the OrthojJtera in the British Museum. 173 



Pachyphymus, gen. nov. 



Resembling a member of Oedipodini rather than Calliptamini. 



Head strongly rugose. Face vertical ; frontal ridge between the 

 fastigium and median ocellum broad, parallel, convex, with the 

 margins raised; below the ocellum suddenly narrowed, sulcate, 

 still more narrowed towards the clypeus. Fastigium of vertex 

 strongly sloping, somewhat concave, slightly broader than long, 

 and distinctly broader than the frontal ridge between antennae; 

 its margins raised and connected with the margins of the frontal 

 ridge. Occiput with radial postocular ridges. Pronotum rugose, 

 very much alike in its general shape to that of species of TmetMs 

 of the group T. gibber St. ; strongly compressed laterally, especially 

 in prozona, which is distmctly shorter than the metazona; its 

 upper surface strongly tectiform, with median keel crested, in 

 prozona dissected in two teeth, in metazona strongly convex and 

 as high as in prozona; hind angle acute; its lateral margins 

 concave. Lateral lobes of the pronotum distinctly higher than 

 long, impressed before the middle; fore margin S-shaped; fore 

 angle obtuse, rounded; lower margin with a very obtuse and 

 broadly rounded angle before the middle ; hind angle a little more 

 than 90°, widely rounded; hind margin slightly convex, oblique. 

 Prosternal tubercle with the base very broad, low (scarcely higher 

 than broad), slightly transverse, thick, with the apex very obtuse. 

 Mesosternal lobes twice as broad as they are long ; their interspace 

 subequal to one of them. Metasternal mterspace one half again 

 as broad as long. Elytra coriaceous, scarcely transparent even in 

 the apical half. Wings strongly infumate, with the inner disc 

 coloured. Hind femora rather narrow, gradually narrowed apically ; 

 upper keel in the basal half strongly convex. Hind tibiae with 

 7 outer and 9 inner spines; no outer subapical spine; all spurs 

 very feebly bent; the inner spurs scarcely longer than the outer 

 ones. 



Genotype : Calliptamus cristulifer Serv. 



C. cristulifer is such a striking insect that it undoubtedly 

 represents a genus distinct from any one known hitherto, 

 and somewhat related, probably, to Acorypha Krauss 

 and Acoryphella G.-Tos. Its proper systematic position 

 cannot be defined until the male is known. 



1. Pachyphymus cristulifer (Serv.). 



1839. Cdliptamus cristulifer Serville, Ins. Orth., p. 692, 

 no. 8. 



