and Sjtecies of Phytophagous Beetles. 385 



boundary of a deep channel on the cheek, in which lies the 

 basal joint of the antenna ; mandibles in the same sex large, 

 curved, and armed on the upper surface at the base with 

 a large, flattened, acute horn, which curves obliquely 

 upwards and inwards on the face of the clypeus ; mandibles 

 in the female normal ; antenna3 rather longer than the thorax, 

 five outer joints black. Thorax twice as broad as long ; sides 

 obliquely converging and slightly rounded from the base 

 towards the apex, more quickly rounded near the latter ; basal 

 margin distinctly bisinuate on either side, median lobe pro- 

 duced, nearly rectangular; upper surface impressed with oblong 

 or elongate punctures, interspaces here and there longitudinally 

 strigose ; disk often stained with rufous, extreme basal margin 

 edged with black. Scutellum ovate, rounded at the base, its 

 apex acuminate. Elytra rather deeply punetate-striate, inter- 

 spaces plane, very faintly convex near the apex ; disk of each 

 elytron more or less stained with fuscous ; extreme basal and 

 sutural margins narrowly edged with piceous. 



Ditropidus subcylindricus. 



D. subelongatus, subcylindricus, fulvus, nitidus ; subtus niger, fulvo 

 variegatus, pedibus fulvis ; thorace margine basali, lateribus 

 angustis et disco autico, scutello elytrorumque basi, linea laterali, 

 sutara plagaque commiini deltoidea, ad basin adfixa, nigris; 

 thorace teniiissime punctato ; elytris tenuitcr punctato-striatis, 

 punctis elongatis ; interspatiis planis, ad latera leviter convexius- 

 culis. 



Var. A. Thorace (margine basali excepto) toto fulvo, elytrorum 

 margine basali anguste nigro, sutura piceo marginata. 



Long. Ij-lf lin. 



Hah. Western Australia. 



Head clothed with adpressed white hairs ; vertex and front 

 minutely punctured, impressed with a fine longitudinal groove, 

 the latter sometimes with a deep fovea ; clypeus transverse, 

 rugulose, its upper margin very obtusely angled ; eyes widely 

 separated ; five outer joints of antennas thickened, longer than 

 broad, their apices stained with piceous. Thorax scarcely twice 

 as broad as long; sides obliquely converging from the base to 

 the middle, thence rounded and converging to the apex ; basal 

 margin distinctly bisinuate on either side, median lobe mode- 

 rately produced, obtusely angulate ; above subglobose, very 

 faintly punctured ; hinder margin narrowly edged with pice- 

 ous. Scutellum ovate, its apex acute. Elytra parallel, finely 

 punetate-striate ; interspaces plane, faintly and transversely 

 rugulose, those near the outer margin slightly convex. 



Ann. & Mag. N. Hist. Ser. 4. Vol. xx. 27 



