104 PRIZE ESSAY: 



colour of the fly is black jC 1 ) the under side of the head and two 

 narrow longitudinal lines in the thorax yellow ; under side of the 

 body pale yellow, with two black spots on the mesosternum ; 

 halteres or poisers white ; the legs ash grey, and black at the 

 tips ; maggot small and white; pupa yellow, smooth and shining, 

 and rather more than one-twelfth of an inch in length. 



170. The American Meromyza, (Meromyza Americana^ 2 ) 

 Fitch.) Length about one-fifth of an inch from tip to tip of its 

 wings ; colour yellowish white, with a black spot on the top of 

 its head, continued backward towards the neck ; thorax with 

 three black stripes ; abdomen with three broad blackish stripes ; 

 wings semi-transparent ; eyes bright green ; found in the latter 

 part of June. 



171. The ObeseSiphonella, (SiphonellaObesa Fitch.) About 

 the size of the preceding insect ; body short and thick ; colour 

 black ; under side of the body yellow, with a tinge of green un- 

 der the abdomen ; legs tawny yellow, with their tips black ; head 

 yellowish white ; antennae tawny yellow, their tips black ; an 

 egg shaped spot on the crown, two dark stripes on each side of 

 the breast, and the anterior pair of feet black. 



172. The larvae of these insects burrow in the stalk, render- 

 ing them dwarfish, and often causing the heads to perish; 

 small, slender, pale green and watery white shining maggots. 



173. The Common Chlorops, (Chlorops Vulgaris. Fitch.) 

 Length about one-fifth of an inch from tip to tip of its wings ; 

 colour, pale, tawny yellow, with a round black spot on the top 

 of its head ; tips of antennse and feelers black ; two black bris- 

 tles at the end of the middle shanks, and one at the end of the 

 forward ones, with rows of black bristles upon the thorax ; on 



(1) Duncan, quoted by Stephens. 



(2) For notices of these insects, see Dr. Fitch's Report on the Insects of New 

 York, 1856. 



