258 BOARD OF AGRICULTURE. 



The anterior femora are rather shorter than in the other 

 species, but on the whole niore like those of the seventeen- 

 year cicada than the C. pruinosa. The spines are large and 

 heavy ; the basal one like that of O. pruinosa, but rather 

 shorter and broader, with the tooth situated nearer the base. 

 Of the five inner teeth the first one is twice as large as the 

 second. Near the end of the tibite are two well-marked teeth, 

 much more distinctly marked than in the other two species, 

 which have but one low appressed tooth in their place. The 

 tarsus projects about a third of its length beyond the tip of the 

 tibia. Length .80, breadth .35 inch. 



The Brachys Leaf-miner .—Th\s and the following beetle 

 have the singular habit of mining the leaves of plants. It is 

 rarely that beetles live this sort of life, though many cater- 

 pillars and maggots of flies are leaf-miners. Dr. Harris has 

 given in his Treatise an account of the larva of Hispa which 

 mines the leaf of the apple-tree, eating the pulpy substance 

 between the upper and under surface of the leaf. The two 

 insects of which we now treat belong to the family of Bupres- 

 tids, several species of which do much injury to our fruit and 

 shade trees in the grub state. They are footless grubs and 

 recognized by the broad, rounded, flattened segment just be- 

 hind and partially enclosing the head. The young of the fol- 

 lowing insects depart somewhat from this typical 

 form owing to their peculiar leaf-mining habits. 

 The first of these is the young of the Brachys 

 ceruginosa which has been found by V. T. Cham- 

 bers, Esq., of Covington, Ky., mining the leaves 

 of , and I am indebted to him for a 



sj^ecimen of the larva here figured. (Fig. 12.) 



I may remark here that a closely allied beetle 



(B. terminansj, I have often found resting in the 



leaves of the oak and beech. The beetles of this 



,„ , genus are flattened, an<jular ovate, and less than a 



Fig. 12.— Lar- » ' O » 



va of Brachys. quarter of an inch in length, and the scutellum is 

 small, as Leconte observes, while the shanks (tibite) are linear. 

 In the succeeding genus, Metonius, Leconte says that the 

 body is triangular, while the scutellum is large, and the 

 shanks are dilated. The body of the larva is rather long, 

 with the segments very deeply cut, being flattened, and 



