1902. ] SPIDERS FROM BORNEO AND SINGAPORE. 235 
and though the markings do not correspond accurately with those 
of the model, a general resemblance is produced. The head is 
orange, the prothorax is black with large orange blotches, the 
tegmina are black with an orange spot at the base of each, 
corresponding to a similar spot at the base of each elytron of the 
beetle, and with an orange fascia about the middle, corresponding 
toa broad orange spot in a similar position on each elytron of 
the beetle. The legs are banded with orange and black (compare 
Plate XIX. figs. 7 & 8). The mimic is met w ith: amongst herbage in 
jungle, and all the examples of the somewhat common ‘* Bombar- 
dier” that I have met with were taken in the same environment. 
The powerful jaws of the larger Gryllacrides furnish possibly an 
eflicient protection against the attacks of vertebrate enemies, 
such as small birds, lizards, and frogs, but im so small a species as 
this the resemblance to a beetle c: upable of discharging a scorching 
jet of formic acid vapour must be a far more efficient means of 
protection. 
. Mimic. Noy. gen., nov. sp. vicinissima Gammarotettigi. 
Plate XXIII. fig. 34. 
Model. Coccinellide. Plate XXIII. fig. 30. 
In February 1901 the Museum collectors brought in a small 
Locustid of a brilliant vermilion colour spotted with black. When 
the insect was resting the head was bent downwards and almost 
concealed by the large prothoracic shield, the abdomen was 
strongly curved downwards and the legs were drawn close up 
to the body, the long hind tibize being bent up under their 
femora: in this attitude the resemblance of the insect to a black: 
spotted red “ladybird” of a convex shape, e. g. Caria dilatata 
(Fab.), was most striking (compare Plate XXIII. figs. 30 & 34), 
The eyes ave intense black; the large prothoracic shield has three 
black spots, one central, the others lateral; the segments of the 
abdomen bear each a small dorsal black spot, decreasing in size 
posteriorly ; the fore- and mid-femora bear outwardly one con- 
spicuous spot, whilst the hind-femora have two such spots. 
When touched, this little Locustid did not leap away, as might 
have been expected, but kept perfectly still, and if further 
irritated it simply rolled off the surface on which it was resting 
and assumed a death-like attitude on the ground below, thus 
simulating very perfectly the habits of a Coccinellid. 
I have to thank the distinguished orthopterist Brunner y. 
Wattenwyl for reporting on this Locustid and the Gr vilacris. 
Ii. NEUROPTERA AS MIMICS. 
Mimic. Mantispa simulatrix (McLachl.). Plate XIX. fig. 23. 
Model. Sracon sp. Plate XIX. fig. 22. 
This case offers an instance of the distastefulness of the 
Hymenoptera Parasitica, a group mimicked also by insects 
Le], 
