62 



CATALOGUE OF ORTHOPTEROUS INSECTS. 



7. (170.) Ceroys Cohunbiiia, Westw. 

 Plate XXIV. fig. 1. 



Obscure fuscus, opacus, luteo parum varius, brevior, 

 subdepressus ; meso- et metathorace vage granulatis ; ab- 

 domine linea tenui media longitudinali,; aliisque lateralibus 

 curvatis elevatis, segmentis apicalibus in medio carinatis ; 

 pedibus gracilibus, femoribus tibiisque tuberculatis ; oper- 

 culo apice fisso (foem.). 



Long. corp. lin. 22^; ant. lin. 13 ; proth.lin. If ; mesoth. 

 lin. 5J-; metath. lin. 3f ; abdom. lin. 7 + lin. 3=lin. 10. 



Hab. In Columbia (D. Gaudichaud). Mus. Saunders. 



This species, of which I have seen only a single female 

 individual, is entirely of a dull brown colour, slightly varied 

 with luteous ; it is finely rugose, with slender elevated lines 

 and minute granulations wide apart. The head is elon- 

 gated behind the eyes, with a dark mark down the centre 

 of the crown. The antennae are long and slender, the 

 basal joint oval and depressed. The mesothorax is mode- 

 rately elongated and gradually widened, with a raised cen- 

 tral line extending also along the metathorax, which is 

 gradually wider than the mesothorax, and about three-fifths 

 of its entire length ; its hinder division is short, with a 

 raised, slightly curved line on each side. The abdomen is 

 not longer than the thorax ; it is wide and subdepressed, 

 with the terminal segments gradually attenuated ; on either 

 side of the slightly raised median line is a curved line simi- 

 larly raised, and another nearer the lateral margins scarcely 

 defined. The three terminal segments are strongly cari- 

 nated ; the seventh joint considerably longer than the pre- 

 ceding ; the eighth and ninth of equal length, each being 

 nearly equal to the sixth. The operculum is swollen at 

 its base ; it extends a little beyond the extremity of the 

 abdomen, and is deeply emarginate at its tip. The legs 

 are slender ; the fore femora with the upper edge dilated ; 

 the four posterior femora with several small rounded lobes 

 in pairs upon the upper edges of the thighs ; the tibiae also 

 slightly and irregularly lobed ; the tarsi are short, with the 

 basal joint not longer than the three following united. 



Plate XXIV. Fig. 1. The female, of the natural size. 1 a. 

 The terminal segments of the abdomen seen laterally, with 

 the extremity of the operculum seen from beneath. 



Genus 11. RHAPHIDERUS. 



Rhaphiderus, Serville. 

 Acanthoderus, p., G. R. Gray. 



Body of the male long and slender, of the female broad, 

 subconvex. Head larger than the prothorax, unarmed. 

 Ocelli wanting. Antennae long and slender. Prothorax 



and disc of the mesothorax spined ; sides of the latter and 

 of the metathorax swollen in the female, and spinulose. 

 Metathorax of the male much dilated above the insertion 

 of the hind legs. Abdomen of the male long and slender, 

 of the female broad, and gradually narrowed to the tip. 

 Fore legs long and simple ; hind legs with the femora and 

 tibiae more or less spined ; the middle ones not foliaceous. 



1. (171.) Rhaphiderus scabrosus. 

 Elongatus, laevis, viridis, rufo-varius, fcemina pallidior, 



vitta longitudinali flava ; capite postice obscurius lineato, 

 pro- et mesothorace disco spinulosis, spinisque lateralibus 

 meso- et metanoti ; abdominis lateribus in fcemina mem- 

 brana tenui marginatis ; femoribus quatuor posticis tibiis- 

 que duabus posticis spinosis. 



Long. corp. maris, unc. 3 ; anten. lin. 20 ; proth. lin. 2 ; 

 mesoth. lin. 6\; metath. lin. 6J ; abdom. lin. 14 + lin. 4 

 =lin. 18. 



Long. corp. feem. unc. 4^ ; proth. 2J ; mesoth. lin. 7i ; 

 metath. lin. 7\; abdom. lin. I7i + lin. 5=lin. 22-|-. 



Bacteria scabrosa, Percheron in Gue'r. Icon. R. An. Ins. 

 pi. 53. {.4 3. 



Griffith, An. K. pi. 110. f. 4. 



G. R. Gray, Syn. Phasm. p. 14 (Acanthoderus scabro- 

 sus, mas.). 

 Serville, H.n. Orth. p. 246 (Rhaphiderus scabrosus). 



Hab. Isle de France. S ? in Mus. Oxon. (Hopeiano). 



B.M. 



Obs. The female bears a strong general resemblance to 

 Craspedonia undulata, Westw. Arc. Ent. i. pi. 8, and ii. 

 p. 49 (Diaph. gibbosa, W. olim, nee D. gibbosa, Burm.) ; 

 it is, however, much smaller and destitute of rudimental 

 wing-covers. 



2. (172.) Rhaphiderus Dnmerilii. 

 Mesothorace scabro ; femoribus quatuor posticis angu- 



latis, spinosis ; tibiis posticis dentatis. 

 Long. corp. unc. 1\ ; anten. lin. 22. 



Phasme geant, Dumeril, Consid. Ins. pi. 23. f. 3. 

 Acanthoderus Dumerilii, G. R. Gray, Syn. Phasm. p. 14. 

 Hab. ? 



Genus 12. EURYCANTHA. 



Eurycantha, Boisduval, G. R. Gray. 

 Karabidion, Montrouzier, in Ann. Sci. de Lyon, 2nde serie, 

 torn. vii. l rc partie, p. 81. 



Head quadrate. Antennae rather short, slender, multi- 

 articulate ; the basal joint large and depressed. Thorax as 

 long as the abdomen, cylindrical. Metathorax shorter than 

 the mesothorax, both spined at the sides. Abdomen short, 



