i86 FAMILY CLERIDAE 



The following predaceous members of the family have been under 

 investigation. 



TiLLUS. 



Tillus notatus, Klug. 



Reference. — Klug. Mon. Abhandl. Berl. Acad. p. 276 (1842). 



Habitat. — Bengal and United Provinces. 



Habits. — The beetle enters the tunnels of the bostrychid bamboo-borers 

 Dinodents viinutus and D. pilifrons, and feeds upon their larvae. In May 

 1903, at the Indian Museum in Calcutta, I fed the beetles on the grubs of 

 D. ininiitus, which they devoured in numbers. The investigations and 

 observations made that year did not show that the clerid beetles feed upon 

 the bostrychid imagos, although the clerid grubs feed upon those of the 

 beetle borer (see p. 139 and pi. ix). I have also taken the insect in the 

 tunnels of Diiioderos pilifrons in bamboos in Northern India, where it was 

 engaged in feeding upon the larvae of the bamboo-boring beetle (see p. 133). 



Tillus ? sp. 



Habitat, — Goalpara, Assam. 



Habits. — I took a specimen of this small insect on the grass-reed walls 

 of one of the forest rest-houses in Goalpara, in Assam. The insect is 

 possibly predaceous upon the Dtnodenis beetles which infest the walls 

 and roofs of these bungalows. 



Thanasimus. 

 A species in this genus takes the place in the Himalayan coniferous 

 forests of the Clems form i car ins well known to German forest officers. 



Thanasimus himalayensis, Stabbing. 



References. — Stebbing, Jour. Asiatic Soc. Bengal, Ixxii, pt. ii,p. 105(1903); Depart. Notes, i, p. 213. 



Habitat. — North-West Himalaya. 



Habits. — ^Predaceous in both larval and beetle stages on the following 

 scolytid and platypid bark- and wood-borers in the Western Himalaya 

 {vide p. 508, etc.) : — 



Scolytidae. 

 Bark-borers: Polygraphus nuijor, Stebbing; Polygraphiis piiii, Steb- 

 bing; Toniicus ribbentropi, vStebbing ; Toniicus loni^ifolia, Stebbing; 

 Pityogenes coniferac, Stebbing ; Scolytus major, Stebbing ; Scolytus minor, 

 Stebbing. 



Wocd-borers : Rhyncholus himalayensis, Stebbing (Cossininae) ; Hylastes 

 himalayensis, Stebbing. 



Platypidae. 



Wood-borers : Crossotarsns coniferae, Stebbing ; Crossotarsus fairniairei, 

 Chap. ; Platypus biformis. Chap. ; Diapiis impressus, Jans. 



