292 NATURAL ARRANGEMENT OF INSECTS. 



eastward as the Philippine islands. The Lamiina; form 

 a very large group, and range all over the world. They 

 possess great variety of form,, and amongst them are 

 found some of the most eccentric of the entire circle. 

 They are rarely metallic, and their prevalent colours 

 are greys and drabs ; their anterior tarsi are frequently 

 considerably dilated, and their antennae have occasionally 

 a horny hook at the extremity. Some of the most re- 

 markable genera are Gnoma, with its greatly elongated 

 neck, and the terminal joints of its antenna?, forming seg- 

 ments of a circle ; these are natives of the larger islands 

 of the South Pacific Ocean : then Tapeina, in which the 

 head is considerably flattened in front, and produced 

 into a lateral plate, behind which the antennae are in- 

 serted ; TracJiysoma, with its humped camel-like back ; 

 and Xylorhiza, which has all the appearance of a piece 

 of dead stick. [(258, 259.) W. E. Sh.] 



(260.) The third, or sub-typical, family of the Capri- 

 corn beetles ara the Irtpturidtf, known at once by their 

 slender form, their small and slightly exserted head, 

 which is triangular in front, and by their cursorial legs ; 

 the hinder pair of which are more or less lengthened. 

 The most universal character, probably, among these 

 insects, is the prolongation of the first tarsal joint, which 

 is equal in length to all the others, particularly in the 

 hind legs ; the second joint, also, is not heart-shaped or 

 dilated, but more properly resembles the sides of a 

 wedge : the head is narrower than the thorax ; and the 

 eyes are generally oval, instead of kidney-shaped. The 

 profile of the head, no longer vertical, is directed 

 obliquely forward. Under this family we include most 

 of Latreille's restricted genus Cerambyx, together with 

 all the other floral capricorns, as Leptura, Clytus, Necy- 

 dalis, &c. 



(26l.) The great majority of these elegant insects, 

 remarkable for their vivid colours and slender form, 

 may be naturally arranged under the following sub- 

 families: 1. The Stenocorince ; where the body is 

 cylindrical, convex, and of equal breadth throughout; 



