67 



but in the writings of Latin authors ; yet Fabricius and Olivier give its derivation from 

 the Greek o-KaTTTw — to dig, which MacLeay doubts, considering it to be of Etruscan origin, 

 adding that it may have been obtained from the Greek o-Kapt^ao/tat — the verb 8ia(7KapL<f)rjaaL 

 being properly applied to the actions of animals which scratch or dig up the earth with 

 the claws. Pliny gave a description of the sacred beetle of the Egyptians under the 

 name Scarabmus ; and in later times Linnaeus applied it in a general way to the whole of 

 the Lamellicorn beetles, placing the gigantic horned species, at the head of the genus. 

 The Rev. J. G. Wood writes as follows : — " The Latin word Scarabseus is nothing but a 

 corruption of the Greek word Kapa(3o<; — a crab. It was also employed to designate the cuttle- 

 fish, on account of its mode of crawling, the name being composed of two Greek words, 

 signifying 'to walk on the head.'" By Aristotle, it is applied to an insect which is evi- 

 dently the stag-beetle ; but Linnaeus was the first who gave it to the ground-beetle, and it 

 has been so universally employed that it will continue to hold its place. 



It is possible that the name may have been applied to these beetles by Pliny, from 

 the fact that the female of the sacred Scarabseus, when it is rolling the balls of dung, in 

 each of which it has deposited an egg, to the place where it has dug its burrow, does so 

 by walking backwards and pushing the ball before it. Now from the size of the ball, 

 generally over an inch-and-a-lialf in diameter, it actually has almost to stand on its head 

 when it places its feet on the top to roll it. 



It would be impossible to do more, here, than mention briefly some of the most in- 

 teresting sub-families and species of this extensive family of insects, the members of which 

 exhibit such great variations in the form and arrangement of the various organs of the 

 body, although preserving a characteristic appearance, and conjoined with it the lamellate 

 antennal club and fossorial legs. 



They have been conveniently divided into three divisions by De Geer. 



1. Those which live upon or beneath the surface of the earth, or " ground beetles." 



2. Those which in the perfect state are found upon and devour the leaves of trees, or 

 " tree-beetles." 



3. Those which in the perfect state frequent flowers, or "flower-beetles." 



To the first group belong the most useful of insects, who in providing for the per- 

 petuation of their species, at the same time till and manure the soil and dispose of offen- 

 sive matter. This will be better understood by a glance at their life histories. 



In Ontario we sometimes meet with a fine ground beetle, named Ganthon Icevis, 

 Drury, which belongs to the same sub-tribe (Ateuchini) as the Egyptian Scarabseus, to 

 which it bears great resemblance. A noticeable feature of these insects is the length of 

 their hind-legs, and the proximity of the bases or coxae to the end of the body. This 

 peculiar structure is of particular service to them. Their mode of depositing eggs is very 

 remarkable. The female having discovered a deposit of fresh cow-dung, at once seeks for 

 a suitable place, and digs out a pit about 18 inches deep ; she then returns and gathers 

 together exactly so much of the material as will amply supply one grub with food, and 

 in the centre of this she deposits an egg. She then proceeds to form it into a round ball ; 

 at first it is quite wet and soft, but by turning her back to it she works it backwards, in 

 the hot sun-shine, by means of her long hind-legs, over dusty or sandy soil, and it gradu- 

 ally becomes rounder and harder, by taking up some of the dry dust as it goes along. 

 When she arrives at the hole, she previously prepared, if her ball is dry and hard enough, 

 she drops it in and covers it up ; but if it is not sufliciently hard, she takes it for another 

 short circuit, during which it picks up more dry dust and gains the required consistency, 

 and then brings it back to the hole and buries it. If the day is wet or even cloudy, 

 these insects will not work at all. Occasionally intervening objects render this task of 

 transportation exceedingly ditficult ; but she works away with the utmost patience and de- 

 termination, and is generally successful ; sometimes as a last resource when obstacles of unus- 

 ual magnitude have to be surmounted, she will call in the aid of one or two other beetles. It 

 is curious, too, how cheerfully they seem to work for each other, and although it is almost 

 impossible to induce one of these insects to abandon the ball which contains her egg, yet 

 if when two females are engaged in depositing eggs at the same time, the balls are changed, 

 neither seems to be aware of the deception, and they labour as contentedly for each other's 

 egg as if it were their own. 



