 me ; the four huad ones are rather robust ; the femora have 

 a minute spine beneath near the tip ; and the tibiae are 

 armed with a few minute and distant spines on each edge ; 

 the basal joint of the intermediate tarsi is as long as the 

 three following joints together. 



20. Bacillus Souchongia, Westw. Plate VII. fig. 8. 



Gracillimus, filiformis, inermis ; antennis fere longitudine 

 mesothoracis, 18-articulatis ; pallide luteus, linea tenui media 

 fusca e capite ad anum extensa ; abdominis segmentis api- 

 calibus pauUo latioribus, 8vo angulis posticis acuminatis de- 

 flexis, 9no subemarginato, stylis caudalibus longis et valde 

 curvatis ; pedibus longis, gracilibus, siniplicibus (mas). 



Long, corp .unc. 2\ ; cap. lin. Ij ; anten. Un. 7 ; proth. 

 lin. 1 ; mesoth. lin. (i\ ; metath. lin. 5 ; abdom. lin. ll-J + 

 lin. 1\—\\xi. 14. 



Jlah. In China. 



B.M. 



Very slender and filiform ; entirely destitute of spines or 

 tubercular processes ; entirely pale luteous, with a brown 

 line down the centre of the thorax and abdomcu on the 

 upper side. The antenuse short (not quite so long as the 

 mesothorax), 18-jointed, and very slender; the thoracic 

 segments simple ; the abdominal segments slightly thickened 

 at the tips, the eighth segment having its posterior lateral 

 angles acuminated and deflexed, the ninth segment gra- 



