COLEOPTERA. LEPTURID.^. 369 



pi. 2.), from Saint Vincent's, being only three fourths of a hne in 

 length, and remarkable for having only ten joints in the antennae. 



The third and last family, LEPXuRiDiE * Leach, nearl}' corresponding 

 with the Linnaean genus Leptura {fi(j' 44. 15. Strangalia elongata $ ; 

 44. IG. posterior tibia and tarsus $ ), comprises such longicorn beetles 

 as have the eyes rounded, or very slightly emarginate (^fig- 44. 

 18.); the antennai of moderate length, inserted before the eyes; the 

 head is inclined downwards, and elongated behind the eyes, or nar- 

 rowed into a neck {fig. 44. 17.) at its union with the thorax, which 

 is conical or trapezoid, and narrower in front than the head ; the 

 mandibles are acute at the tips (^^.44. 19.); the elytra are nar- 

 rowed to the tips, so as to give the terminal part of the body the 

 appearance of an elongated but reversed triangle. 



The perfect insects are active, and are found upon the trunks of 

 trees, or more commonly upon umbelliferous flowers in the hot sun- 

 shine. They are often ornamented with yellow markings upon a dark 

 ground. They reside in their previous states in the trunks and 

 stumps of trees. It is in such situations that 1 have observed the 

 transformations of Rhagium vulgare and Strangalia elongata. The 

 larva; of these two insects closely resemble those of the Ceramby- 

 cida;, but are of a more uniform breadth ; and the head is nearly 

 equal in size and breadth to the following segment {fig- 44. 20. head 

 and prothorax of larva of Strangalia elongata), which, as well as the 

 head, is depressed and scaly. The posterior margin of the thorax, 

 and the abdominal segments of the pupa, of the latter species, are 

 furnished with transverse series of short, recurved spines; and the 

 extremity of the abdomen is also terminated by two acute points 

 bent upwards. Dr. Ratzeburg has figured the transformations of 

 Rhagium indagator {T>ie Forst-Insecten, Col. t. xvii.). 



* BiBLIOG. IIe1-£II. to THE LEPTURIDiE. 



Servilk, in Ann. Soc. Ent. de France, 1835. 

 Knock, Neuc Bertrage I. pi. vi. 

 Serville and Saint FarycMi, in Enc. IMetli. vol. x. 

 Kirhy, in Trans. Linn. Soc. vol. xii. 

 Hope, in Trans. Ent. Soc. vol. i. 

 Lcfvbvre, in Silbcrm. Rev. Ent. vol. iii. 



And the general works of Gylknhall, Stephens, Olivier, Fahricius, &c. 



B B 



