168 PROCEEDINGS ENTOMOLOGICAL SOCIETY 



replaced by a slight dark shade ; the yellow band in the subdorsal 

 ridge irregular, most distinct in joints 7-9, replaced by a bridge between 

 the subdorsal horns of joint 4 and forming rings about the bases of 

 the subdorsal horns of joints 11 and 12. Lateral white line present 

 centrally in the lateral ridge, yellow, tending to ring the horns and 

 joining the subdorsal line at the ends. Horns well spined, the spines 

 black. Skin smooth, shining, sparsely granular. Depressed spaces 

 indicated by intersegmental hollows only, not denned. Length, 4.3 

 to 7 mm.; another specimen, 4.9 to 6.6 mm. Duration of the stage, 

 four days. 



Stage V. Subdorsal horns of joints 3-5 equal, long, erect; of joint 

 6 minute; of 7-9 small; of 10 still smaller; of 11 moderate; of 12 

 small; of 13 long, but shorter than those of 3-5. Lateral horn of joint 

 3 small; of 4 long; of 5 absent; of 6 very small; of 7-9 small; of 

 10 very small; of 11 moderate; of 12 long. Translucent yellowish; 

 an opaque band in the subdorsal ridge of joints 7-9 with a bridge at 

 joint 4, making the dorsal space sole-shaped, containing a central 

 white line in a purple shade ; a broad yellow line along the lateral 

 ridge ; a waved white line in the lateral space. The horns appear clark 

 from the dense black spines. Of the depressed 'spaces, the addorsal- 

 intersegmental (1) show centrally as dark dots below the skin, 

 widening the purple dorsal line; on the sides obscure pale dots (4) 

 segmentally, posteriorly, and two in line (5 and 6) above the bases of 

 the lateral horns. Length, 7 to 10 mm. ; of another specimen, 6.6 to 

 10.5 mm. Duration of the stage, four to six days. 



Stage VI. Elongate, the sides parallel, a little concave centrally, 

 joints 3-5 enlarged, 11-13 less so; dorsum evenly rounded, no ridge at 

 the subdorsal angle ; subventral space contracted. Subdorsal horns 

 of joint 3 moderate; of 4-5 long; of 6-10 minute, those of 6 and 10 

 smallest; of 11 moderate; of 12 short; of 13 about like the subdorsal 

 of 3. Lateral horns of joint 3 small ; of 4 longer than the subdorsal 

 of 3; of 6-9 small, of 9 the smallest; of 10 moderate; of 11 long 

 like that of 4, longest of any of the posterior horns. Translucent 

 olivaceous, the horns yellowish, black-spined, with yellow cores; an 

 opaque yellow bridge on joint 3, crossing the subdorsal horns to tin- 

 lateral horns, thence to the lateral horn of joint 4, joining the yellow 

 lateral band, then narrow from the lateral horn of joint 12 to the 

 subdorsal horn ; a yellow bridge on joint 4 between the subdorsal 

 horns; a spot in the base of the subdorsal horn of joint 5, joining 

 its core; subdorsal band on joints 6-10, tapering to a point in 6 and 10; 

 a core-spot in the horn of 11 narrowly joining that of 12. Dorsum 

 of joints 4-6 dull brown-red infiltrated, of 7-12 blackish olivaceous 

 with a dorsal median submaculate bright blue line, from 5 posteriorly 

 to 8. Skin wrinkly-shagreened in clear curved ridges. Dorsal depressed 



