BEETLES. 69 



in tropical America ; the antennae are fully twice as long as the 

 body. T. Decomtus, Cast., from Brazil, is black, with yellow 

 markings. 



Aristobia Horridula, Hope, is a curious reddish-brown East 

 Indian species. There are two large black tufts of hair on the 

 antennae near the base, and the elytra are thickly studded with 

 small tufts of short bristles. 



The genus Batocera, Cast., includes some of the largest and 

 most beautiful of the East Indian Longicorns. They have long 

 antennae, and strong spines on the sides of the thorax, and at the 

 front angles of the elytra. The species are generally brown or 

 yellowish brown, speckled or spotted with white. 



Gnoma Gira/a, Schreib., is a curious species from New Guinea, 

 in which the thorax is rather narrow, about as long as the abdo- 

 men, and constricted in the middle; it is of a uniform black 

 colour. 



Sternotomis, Westw., is a beautiful African genus, in which the 

 species are of moderate size, rarely exceeding an inch in length. 

 They are generally of a beautiful green, varied with black, and 

 sometimes with yellow. 



Tragocephala Formosa, Oliv., from the Cape, is black, with large 

 reddish or orange spots, and white dots ; the antennae are much 

 shorter in this genus than in Stenotomis. 



PetrognatJia Gigas, Fabr., is one of the largest of the African 

 Longicorns, equalling or surpassing the species of Batocera in size ; 

 and instead of reproducing the beautiful colours of the two last 

 genera, it is black, with dull grey elytra, marked with a large 

 irregular black blotch on the outer edge of each. 



We will now pass on to Macropus Longimanus, Linn., a com- 

 mon Brazilian insect, and one of the largest and most beautiful of 

 all the Longicorns. It differs considerably in size, and a very 

 good idea of the dimensions and general appearance of large 

 specimens may be formed from our figure. It is black, with 

 numerous red and grey markings on the elytra, and the legs are 

 also varied with red and black. 



Acanthodnus ^Edilis, Linn., is a greyish-brown insect, with two 

 more or less distinct darker bands ; it is rather more than half an 

 inch in length. This beetle is found more or less commonly in 

 pine forests throughout Europe, and is remarkable among the 

 European Longicorns for the enormous length of the antennae in 

 the male, which are four or five times the length of the body. 



