PLOC.EDEBUS. 121 



or spined at the apex, the third and fourth joints sometimes also 

 angulate or spiuose at the apex. Prothorax transverse, armed 

 with a spine or prominent tubercle on each side, corrugate above. 

 Elytra truncate at the apex and usually dentate or spined at the 

 angles. Legs rather long, femora laterally compressed ; first 

 joint of hind tarsus shorter than the next two united. Acetabula 

 of front coxa? angulate on the outer side and almost closed poste- 

 riorly. Prosternum raised between the coxae, vertical or almost 

 vertical posteriorly, and truncate or tuberculate at its lower angle. 



I. Prothorax with a strong, sharp, and slightly recurved spine on 

 each side. 



116. Plocaederus ferruginous, Linn. (Cerambyx) Syst. Nat. 12th ed. 



p. 6:26 (1766). 



Cerambyx gigas, Fab. Mant. Ins. i. p. 132 (1787). 

 Cerambyx ferrugineus, Fab. Ent. Syst. i, 2, p. 256 (1792) ; Oliv. 



Ent. i'v, no. 67, p. 9, pi. 18, fig. 134 (1795). 

 Lamia umbrina, Dalm. in Schoen. Sun. Ins. i, 3, Append, p. 161 



(1817). 

 Hanimaticherus nitidus, White, Cat. Col. B. M., Longic. p. 127 



(1853). 



Cerambyx versutus, Puscoe, Trans. Ent. Soc. (2) v, p. 20 (1859). 

 Plocaederus ferrugineus, var., Gahan, A. M. N. H. (6) v, p. 51 (1890). 



Eeddish brown, the head and thorax dark brown or almost 

 black, the sides of the breast and the greater part of the antenna? 

 also, inclining to a dark brown colour ; clothed with a yellowish- 

 grey pubescence which is somewhat longer and denser on the 

 underside of the body, but very short and faint on the upperside, 

 especially on the elytra. Antenna? of d twice as long as the 

 body, very minutely granulated ; joints fifth to tenth angulate in 

 front at the apex ; antennae of $ scarcely longer than the body, not 

 granukte, joints fifth to tenth more distinctly augulate than in the 

 c? . Prothorax armed with a strong, sharp, slightly recurved spine 

 on each side, strongly and irregularly corrugated above. Elytra 

 very finely and closely punctulate all over, not less finely near 

 the base than towards the apex ; very faintly pubescent at 

 the sides and almost bare of pubescence on the disc; apices 

 dentate at the suture and somewhat acute at the outer angles. 



Length 26-45 ; breadth 8-15 mm. 



Hah. Ceylon and Trivandrum. 



Var. niger, Grahan, agrees with the typical form except in the 

 colour of the elytra ; these are very dark brown or almost black. 



Hob. Bengal. 



117. Plocaederns obesus, Gahan, A. M. N. H. (6) v, p. 51 and (6) vi, 



p. 259 (1890). 



Plocederus pedestris, Cotes (nee White], Ind. Mtis. Notes, i, no. 2, 

 pi. v, fig. 4. 



Of a reddish-chestnut or testaceous colour, clothed with a short 



