No. 1.] E. P. Stebbin* — On the Bostrichid3e of the Indian Region. 33 



plainly visible and reddish or rufous in colour. Long hairs on the 

 under-surface of the tarsi are numerous. 



He'eromorphous ? : Forehead nearly plain or lightly gibbous 

 and deflexed at its anterior edge. Frontal clypeal suture well 

 marked. Prothorax smaller than in the <$ , truncate in front, its 

 outer angles not prolonged into horns. The marginal callosities of 

 the apical declivity of the elytra absent or only very slight. Fifth 

 apparent segment of the abdomen with a thick fringe of red 

 hair in the middle of the posterior edge. The long hairs on the 

 under side of the tarsi rarely present. 



Homeomorphous <J : Head and prothorax as in the heteromor- 

 phous $ . Elytra as in the heteromorphous $ . 



Homeomorphous ? : Anterior angles of the prothorax prolonged 

 into horns which are less well developed than in the Ijeteromor- 

 phous 6*. Otherwise resembles the heteromorphous ? . 



The members of this group appear to be confined to the warmer 

 parts of the Old World. 



8. Bostrichopsis parallela, Lesne. 



Lesne, An. Soc. Ent Fr., 1898, p. 534. 



Bostrichus parallelus, Lesne, An. Soc. Fr., 1893, p. 174. Steb. Dept. Not. Ins. 

 For. No. 2, p. 174. 



Dorsal punctures of the elytra well marked, becoming slightly 

 more dense on the apical declivity. The second joint of the posterior 

 tarsus is distinctly wider than the last. The deep punctures on the 

 dorsal surface of elytra often become elongated near the suture. In 

 the ? the forehead is finely and densely pubescent in the centre but 

 not gibbous. The apical declivity with a weak border becoming 

 more marked near the sutural angle. Length 6 — 15 millim. 



The prothorax is smaller than in (J; generally it is nearly square, 

 truncate and slightly sinuous on its anterior margin and the sides of 

 the body are parallel. But small ? exist also heteromorphous, of 

 which the body is shorter, not parallel, the prothorax rounded on its 

 edges and the elytra slightly widened behind. The punctuation of the 

 abdomen of these small ? is less dense than in the typical ? and 

 the anterior margin of their prothorax is at times slightly indented. 



Three kinds of 6* are present : first, the normal heteromorphous $ , 

 in which the anterior angles of the prothorax are prolonged into 

 horns which are curved downwards and have a glabrous outer sur- 

 face. In the elytra the apical declivity bears the four ordinary 

 marginal costiform callosities. On each side the lateral callosity 

 is conterminous with the lower border which is well marked as in B. 



D 



