1902.] SPIDERS FEOM BORNtEO AND SINGAPORE. 247 



(fig. 5). The model may be a male or female, as in such small- 

 sized specimens the male does not bear the long elytral processes 

 characteristic of large or medium-sized varieties, the elytra are 

 merely produced into short points ; these short points are mimicked 

 by the Longicorn very exactly. 



Stegenibs dactylon (Pasc.) of the subfamily ^^wmoe is also a fair 

 mimic of a large- sized Dmrus sylvanus (compare figs. 8 & 4 on 

 Plate XX,). As in Mgoprepis insignis, the body is blackish- 

 brown streaked with a pale ochreous pubescence (fig. 8 a) ; the 

 basal two-thirds of the antennae are clothed with a dense black 

 plumosity ; the remaining joints are ochreous and pale in colour. 

 Elelea concinna (Pasc), one of the il/esosw^ce, also mimics in the 

 same manner a small Brenthid, Arrhenodes sp., as previously 

 noted by Wallace, who I'emarks that it carried its antennae 

 " straight and close together, appearing like a Brenthid." 



Another of the Mesosince — Zelota spathomelina (described by 

 Mr. Gahan in Appendix I. to this memoir) — mimics an Endo- 

 mychid, a species of Spathomeles near turritus (Gerst.) (compare 

 figs. 57 & 56, Plate XXIII. ). The model, which is not represented 

 in the British Museum collections, is pitchy-black with two 

 reddish spots on each elytron ; springing from each elytron is 

 a stout spine directed somewhat forwards, foi-ming a very 

 efficient defence against the attacks of enemies. It is not 

 improbable, moreover, that this beetle is still further protected 

 by some distasteful properties, which, at any rate, are possessed 

 by the species of the genus JHumorphus of the same family, 

 an assemblage of black or purplish insects with conspicuous 

 yellow spots. All of these possess a very pungent though not 

 altogether disagreeable odour, whilst many exude a yellowish 

 acid fluid when seized. The mimic of the Sp)athomeles is 

 coloured in much the same way as its model : on each elytron 

 there is a mamilliform prominence, from which springs a pointed 

 tuft of delicate hairs, which is curved slightly forwards. These 

 tufts so closely resemble the formidable spines of the model that 

 a near inspection with lens and finger is necessary to reveal the 

 deception. Another Endomychid beetle, Amphistemus mucro- 

 natus (Gerst.), is also a probable model of the same species of 

 Longicorn. 



The aberrant Tracliystola granulosa (Pasc), which was placed 

 provisionally in the subfamily Dorcadionince, with its deeply 

 punctured and granulate elytra, presents the general appearance 

 of a lai'ge black Curculionid, such as Sipahos gramdatus (Fab.), 

 without, however, exhibiting any very highly modified mimetic 

 characteristics, as in the species previously discussed. 



Daphisia pidchella (Pasc.) is a highly conspicuous little beetle 

 of the subfamily Phytceciince, and is almost indistinguishable fi-om 

 two species of Olerid of the genus CalUmerus (compare fig. 55 

 with figs. 53 & 54 on Plate XXilL). 



[The resemblance of the Cleridae as a group to widely difFerejit 

 Coleoptera and to insects of other orders is well knoAvn. Looking 



