1922.] 139 



ORCHAMUS BELLAMII, sp. n., A NEW PAMPHAGID GEASSHOPPER 

 FROM THE CANARY ISLANDS. 



BY B. P. rTAEOY, F.E.S, 



9 . Auteuuae 10-jointed, witli the base dilated and triangular in transverse 

 section, longer than the liead and pronotuai together. Frontal ridge strongly 

 prominent and very deeply furrowed between the antennae, suddenly lowered, 

 feebly widened and shallowly inijiressed below them. Fastigium of the vertex 

 distinctly sloping, longer than broad, with the margins distinctly raised, sharp 

 and gx'auulose, continuous with the margins of the frontal ridge ; its surface 

 somewhat impressed, punctured ; a linear longitudinal carinula runs from the 

 occiput over the whole vertex, forming a narrow bifurcation at the apex of 

 the fastigium. Eyes strongly prominent, obliquely placed, somewhat higher 

 than the subocular distance ; the distance between the eyes is more than the 

 vertical diameter of an eye. Pronotum short, moderately compressed, rugu- 

 lose ; median keel tectiform, in profile obtusangularly arcuate, the highest 

 point being just before the middle of the prozona, while the keel is very low 

 in metazona and does not I'each its hind margin ; typical sulcus well expressed, 

 but cutting the median keel not very deeply ; prozona about five times as long- 

 as the metazona ; lateral lobes very uneven, with deep transverse sulci; their 

 lower margin straight, the fore angle 90'"', the hind one slightly more. Pro- 

 sternal tubercle rotundate-quandrangular, low, with the fore margin scarcely 

 raised, its surface rugulose, but not tuberculate. Elytra very short, exteriding 

 scarcely beyond the middle of the mesonotum, and almost linear. Tympanum 

 open, small. Hind femora very narrow, their exteruo-mediaii area being less 

 than twice as broad in its middle as the supero-externa ; the upper carina low, 

 densely granulose ; both lower and upper carinae of the externo-median area 

 granuloso-denticulate. Hind tibiae with 8-9 spines on each side. The 

 whole underside, sides and legs clothed with dense grey hairs. 



General coloration reddish -brown, with some parts creamy- white 

 Antennae brownish-grey, with large punctures and margins black. Face 

 and cheeks creamy-white, with dense and coarse red-brown puncturation, 

 which disappears in the upper part of the cheeks (?'. c. at the lower margin of 

 the eyes), which is smooth, creamy-white ; occiput and vertex red-brown, with 

 a creamy-white honeycombed net of carinulae, disappearing at the sides of the 

 occiput ; margins of the fastigium, as well as the median carina of the head 

 and two short lateral occipital carinulae, black or blackish ; the occiput 

 margined with black behind. Pronotum reddish-brown; sides of the lateral 

 keel creamy-white, with dense and coarse red-brown punctures ; lower half of 

 the lateral lobes also creamy-white, with scattered coarse blackish punctures ; 

 the crest of the median keel and series of small round spots along all the 

 margins, as well as some indefinite spots in the upper part of the lateral lobes, 

 black. Mesopleura and metapleura Avith dirty-white honeycombed sculpture. 

 Mesonotum, metanotum and abdomen from above red-brown ; mesonotum 

 indistinctly rugulose, with the fore lower angles smooth ; metanotum and 

 abdomen rugulose throughout, with a low granulose median keel, which is 

 blackish up to the end of the first tergite ; both mesonotum and metanotum 

 with a few small blackish marginal spots. Fore and middle legs creamy-ophite 



