1902.] SPIDERS FROM BORNEO AND SINGAPORE. 265 



VI. RHYNCHOTA AS MIMICS. 

 a. Ehynchota Hemiptera. 

 i. Mimic. A Hedioviid, sp. 

 Model. Bracon, sp. 



The bug has the elytra, wings, and dorsal surface of the body- 

 reddish ochraceous as in certain common Braconidae ; the abdomen 

 beneath is white ; the apex of the coriaceous pait of the elytra 

 is black, thus resembling the black stigma on the fore wing of 

 the model ; while both elytra and wings are suffused with fuscous 

 as in the model. So perfect is the resemblance between the two 

 species that the bug was placed in a cabinet together with several 

 other Hymenoptera, and the mistake was only discovered quite 

 recently whilst attempting to arrange the museum collection of 

 Braconidte. 



Another species, probably of the same genus of bug, mimics 

 another similarly coloured species of Bracon in the same manner 

 as above described. 



[See also under section Convergent Groups for other examples 

 of mimetic Hemiptera.] 



/3. Rliynchota Homoptera. 

 ii. Mimic. Issus hruchoides (Wlk.). Plate XIX. fig. 10. 

 Model. Alcides, sp. (Gurculionidae.) Plate XIX. fig. 9. 



This remarkable little Homopteron, one example only of which 

 is in the British Museum from Sumatra, occurs not uncommonly 

 at Kuching on fallen logs or on living wood, whilst the Weevil 

 is frequently found beneath the bark of fallen logs, sometimes in 

 the very logs on the surface of which is found the mimic. 



The whole appearance of the mimic with its hard convex elytra 

 and deceptively powerful legs is very weevil-like, and the resem- 

 blance was evidently noted by the describer. The fore legs are 

 much flattened and in side-view con-espond closely in appearance 

 to the powerful fore legs of the Alcides (compare figs. 9 & 10, 

 Plate XIX.). 



VII. SPIDERS' AS MIMICS. 



i. Mimic. Cyrtarachne conica (0. Pickard-Cambridge). 

 Model. A mollusc. 



The abdomen of this Spider is many times larger than the 

 cephalotliorax and is dorsally produced into a cone, which appears 

 as if tilted backwards. The colour of the abdomen is creamy or 

 yellowish white, marked with fine black and greenish lines and 

 mottlings, arranged in a somewhat concentric manner so as to 



1 The Spiders here noted were described in P. Z. S. 1901, i. p. 11 et seq. pi. v. 

 Cyrtarachne conica was wrongly recorded as occurrinjj iii Singapore. 



