6 



CATALOGUE OF ORTHOPTEROUS INSECTS. 



its hind angles the ninth segment bears a pair of long curved 

 clavate styles, which cross each other like a pair of forceps. 

 On the under side the thorax and abdomen are quite simple ; 

 the three terminal ventral segments, especially the eighth, 

 small, and not, or scarcely, extending to the hind margin of 

 the eighth dorsal segment. 



Plate II. Fig. 4. The male, of the natural size. 4 a. The 

 terminal segments of the abdomen'seen laterally. 4 b. The 

 same seen from below. 4 c. The same part of the body 

 from another specimen. 



12. Bacillus Coccyx, Westw. Plate VII. fig. 5. 



Elongatus, subgracilis, laevis, nitidus, inermis, lurido- 

 viridi-fuscus ; pedibus lutescentibus fusco-variis ; abdomine 

 sensim attenuato ; operculo valde elongato, parte detecta 

 longitudine segmentorum trium apicalium sequante ; femo- 

 ribus anticis simplicibus, quatuor posticis subtus prope 

 apicem denticulatis (foem.). 



Long. corp. unc. 3, lin. 5 ; ant. lin. 6 ; proth. tin. 2 ; 

 mesoth. lin. G-i ; metath. lin. 6%; abdom. lin. 15+lin. 4£ 

 + operc. lin. 4=lin. 23|. 



Hah. In Africa australi. B.M. 



Allied to Bacillus Capensis, Serville. Entirely of a lurid 

 greenish-brown colour and glossy. The legs pale dirty 

 luteous-brown, with darker irregular markings. The hind 

 part of the head has two tubercles ; and the front of the 

 meso- and metathorax is finely granulose. The antennae 

 short, scarcely extending beyond the basal half of the fore 

 femora ; they are 23-jointed. The abdomen is gradually 

 attenuated from the base to the extremity of the ninth seg- 

 ment, which exposes a minute terminal lobe at its end, 

 as well as the two anal styles ; the eighth segment is shorter 

 than all the others ; the operculum is very long, extending 

 beneath the three terminal dorsal segments, and as far as 

 their conjoined length beyond them ; it is slender, boat- 

 shaped, and but slightly swollen beneath the eighth dorsal 

 segment. The fore legs are long and simple, the four 

 hind legs are shorter and thicker, and the femora are armed 

 beneath near the apex with several closely approximated 

 small spines. 



Plate VII. Fig. 5. The female, of the natural size. 5 a. The 

 terminal segments of the body seen sideways. 



13. Bacillus Natalia, Westw. 

 Plate XXIII. fig. 7, male ; fig. 8, female. 

 Luteo-fuscus, gracillimus, laevis ; capite elongato utrinque 

 linea pallida (per thoracem et abdomen extcnsa), alteraque 



nigra inclusa ; metathorace fere longitudine mesothoracis ; 

 pedibus gracilibus, inermibus ; antennis 1 8-articulatis, ma- 

 ris capite quadruplo-longioribus, fccmiuae vix longioribus ; 

 abdomine maris apice clavato, stylis analibus incrassatis et 

 incurvatis (mas et foem.). 



Mas. Long. corp. unc. 2, lin. 5 ; ant. lin. 5 ; proth. lin. 1 ; 

 mesoth. lin. 6£ ; metath. lin. 6 ; abdom. lin. 12+ lin. 2f 

 =lin. 14|. 



Foem. Long. corp. unc. 3| ; ant. lin. 3 ; proth. lin. li ; 

 mesoth. lin. 7\ ; metath. lin. 6£ ; abdom. lin. 18 + lin. 3 = 

 lin. 21. 



Hab. In Africa australi ; Port Natal. B.M. 



The male is very slender and filiform, with the thoracic 

 segments slightly dilated at the insertion of the legs, and 

 the abdominal segments very slightly and gradually thick- 

 ened from the middle to the extremity of each ; the three 

 terminal joints gradually clavate ; the last very convex, 

 rounded, and margined behind. The head is elongate and 

 subconvex, simple, with a pale line on each side enclosing 

 the eyes, and a dark line behind the eyes and extending 

 along the sides of the thorax and abdomen. The antennae 

 are about four times the length of the head, 18- or 19- 

 jointed ; the joints irregular in length, the basal joint but 

 slightly dilated. The metathorax is nearly equal to the 

 mesothorax in length, its hinder division being extremely 

 short. The abdominal segments are gradually, but very 

 slightly, thickened from the middle to the extremity of 

 each, and the three terminal segments are gradually clavate, 

 the last being very convex, with the hind margin rounded, 

 slightly margined behind ; the three terminal segments be- 

 neath are moderately swollen, short, not extending beyond 

 the eighth dorsal segment. The anal styles are rather 

 long, clavate, setose, and much incurved, one folding over 

 the other. The legs are very long and slender. 



The female is much more robust than the male, nearly 

 parallel, with the pale lateral line scarcely distinct. The 

 antennae are about half as long again as the head, 18-jointed; 

 the joints irregular in length, the basal joint but slightly 

 dilated. The hind margin of the head has a small depres- 

 sion in the middle ; the thoracic segments are smooth, with 

 a very fine line down the middle of the back, extending in 

 a more distinct carina towards the extremity of the abdo- 

 men. The metathorax is about five-sixths of the length of 

 the mesothorax, and its hinder division is very short. The 

 operculum extends nearly to the extremity of the body ; 

 and the two anal styles are very short, elongate ovate, and 

 setose. The legs are shorter and much more robust than 

 those of the male, and quite simple. 



Plate XXIII. Fig. 7- The male, of the natural size. 7 a. The 



