178 The Scottish Naturalist. 



well as the stem. Some larvae were converted into pupae in 

 situ, but others left the plant previous to their change taking 

 place. In my first attempts to rear the perfect insect, I was 

 baffled by one of the specimens giving birth to a black and red 

 ichneumon — which in escaping drilled a round hole, of a diam- 

 eter corresponding to the width of its body, in the puparium — 

 and by others being unproductive. I was more successful 

 afterwards, and obtained the fly in the autumn, from maggots 

 collected in July; thus proving that there may be two broods 

 during a season. I have met with it most frequently in dry 

 banks in uncultivated glens. 



The ??iaggot is thick, and rough with wrinkles, sub-ovate, 

 narrowed considerably behind, and somewhat suddenly con- 

 tracted in front ; finely granulated, and rather thickly shortly 

 appressed pubescent ; dirty-whitish ; the anterior stigmata are 

 marked by two approximating brown points placed above a 

 hollow, in which the black oral hooks are received ; the hinder 

 end is somewhat conic, and is provided with a long projecting 

 sub-linear granulated process, composed of two united parallel 

 layers separated by a central longitudinal fissure ; this process 

 is widest at the base, where the skin of the body continues for 

 a short distance to cover it, and is terminated at the tip by the 

 stigmata, each of which has a pore ; before it on each side there 

 is a small tubercle, and behind it in a similar position, two sharp 

 longish lobes ; the anus is placed considerably forwards on the 

 belly, and has two blackish hard plates, divided by a fissure ; 

 length 4^ lines. 



The puparium is shaped and coloured somewhat like the 

 maggot, being composed of the indurated larva skin; pale brown- 

 ish white, or pale straw-tinted, nearly oval, convex, a little nar- 

 rower behind, the front shortly contracted ; the segments faintly 

 separated, finely transversely striated, minutely granulated above 

 and beneath, with the remains of a thickish short appressed 

 pubescence; sides anteriorly indistinctly keeled; thetipbluntish; 

 its middle with two parallel keels separated by a hollow; above 

 it there is a fovea, which has two sharp keels convergent behind; 

 beneath it lies an open pore, the fore-edge of which is puckered, 

 and resembles an arch ; hinder-end rougher, after a gradual 

 slope on the top and sides, narrower, its sub-conic tip above 

 with a long projecting light brown granulated process, as in the 



