170 



CATALOGUE OF ORTHOPTEROUS INSECTS. 



pink, with the extremity brown ; the principal vein is forked 

 about the middle of its length. The legs are rather short ; 

 the fore femora arched and broadly dilated ; the outer mar- 

 gin waved and hairy ; the tibiae gradually narrowed, slightly 

 waved ; the base with a small oval lobe, hairy on the hind 

 margin ; tarsi flattened. The middle legs are short and 

 dilated ; the femora with three or four waves ; the hind 

 femora flattened, with the anterior margin slightly, and the 

 hind one strongly, waved and hairy ; the tibise with the inner 

 edge waved and hairy; tarsi flattened. Abdomen long, 

 with the centre of each segment elevated, so as to form an 

 acute ridge ; terminal joints gradually widened, the eighth 

 lobed on each side ; termiual segment rounded ; anal styles 

 rather broad and prominent ; terminal segments beneath 

 flat, not extending beyond the eighth dorsal segment. 



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

 extremity of the body seen sideways. 1 b. The same seen 

 from beneath. 



11. (447.) Prisopus Guerinii, Westw. 

 Plate XXI. tig. I, male. 



Pallide fusco-luteus, fusco variegatus ; capite, pro- et 

 mesonotis muricatis, hoc brevi, postice sensini dilatato ; 

 tegminibus griseis, albido subtessellatis ; alis pallide lutes- 

 centibus opacis fusco subfasciatis, area costali ad basin pu- 

 nicea fusco varia ; femoriljus tibiisque posticis serratis (mas 

 et foem.). 



Long. Corp. maris, uuc. 2 ; cap. lin. 2^ ; anten. lin. 10 ; 

 proth. lin. 2 ; mesoth. lin. 4 ; metath. lin. 4J ; abdom. 

 lin. 9-t-lin. 2|=hn. 1 1^ ; tegra. lin. 5 ; alar, expans. lin. 21. 



Long. corp. foem. lin. 21 ; proth. lin. 2 ; mesoth. lin. 3^ ; 



metath. lin. 3^ ; abdom. lin. 12. 



Hab. In ' lie Maurice.' In Coll. Dom. Guerin-Meneville 

 Parisiis. 



This species is of a dull pale luteous coloui , varied, espe- 

 cially on the legs, with brown shades. The head, pro- and 

 mesonotum are covered with numerous gran ules and small 

 conical tubercles ; the head is nearly square. The antennae 

 slender and few-jointed. The mesothorax is short, and 

 gradually widened from the front to the hind part ; and the 

 abdomen is gradually narrowed from the base to the apex 

 in the male, but widened in the middle in the female ; in 

 the former sex the segments are also slightly lobed at the 

 extremity of each, and they are marked with longitudinal 

 posteriorly diverging carinaj down the centre. The tegmina 

 are oval, with the central carina scarcely elevated into an 

 angle towards the base ; they are grey-coloured, varied with 

 white spots. The wings are dull opake buff-coloured, varied 

 with irregular brownish fasciae ; the costal area is ])inkish 



grey, brighter-coloured at the base, and varied with brown 

 markings ; the main vein is furcate at about one-third of 

 the length of the wing from the base. The legs are mode- 

 rately long ; the fore femora arched and strongly serrated 

 on each angle, the serratures clothed with curved hairs ; 

 the fore tibise are slender and but slightly lobed, but the 

 four posterior tibise are lobed, especially on the upper edge, 

 and subserrated. 



The female has the oviduct wide at the base and truncate 

 at the extremity, which does not extend beyond the eighth 

 dorsal segment ; it is flattened, and followed by a furcate 

 appendage, the divisions of which are obtuse ; the anal 

 styles are minute and lateral. 



I am indebted to M. Guerin-Meneville of Paris for a 

 knowledge of this remarkable species. 



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

 extremity of the body seen sideways. 1 b. The extremity 

 of the body of the female seen sideways. 1 c. The same 

 seen from beneath. 



Genus 38. EXTATOSOMA. 



Extatosoma, G. 11. Gray, Serv., Burnt., I)e Haan. 

 Tropidoderus, Bndle. 



Body spinose ; of the male long, slender, and winged ; of 

 the female with the abdomen broad and dilated, and with 

 rudimental wings ; in both sexes with the middle segments 

 furnished with membranous lobes at the sides. Head 

 small, pyramidal, spinose at the apex. Ocelli in the male 

 distinct, wanting in the female. Antennse of moderate 

 length, pubescent, longer in the male. Mesothorax di- 

 lated behind, not twice the length of the prothorax. Teg- 

 mina of the male oval, as long as the metathorax ; those 

 of the female broader, scarcely more than half the length 

 of the metathorax. Wings of the male very large, with 

 the costal area distinct ; of the female rudimental, shorter 

 than the tegmina, and only extending to two-thirds the 

 length of the metathorax. Legs short, trigouate, broadest 

 in the female, margined, dilated ; femora not ciliated ; 

 anterior sinuated at the base, with lateral membranes along 

 their whole length ; tibiae dilated and spined ; tarsi with 

 the basal joint of moderate length. Abdomen truncate at 

 the tip ; the sides of the apex greatly deflexed and gaping 

 below. Ovipositor boat-shaped, extending beyond the 

 extremity of the abdomen, and furnished with two long 

 curved filaments. 



1. (448.) Extatosoma tiaratum. 



Mas. Luteo-viridis ; mesothorace autice angustato, spinis 

 duabus ; tegminibus areaque costali alarum viridibus, ul- 



