126 



CATALOGUE OF ORTHOPTEROUS INSECTS. 



libus supra nigro bivittatis, ultimo apice emarginato, subtus 

 spiuulis rugoso (mas). 



Long. corp. lin. 23 ; cap. lin. 1|; proth. lin. 1 ; me- 

 soth. lin. Oj ; metath. lin. 4 ; abdom. lin. 10 + lin. 2 = 

 lin. 12 ; tegm. lin. 1 ; alae, lin. 11 ; alar, expans. lin. 23. 



Hab. In Brasilia (Tapajos, D. Uato). B.M. 



One of the most slender species of the family, and of 

 which I have only seen a single male specimen. It is cylin- 

 drical, smooth, destitute of spines or tubercles ; general 

 colour luteous. The head is wider than the prothorax ; eyes 

 prominent ; ocelli wanting. Antennae as long as the body. 

 Mesothorax long, and slenderer than the metathorax. Teg- 

 mina small, oblong-ovate, widest behind ; the apex acu- 

 minated ; carina slightly developed, pale green. Wings with 

 the costal area pale green ; hinder area hyaline, iridescent ; 

 the longitudinal veins nearly colourless, except at the base, 

 where the central ones are black. Legs long, slender, 

 and simple ; the extremity of the four posterior tibiae and 

 of the basal joint of the tarsi fuscous ; basal joint of the 

 anterior tarsi three-fourths, and of the hind tarsi two-thirds 

 of the whole length of the tarsus. Abdomen very slender, 

 slightly clavate at the tip, the extremity of the seventh and 

 base of the eighth segments being widest ; these two seg- 

 ments are marked on the upper side with two dark vittae ; 

 the ninth segment is subquadrate, slightly emarginate at 

 its extremity, and rugose on its under side, with small 

 points ; anal styles deflexed, obtuse, short ; the terminal 

 ventral segments slightly swollen. 



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

 terminal segments of the body seen sideways. 1 b. The 

 terminal segment seen from beneath. 



29. (330.) Phasma Valgius, Westw. 

 Plate X. fig. 3, male. 



Gracillimum, filiforme, laeve ; capitis margine postico 

 serie tuberculorum instructo ; mesothorace elongato, granu- 

 loso ; tegminibus parvis, ovalibus, pallidis, venis longitudi- 

 nalibus maculaque parva discoidali fuscis ; abdomine elon- 

 gato, apice vix clavato, segmento ultimo apice fisso ; pedi- 

 bus elongatis. 



Long. corp. unc. 2^- ; cap. lin. \\ ; proth. lin. \\; mesoth. 

 lin. 5 ; metath. lin. 3^ ; abdom. lin. 13 + lin. 2=lin. 15 ; 

 tegm. lin. 2 ; alee, lin. 13 ; alar, expans. lin. 27. 



Hah. ? B.M. 



An extremely slender filiform species, with long and de- 

 licate legs and antennae. The general colour is pale luteous 

 buff. The head is moderate-sized ; eyes prominent ; ocelli 



wanting ; hind margin of the head with a transverse row 

 of minute tubercles. Antennae long, with broad darker 

 bands. Mesothorax elongated, finely granulose. Tegmina 

 ovate, with brown longitudinal veins, and a dark spot near 

 the base. Wings subhyaline ; costal area darker. Legs 

 long and simple (anterior wanting) ; basal joint of the tarsi 

 of moderate length. Abdomen long, slender, and cylin- 

 drical ; the seventh segment gradually thickened ; the 

 eighth dilated at the sides beneath ; ninth small, with a deep 

 notch at the tip ; anal styles short, obtuse ; three termi- 

 nal ventral segments scarcely extending beyond the middle 

 of the eighth dorsal segment, moderately swollen. 



Plate X. Fig. 3. The male, of the natural size. 3 a. The 

 terminal segments of the abdomen seen laterally. 



30. (331.) Phasma Phantasma, Westw. 

 Plate XII. fig. 5, male. 



Gracillimum, cylindricum, inerme ; antennis pedibusque 

 elongatis ; pallide luteo-fuscum, capite et pronoto fusco va- 

 riegatis ; mesonoto lineis nigris tenuissimis ; tegminibus 

 parvis, oblique truncatis ; alis vix fusco tinctis, area costali 

 obscuriori ; pedibus pallide luteis fusco fasciatis (mas). 



Long. corp. unc. 2^ ; cap. lin. 1 ; proth. lin. 1 ; mesoth. 

 lin. 6 ; metath. lin. 5 ; abdom. lin. 14 + lin. 2 = lin. 16 ; 

 tegm. lin. 1^; alae, lin. 11^; alar, expans. lin. 23^. 



Hab. Tapajos, in Brasilia (D. Bates). B.M. 



Very long, slender, and cylindrical, smooth, not glossy, 

 pale luteous brown. Head small, depressed ; eyes large, 

 prominent, dark along the front margin, a dark line in the 

 middle ; hind part with more or less distinct, slender dark 

 lines. Antennae long, slender, pale luteous brown. Pro- 

 thorax varied with several short and slender dark lines. 

 Mesothorax long, with a greenish tinge, and with a central 

 and lateral very fine black line. Tegmina small, pale brown, 

 oblique, truncate at the extremity, pale yellow on the outer 

 side near the base. Wings very slightly stained with dusky 

 colour (almost iridescent) ; the costal area very pale brown ; 

 principal vein entire, reticulations wide apart ; longitudinal 

 veins of the hind portion very slightly coloured with brown. 

 The abdomen is filiform, pale luteous brown, each segment 

 with a dark dorsal line and four small black dots arranged 

 in a square near the hind margin ; the terminal segment is 

 deeply emarginate behind ; the under surface at the extre- 

 mity armed with minute hooks ; the anal styles curved, ob- 

 tuse at the tips, not extending beyond the extremity ; the 

 terminal ventral segments are swollen, and do not extend 

 to the extremity of the eighth dorsal segment. The legs 

 are very long, slender, and simple, pale luteous brown ; the 



