240 IN skits ABBOAD. 



There is a family of Longicorn Beetles in which a portion of 

 the antennae is covered with prickles, and which are therefore 

 called Batoceridas, i.e. thorny-horned Beetles. On Plate IV. Pig. 

 2, is shown one of these insects, Batocera Cclcbiana, which, as 

 its name implies, inhabits the Celebes. Being a large species, 

 it shows well the characteristic spikes with which the very long 

 second joint of the antennas is aimed. The usual spikes at tin- 

 sides of the thorax are well developed, and there is a short 

 sharp spike on each of the shoulders of the elytra. 



The general colour of this Beetle is black, but parts of it are 

 covered with a secondary coating of white or red, arranged as 

 may be seen by reference to the plate. On the upper part of 

 the thorax are two large patches of a rust-red, looking indeed 

 very much like splashes of actual rust. 



The surface of the elytra is covered with rounded tubercles of 

 various sizes, the tubercles themselves being shining black, and 

 the space between them tilled with yellow down. On each of 

 the elytra are four white spots. One large irregularlys-haped 

 spot is on the middle of each elytron, sometimes being nearly 

 oval, and sometimes having a sort of curved tail like a comma. 

 Above it is a small circular spot, below it a similar spot, and 

 near the tip of the elytra another, but much smaller mark. All 

 these marks look, when examined with a low magnifying power, 

 as if they were made of plaster of Paris spread thinly on the 

 surface, and are full of tiny cracks just like those of the plaster 

 when it has been exposed to moisture. "When a tolerably high 

 power is brought to hear on these red and white spots, they are 

 seen to be formed by a number of oblong scales laid as regularly 

 as the tiles of a house, instead of being flung loosely over the 

 surface like the hair-like scales of the under parts of the body. 



Beneath, the insect is black, thickly sprinkled with yellow 

 down, and on each side of the thorax, just below the elytra, is a 

 broad white stripe, very clearly defined and with jagged edges. 



Among the many species of this genus we may mention 

 Bntoccra Uma of tin' Aril Islands. This is a very much larger 

 Beetle than the preceding, and much blacker. The antennae are 

 remarkable for having the spikes on every joint except the 

 two last, which are very slender and delicate. The whole of the 

 surface of the elytra is covered with tubercles. 



One of the must variable species is Batocera Tlwmsonii of 



