TRIFIDjE. 21 



with tlie points truncated ; througli tlie middle of this row of 

 diamonds runs the very conspicuously wide dorsal stripe of 

 bright ochreous-yellow, which at each end of the body becomes 

 narrower, and is relieved throughout by a very fine black 

 edging ; sometimes a faint cloud of greyish appears in the 

 middle of this dorsal stripe, but this is more frequently the 

 case in the younger larvee ; the subdorsal stripe is nearly as 

 wide as the dorsal, but is more of a greyish-yellow, clouded 

 faintly with greyish along the middle, and edged above and 

 below by a thin darker line ; close along the upper edge, in 

 contact with it, is a series of oblong, squared, black marks, 

 each mark situated on the anterior portion of a segment, 

 those on the third and fourth segments being narrower than 

 the rest and rather wedge-shaped, that on the twelfth ex- 

 tending the whole length of the segment ; there is another 

 longitudinal stripe darker than the ground colour between 

 the subdorsal and the spiracles, more strongly tinged with 

 darker brown at the beginning of each segment ; below the 

 spiracles is a broad longitudinal stripe, pale ochreous at its 

 upper and lower edges, rather greyish-ochreous along the 

 middle, bearing a couple of brown freckles on most of the 

 segments ; the upper edge of this stripe is well defined by a 

 very line brown line, on which are the spiracles, small and 

 white, either simply outlined with black, or placed in fusi- 

 form black blotches, which gradually increase in size to the 

 twelfth segment ; the dorsal raised spots are black and are 

 joined together by narrow blackish bars ; uudersurface 

 yellowish-brown, with a faint central paler longitudinal line, 

 legs and prolegs similar, the latter bearing a couple of small 

 brown dots and tipped with the same colour ; head brownish- 

 grey freckled with dark brown, with a black wedge-shaped 

 spot down the middle of each lobe ; on each side is also a 

 black streak. 



The young larva is at first of a semi-pellucid greenish-grey 

 colour, with a brown head, and an internal brownish green 

 vessel ; all . the usual raised dots very conspicuous aud each 



