320 Mr. C. O. Waterliouse's descriptions of new 



CEKAMBYCID^.. 



Chlidonin-^. 



Chlidones. 



Head distinctly broader than the thorax, nearly round, 

 evenly arched from the neck to the clypeus, cheeks ex- 

 tremely short. Eyes very widely separated, not very 

 finely granulated, semicirciilarly emarginate above. An- 

 tennas placed in a pit in the emargination of the eye (the 

 margins of this pit not raised above the level of the fore- 

 head), extending to the middle of the elytra, slender; the 

 basal joint elongate, subcylindrical ; the 2nd joint very 

 small, the 3rd as long as the 1st, but much more slender, 

 a little swollen at the juncture with the 4th, which is of 

 the same form and length ; the 5th is a quarter longer ; 

 the 6th to 9th joints are a little shorter than the 3rd, not 

 quite so cylindrical; the 10th and 11th joints are a little 

 shorter. Thorax narrower than the head, twice as long 

 as broad, somewhat flattened above, moderately constricted 

 before the middle and before the base. Scutellum parallel 

 at the sides, rounded at the apex. Elytra a little broader 

 than the head, but rather narrowed in the middle, flat 

 above at the base, square-shouldered, declivous at the 

 apex. Prosternum rather narrow, regularly arched ; 

 mesosternum between the coxas broader than long, flat, 

 but sloping a little anteriorly ; metasternum about as long 

 as broad, its parapleurte very narrow, gradually narrowed 

 to the apex, concave. Legs very long, the femora very 

 gradually and slightly thicker in the middle. Tarsi 

 slender, the basal joint of the intermediate pair longer than 

 the three following taken together.* Abdomen in the 

 female gradually acuminate to the apex, the intercoxal 

 process narrow, acuminate, the basal segment long, the 

 following segments decreasing in length. 



This genus is one of the many remarkable forms occur- 

 ring in Madagascar, for which it is extremely difficult to 

 find a satisfactory position. Its general appearance is 

 something between Cylindrepomus {Lamiidce) and Scle- 

 thriis, but its affinities appear to be with the Tillomor- 

 pliincB, or Clytince, and I propose to place it after this 

 latter family. 



* The posterior paii- are wanting. 



