No. 1.] E. P. Stebbing — On the Bostrichidae of the Indian Region. 41 



gives it the appearance of being bifurcated. The punctuation of the 

 apical declivity of the $ may be greatly or less well-marked and 

 dense. 



$ are to be found in which the upper inner callosity of the 

 declivity is replaced by a costiform tubercle very short but pointed 

 and well-marked. These $ resemble greatly certain <J. 



Larva. — White, curved, with brown-black head and three pairs 

 of jointed legs. 



Distribution. — India: Sutlej ; environs of Simla ; British Bhutan ; 

 Maria Basti ; Calcutta (mini); Calicut (Madras); Bhamo; Tharra- 

 waddi. 



Coll. Ind. Mus. Calc. — Calicut (Madras) ; Coll. Steb.— Andamans 

 (received from Br. Mus.), Singbhum (ChotaNagpur), Calicut, (Madras). 



Life -History,, — The beetle has been reported as tunnelling into 

 and laying its eggs in the wood of Bombax malabaricum at 

 Calicut. As this wood is used for tea boxes by planters on the 

 west coast of Madras, the damage caused is considerable. The 

 adult insect is to 1 e found on the wing in May-June. 



Group III. — Front not at all depressed, epistome not swollen, the 

 profile of the upper part of the head describing in both sexes a regular 

 curve. Frontal clypeal suture well marked in the middle. Eyes very 

 slightly turned upwards behind. Posterior angles of the prothorax 

 straight or obtuse, nearly always pointed at the top and sometimes a 

 little lobed in the $ . Apical edge of the elytra not reflexed. 

 Second and fifth tarsal joints of posterior legs subequal. 



£. Anterior angles of the prothorax prolonged into upturned 

 horns. The centre of the posterior surface of the pronotum covered 

 with scales. Apical declivity of the elytra furnished on each side 

 with a marginal apophysis. The pleurites of the last abdominal seg- 

 ment more visible. 



? . Anterior angles of the prothoiax furnished with only one erect 

 large tooth. Centre of the posterior surface of the pronotum covered 

 with rasp-like granulations. Apical declivity of the elytra showing 

 on either side a marginal callosity. 



One species only — H. hamatipennis. 



Heterobostrichus hamatipennis, Lesne. 



Lesne, 1895, An. Fr., 1 895, p. 873 ( $ ? ). An. Fr., 1898, p. 562 ; 

 niponensis, Lewis, 1896. An. Nat. Hist. S6r. 6, vol. XVII, p. 339 {$). 



Frontal clypeal suture strongly depressed in the middle. Eyes 

 slightly inclined behind. S with prothoracic horns. 



Long. 9 — 15^ millim. Parallel, fairly large, robust ; dark brown 

 with thighs at times reddish. Upper part of the body covered with a 



