THE CANADIAN ENTOMOLOGIST. 231 



Stage 7. — Length, 9^ to 10 mm. Larger, brownish in general colour, 

 broadly whitish laterally on sides, and the stubby bristles of integument 

 showing very plainly, the white rows mostly on median region. Three 

 specimens. 



The above stages have been separated solely by examination, but are 

 probably approximately correct. Described from alcoholic specimens, 

 swept from alfalfa May 28, 1891. Specimens of the same larva, from 3 

 to 7 mm. long, had been previously swept from alfalfa, May 9 to 12. 

 General colour noted in life. (Nos. 18, 30.) 



(b). — Yellowish Larva, with black warts or tubercles. 



Length, nearly 7 mm. Five pairs of prolegs, on usual segments. 

 Hardly any hairs above, rather long hairs on sides and below, all these 

 hairs directed downward. Head black, with a yellow triangular area in 

 middle, and with yellowish oral region and antennae. Prothorax with 

 six black spiniferous tubercles in a transverse row, and two blackish 

 markings on posterior border. Other thoracic segments with the same 

 six black tubercles, and also with two similar but somewhat smaller 

 yellowish tubercles, one on each side of the median pair of black ones. 

 All the abdominal segments, except the anal, with the same tubercles as 

 last two thoracic segments, but each in addition with a median anterior 

 pair of small blackish tubercles situated between and slightly anterior ta, 

 the median large pair. 



One specimen, swept from alfalfa May 12, 1891. Colour noted in life. > 

 (No. 79.) 

 (c). — Pale greenish, nearly bare Larva. 



Length, 8 mm. Light-greenish, inclining to brownish posteriorly, with a ' 

 whitish stripe on each side of the body. Five usual pairs of prolegs. Integu- 

 ment bare and without hairs, except on venter. Head and feet lightcoloured, 

 pale-yellowish. Methorax with a pair of black spots on dorsum, each spot 

 just inside the lateral white stripe. Fifth (first abdominal) segment with 

 a pair of larger black spots, one on each side just outside or below the 

 lateral whitish stripe. Each of the lateral whitish stripes with two narrow 

 brown lines running its whole length and more approximated to lower 

 border. The greenish median portion has three lighter narrow longitu- 

 dinal lines, one being median, and the outer ones very closely approxi- 

 mated to the lateral whitish stripes. 



One specimen, swept May 9, 1891. Colour noted after a few days' 

 immersion in alcohol. (No. 29.) . : 



