156 



be subject to the attacks of any parasite, their only aids in the ani- 

 mal kingdom in keeping it in check being the Wood-peckers, and 

 even among these the Downy Wood-peckers, (Picus pubescens) 

 appears to be the only valuable aid. It appears to be peculiarly 

 adapted by nature for discovering and destroying the Apple-tree 

 borer and similar larvae. It should therefore be protected with jeal- 

 ous care. 



Spec. char. Imago. — Head vertical, about as broad as the front part 

 of the thorax ; eyes large ; antenna? nearly as long as the body, taper- 

 ing, first joint much thicker than any other. Thorax cylindrical ; 

 sides parallel; narrower than the elytra ; somewhat longer than wide; 

 Elytra long and narrow, slightly widened in front ; shoulders rounded; 

 not furrowed, but smooth; face white; eyes black. The coloring of 

 thorax and elytra consists of five stripes, three of which — the two 

 outer and middle — are cinnamon brown, and rather wider than 

 the two intermediate ones, which are white; each of these stripes is 

 very distinct, and all extend from the head to the tip of the elytra. 

 Underside thickly covered with white down. Legs and antennae "dark 

 ash color. 



Length as given above. 



Saperda vestita. Say. (The Hairy Saperda.) 



This species is thickly covered with greenish-yellow hair, giving it 

 an olive-green color, each wing-case being marked with two or three 

 black dots near the middle. It is about three-fourths of an inch long; 

 the width about one-third the length. Dr. Harris says he has taken 

 specimens on European lindens from which the} r had just come 

 forth. 



Spec. char. Imago — Antennae about the length of the body; eyes dark 

 chestnut; thorax with an obsolete dorsal line; elytra unarmed at tip; 

 dots black, small, three on each elytra, placed one before and near the 

 middle, largest one a little nearer the base and more distant from the 

 suture than the other, and one behind the middle, distant from the 

 preceding line with the anterior one. Length three-fourths of an 

 inch. 



Saperda tridentata. Oliv. (The Three-toothed or Elm-tree 



Saperda.) 



This species, which is slightly more than half an inch long, is 

 quite slender, the width being not more than one-fourth the length. 

 It is of a dark brown color, thinly covered with grayish down, which 

 gives it the appearance of being sprinkled over with fine gray 

 powder. 



The black eyes are surrounded by a narrow white line, which above 

 is yellow, a narrow yellow stripe on each side of the thorax; each 

 wing case has on it three distinct, though rather narrow, yellow, 

 oblique bands, which run from the outer margin obliquely backward 

 and inward to the suture; those from the opposite side meeting at the 

 suture. From the outer end of the anterior of these bands a similar 

 stripe runs forward along the outer margin of each wing case to the 

 shoulder; underside brown, thinly covered with gray down. 



