61 



indistinct. All of these lines were broken behind the eleventh segment. Following 

 these markings is the broad darker brown dorso-lateral stripe, which is faintly 

 streaked with pale. Below this is the pale stigmatal stripe which is bordered beJow 

 and sometimes above with j^ellow. Subspiracular stripe poorly defined, followed by 

 the gray stripes on the sides of the venter. Venter with a median gray or pale line, 

 the nerve ganglia not to be seen externally. General color of thorax above paler 

 than the abdomen. 



Head brown or reddish, marked much as in Stage V, front with an imperfect 

 X -shaped pale marking. Mandibles brown, five-toothed, the two inner teeth minute. 

 Cervical shield brownish yellow, with irregular pale markings and black margins. 

 Shield broad, almost covering the dorsum of the segment, its surface microscopically 

 sculptured into five-sided areas and bearing at the center a shallow transverse impres- 

 sion. Anal shield colored like the body, the sides darker; shape triangular, with 

 sinuate or notched margins. Legs and prolegs pale; the anal prolegs spreading. 



Tubercles inconspicuous; i spotted with dusky, ii spotted with shining black; i and 

 ii are the largest on segments IV, V, and XI, where they are conical, shining black 

 and conspicuous; iii and iv shining black, the latter inconspicuous; vii and viii con- 

 colorous, their setae pale. Arrangement differing from that of Stage IV as follows: 

 On segment I, the area of the first pair is oblong and the additional tubercles at the 

 base of the legs are minute. On segments II and III, iv is flat, depressed, and circu- 

 larly roughened. On the lower side, in front of the base of the legs, are two widely 

 separated pairs of minute tubercles and a third pair at the outer bases of the legs. 

 These tubercles first appear as a single pair in stage III. On segments V, VI, and 

 VII, i, ii, and iii are equal and iv is much smaller, v is below the spiracle and further 

 from it than iii and iv. On the succeeding segments vi increases in size, equaling iii 

 on segment VII, exceeding it on segment VIII, and equaling it on segment IX; after- 

 wards, as in stage IV. On the last segment the two tubercles of viii form an oblique 

 line. 



Stage VI. 



Millimeters. 



Average length after ecdysis 34. 95 



Average length when full grown 42. 25 



Average width of head cast > 3. 95 



Body somewhat stouter than in Stage V, the first and second abdominal segments 

 distinctly widened and the tip of the abdomen narrowed. Ground color opaque yel- 

 lowish, body marked as follows: Median line pale, interrupted, bordered by a broader 

 stripe of velvety black, which is finely lined with a pale streak. Aside from these 

 the dorsal region is greenish-yellow, marked on each side by fine narrow yellow 

 lines, the inner and outer ones broadest and the others often interrupted. Beyond 

 the eleventh segment all are irregular, and the median black lines are fused together. 

 Dorso-lateral stripe dusky, broad, and conspicuous, indistinctly marked by three fine 

 broken pale lines. It extends from the head to segment XII, where it suddenly 

 fades out. Stigmatal stripe broad and conspicuous, pale yellow, bordered below with 

 whitish. It extends back from the head, gradually tapering to the base of the anal 

 proleg. Below this the surface is irregularly marked with whitish. Under side of 

 body greenish-gray, the middle and side stripes whitish, narrow, and quite conspicu- 

 ous, except on the thorax and apex of the abdomen. Sides of the body below more 

 or less tinged with pink. Thorax not paler. 



Head brownish red, tinged with green, its sculpture and spots irregularly polygo- 

 nal. Paraclypeus paler, transversely grooved. Clypeus densely grooved. Mandi- 

 bles dark at tips, with an indistinct sixth tooth. The cheeks paler. Cervical shield 

 brownish red, margined with black behind and along the sides, marked irregularly 

 with white; the edge curved in front and straight or emarginate behind, and the 

 disk with a median and two transverse impressions, its tubercles placed in minute 



