INJURIOUS AND BENEFICIAL INSECTS. 259 



produced laterally into triangular projection, giving a serate 

 outline to the body, the teeth being obtusely rounded. 

 The segment next behind the head is the widest, the succeed- 

 ing segments gradually decreasing in width and increasing 

 slightly in length to the end. The terminal segment is about 

 half as wide as the body in its widest portion, and is some- 

 what triangular, with the sides parallel, and the tip obtusely 

 pointed. The prothoracic segment or the one next the head 

 is broader than long, and with a fleshy projection on each 

 side at the base of the head. On the upper side of this seg- 

 ment is a large, square, slightly horny area. The head is ante- 

 rially pale honey yellow, with two dark longitudinal parallel 

 lines ; the horny portion is about as long as broad, much flat- 

 tened, subtriangular. The antennte are very minute , slender, 

 three-jointed, with the joints nearly equal in length. The jaws 

 and palpi are so minute that a description will be of no practical 

 use here. The body is finely shagreened, with a few fine scat- 

 tered hairs. It is whitish, with a slight greenish tinge, and a 

 quarter (.25) of an inch long, and less than a tenth (.07) of 

 an inch broad. It was sent to me alive in September. 



The Tick Trefoil Leaf-miner. — This insect (Metonius 

 loerigatus,) which is not uncommon in this State, has been 

 found by Mr. V. T. Chambers of Covington, Ky., mining the 

 leaves of the tick trefoil (Desmodium) during the early part 

 of September. The larva is from .15 to .20 inch in length, 

 and mines a broad, irregular patch, sometimes only half the 

 length of the leaf, but often it extends its burrow around the 

 end of the mid-rib, half way down the other side of the leaf. 

 The track of its burrow is irregularly sinuous. At 

 the end of this gallery or burrow it forms a round 

 chamber just as wide as the body is long, disc- 

 shaped, the walls being convex, the cell looking like 

 a smooth, regular blister. 



The grub (fig. 13) difiers greatly in form from the 

 preceding one, the body being quite thick, but lit- 

 tle flattened, beinsf rather convex above and below : Fig. is.-Lar. 



*-" va of Metom- 



in form oval lanceolate, widest in the middle, taper- "*• 

 ing much more rapidly posteriorly than toward the head. 

 The segments, especially those of the abdomen, very convex 

 on the sides, being produced triangularly into very acute 



