44 NOCTUA UMBftOSA. 



anterior segments, the head being smallest, the last 

 segment also sloping down on the back from the 

 twelfth, and tapering a little to the extremity. Viewed 

 on the back, the colour of the head is pale brownish, 

 freckled with darker brown, and streaked with brown 

 on the front of each lobe, and very shining; the skin 

 generally smooth and rather velvety on the rest of the 

 body, though a little shining on the back of the second 

 segment ; the dorsal line is very pale whitish-ochreous, 

 edged with a dark brown line on each side ; it is not 

 quite a simple line, but commencing broad on the 

 front of each segment, soon narrows, expands again 

 just at the middle, again contracts, and widens again 

 at the end ; the subdorsal line is of uniform thickness 

 throughout its course, and is also of the same whitish- 

 ochreous tint, edged on its lower side with a fine dark 

 brown line, and on its upper side by a wider brown 

 stripe, bearing a black dash, sometimes rather of a 

 wedge shape, on the anterior half of each segment; 

 the ground colour of the back between the lines is 

 ochreous or brownish, marked with fine longitudinal 

 dark brown wavy streaks, which are variously disposed 

 in their aggregation, sometimes suffusing the ground 

 colour in a narrow diamond form ; in other examples 

 more suffused behind, but generally these streaks give 

 more depth of colouring at the anterior part of each 

 segment ; the front pairs of tubercular dots are black, 

 and they often send forward a fine black streak ; the 

 hinder pairs are also black, but, from standing within 

 the before-mentioned black dashes, are invisible ; the 

 twelfth segment has the subdorsal lines slanting 

 inwards for two-thirds of its length, where the last 

 pair of the black dashes end abruptly, as do also the 

 suffused, wavy streaks, and from that part the sub- 

 dorsal lines bend outwards, and resume their former 

 course, approximating towards the end of the dorsal 

 line at the anal extremity ; the colouring of the side, 

 as far down as the spiracles, consists of two longi- 

 tudinal broad bands or stripes of equal width through- 



