CATALOGUE OF ORTIIOPTEROUS INSECTS. 



13 



31. Bacillus Dolomedes, Westio. Plate V. fig. 4. 



Gracilis, subcylindricus, subnitidus, pallide luteo-viridis ; 

 capite utiinque liiiea castanea pone oculos ; mesonoto utrin- 

 que serie tuberculoruin nigvorum liueaque castanea quae 

 per latera metanoti etiam extendit ; stylis analibus oper- 

 culoque valde clongatis; pedibus brevibus ; femoribus ser- 

 ratis (foem.). 



Long. Corp. uuc. 4f ; cap. lin. 3|^ ; anteu. liu. 8 ; proth. 

 lin. 2 ; mesoth. lin. 11 ; metath. lin. 7 ; abdom. lin. 22 + 

 lin. 6 + operc. lin. 4= lin. 32. 



Hah. New Holland. . B.M. 



Long and rather slender, subcylindric, rather glossy, 

 entirely pale luteous-greeu. Head rather large, destitute 

 of spines. Antennge short, not reaching the extremity of 

 the fore femora. Meso- and metathorax marked on each 

 side with a longitudinal chestnut line, which in the former 

 bears a row of black tubercles. The abdomen is long, the 

 segments gradually but slightly diminishing in size and 

 width to the last, which is acute, bearing mi its under side 

 the two exserted anal styles. Operculum very long and 

 boat-shaped, extending considerably beyond the last dorsal 

 segment of the abdomen. The legs, especially the four 

 posterior, are rather short ; the fore femora curved at the 

 base and widely serrated along the upper edge ; the four 

 hind femora are more robust and more strongly serrated 

 beneath ; the tibise are slender, the four posterior armed 

 with two or three very minute spines. 



Plate V. Fig. 4. The female, of the natur.il size. 4 a. Tlie 

 three terminal segments of the abdomen seen sideways. 



32. Bacillus Peristhenes, Tf'estw. 

 Plate VIL fig. 1, male. Plate VIII. fig. 2, female. 



Luteo-viridis, elongatus, gracilis, filiformis ; abdomine 

 attenuate, stylis analibus valde elongatis, rectis, compressis ; 

 maris thorace incrmi, Ipevi, fccminse granuloso ; pedibus 

 gracilibus, omnino incrniibus ; femoribus utriusque sexus 

 serie punctorum minutorum nigrornm lougitudinaliter dis- 

 posita, omnibus inermibus (mas et foem.). 



Mas. Long. corp. unc. 2 ; cap. lin. 2 ; anten. lin. 5 ; 

 proth. lin. 1 ; mesoth. lin. 4 ; metath. lin. 3 ; abdom. lin. 1 1 

 -flin. 3-|-styl. anal. lin. 3=lin. 17. 



Foem. Long. corp. unc. 3^ ; cap. lin. 2i ; proth. lin. H ; 

 mesoth. lin. 6| ; metath. lin. 4 ; abdom. lin. 19 + liu. 5-)- 

 styl. anal. lin. 4=lin. 28. 



Hub. In Australia. B.M. 



The male is luteous-green, smooth, slender, filiform, de- 

 stitute both of spines and tubercles. The antennae slender. 



reaching to about two-thirds of the length of the fore femora, 

 19- to 21-jointed; the basal joint rather narrow, the re- 

 mainder of equal thick[iess throughout. The head beneath 

 is white, with a black or brown lateral vltta extending from 

 the eyes to the prothorax, the middle of the black mark 

 being granulated with luteons ; the crown with a small 

 circular impression between the hind part of the eyes. Tlie 

 abdomen is long and slender with the sides nearly jjarallel ; 

 the third segment is deeply impressed on its under side ; 

 the two anal styles are transformed into a pair of long, thin, 

 sabre-shaped filaments, extending far beyond the extremity 

 of the body. The legs are moderately long, slender, and 

 simple, each of the femora both in front and behind with a 

 row of minute black dots. The basal joint of all the tarsi 

 is as long as all the remaining joints. 



The female is larger, with shorter legs, and the abdo- 

 men more attenuated from the middle to the extremity, 

 which is furnished with a pair of anal styles not quite so 

 long as the eighth and ninth dorsal segments united toge- 

 ther ; the operculum is very acute at its extremity, which 

 reaches to about two-thirds of the length of the eighth 

 dorsal segment, which is rather longer than the seventh ; the 

 meso- and metathorax are covered with minute granules, the 

 former being furnished with minute rudimental tegmina. 



Plate VII. Fig. 1. The male, of the natural size. 1 a. The 



terminal segments of tlie abdomen seen sideways. 

 Plate VIII. Fig. 2. The female, of the natural size. 2 u. The 

 terminal segments of its abdomen seen sideways. 



33. Bacilltis Peridromes, Westw. 

 Plate VIII. figs. 2 4, 2 c. 



Elongatus, gracilis, subcylindricus, obscure fuscus, iner- 

 mis, lEevis, impunctatus, baud nitidus ; antennis fere longi- 

 tudine mesonoti, apicibus sensim gracillimis ; segmentis ab- 

 dominis vitta lateral! et sublaterali instructis ; apice stylis 

 duobus valde elongatis arraato (foem.). 



Long. corp. unc. 2f ; cap. lin. 2 ; anten. lin. 1 ; proth. 

 liu. H ; mesoth. lin. 8 ; metath. lin. 4^^ ; abdom. Hn. 12| 

 -flin. oi-l-styl. anal. liu. 2i=lin. 18|. 



Huh. In Australia. B.M. 



This species is closely allied to B. Peristhenes, but differs 

 in the longer and very much attenuated antennse, less 

 parallel form of the bod}-, and longer operculum, which 

 reaches to the middle of the ninth dorsal segment ; the 

 antenufe are 21- or 22-jointed, gradually attenuated to the 

 tips ; the basal joint broad, with a channel along its upper 

 surface ; the body is smooth above ; the bead and prothorax 

 with a very slender central impressed brown line ; the nie- 

 sothorax has three or four very fine granules ou either side 



