246 THE ENTOMOLOGIST. 



sund, 1909, p. 8) tells us that Prof. Stange, who " rightly holds 

 variata and obeliscata to be different species, found larvae of the 

 latter on Juniperiis and Larix, as well as on pine " ; while Pmus 

 picea would appear to be shared as an occasional substitute 

 food-plant by both species (c/. Hoffmann, Stett. Ent. Zeit. xlix. 

 172 for variata; Barrett, Lep. Brit. Isl. viii. 356 for obeliscata — 

 "rarely"). 



Postscript. — Since writing the above I learn that Major 

 Eoberteon has also found the larvae of T. variata on two other 

 conifers, the Silver Fir {Abies pectinata) and the Norway Spruce 

 {Picea excclsa). In a letter dated August 28th, he writes, "I 

 have four or five pupae of T. variata, 2nd brood, and other larvae 

 sleeved out seem to be feeding up rapidly." 



" WHERE WALLACE TROD " : BEING SOME ACCOUNT 

 OF AN ENTOMOLOGICAL TRIP TO MT. SERAMBU, 

 SARAWAK, BORNEO. 



By J. C. MouLTON, B.Sc, F.L.S., F.Z.S., F.E.S., 

 Curator of the Sarawak Museum. 



(Plates V. & VI.) 

 (Concluded from p. 217.) 



The fortnight on the mountain went by all too quickly, as 

 most entomological expeditions only too often do. If fine and a 

 promising day generally, we would climb to the top and wait on 

 a small cleared spot up there for insects to visit us, but generally 

 clouds and rain developed, preventing any big captures there, 

 although such spots are generally most productive in Sarawak. 

 The clearing round our hut produced most insects, but we also 

 tried the lower slopes of the mountain with varying success. At 

 night time we were kept busy by the improvised light-trap, 

 which we were told afterwards was easily visible from Bau, some 

 four miles down the valley to the south-west of us ; the light in 

 our hut also attracted many moths. Sugar was tried, but with- 

 out success. In our day at the birds'-nest caves on Mt. Jibong 

 we were astonished at the numbers of cockroaches swarming on 

 the sides of the caves and in the soft guano which filled the 

 floor. These proved to be two species — Ischnoptera cavernicola, 

 Shelford, and Periplaneta australasia, Fab. The place seemed 

 alive with them, and, together with hundreds of screeching 

 swifts, whirring bats, and the twinkling lights of the Dayaks, 

 whom we could just discern high up in the roof above us, cling- 

 ing to a frail bamboo scaffolding while they took the nests which 

 are so highly prized by the Chinese epicure, formed an interest- 

 ing scene not easily forgotten. 



