"where WALLACE TROD." 251 



this kind instead of the desired moths, hit one with a stick, burst- 

 ing the bladder-Hke abdomen, whereupon some fluid squirted out 

 and into his eye ! He had a very painful two days before his 

 eye got all right again. A few earwigs attended the sugar 

 repast ; they were Allodahlia scahriuscula, Serv., Corclax forci- 

 patus, de Haan, Timomenus vicinus, Burr, and Opisthocosmia 

 centurio, Dohrn. — all common species in Sarawak. 

 Sarawak: April, 1912. 



Explanation of Plates V. & VI. 



PI. v., fig. 1. — Mr. H. W. Smith and Dayaks on the actual site occupied hy 

 Wallace in 1856. Note two posts ol house in foreground, and the 

 density of jungle grown up since the house was last occupied. 

 ,, fig. 2. —The same spot after being cleared by Dayaks. Our hut in 

 process of erection. 

 PI. VI., fig. 3. — Our improvised moth-trap. Collector (Sea-Dayak) standing 

 with Land-Dayak boy seated in front. 

 ,, fig. 4. — The huge rock (referred to by Wallace, St. John, and Beccari) 

 under which we obtained water for drinking and bathing purposes'. 



APPENDIX. 



By W. L. Distant. 



Mr. Moulton has asked me to identify the four following 

 species of Rbynchota which he collected on this expedition, two 

 of which are apparently undescribed, and the types are now 

 in the British Museum. 



Fam. PENTAT0MID.E. 



Dalpada trimaculata. 



Pentatoma 3-macnlata, Westw., in Hope Cat. i. p. 41 (1837). 



Already recorded from Java, Sumatra, Borneo, and 

 Philippines. 



Hippotiscus scutellatus, sp. n. 



Body above ochraceous, thickly darkly punctate ; apex of scutellum 

 cordately ivory white, inwardly margined with black ; body beneath 

 pale ochraceous, the segmental incisures, spiracles, and a transverse 

 line beneath them dark castaneous ; presternum punctured with cas- 

 taneous ; legs darker ochraceous ; head short, broad, almost shorter 

 than broad between the eyes, rounded at apex, the margins mode- 

 rately laminately reflexed, the lateral lobes slightly longer than the 

 central ; first joint of antennae about reaching apex of head, second 

 longer than third, fourth and fifth longest and subequal, first, second, 

 and third joints ochraceous, fourth and fifth dark castaneous ; rostrum 

 castaneous, not extending beyond the intermediate coxae ; pronotum 

 with the lateral margins rounded and laminate, anterior angles ob- 

 tusely angulated, basal angles rounded and subprominent ; mem- 

 branal veins simple ; abdomen not spined at base, but second segment 



