1914] Life History of Lady Beetles. 233 
_the -pale apical margin; elytra deep and bright scarlet with transverse 
pale spot on each side of scutellum; legs black to brownish, tarsi brown- 
ish; general shape broadly oval and rather strongly convex. Length 
4.5 to 5.5 mm.; width 3.5 to 4.75 mm. 
Egg: . Fig. 28, Plate XX XIII. ! 
Pale amber yellow; length 1.36 to 1.5 mm.; width .63 to .7 mm. 
Larva: Fig. 30, Plate XX XIII. 
First instar: Black or dusky with pale lateral spot on first abdom- 
inal segment, setaceous spots black as in other species. Second instar: 
Same as first except that fourth abdominal segment shows pale lateral 
and dorsal spots, and sometimes lateral pale spot appears on fifth and 
sixth segments, median of meso- and meta-thorax whitish to yellow. 
Third instar: Same as previous except that yellow spots on fifth and 
sixth segments and on median of thoracic segments are always pro- 
nounced and anterior margin of pronotum is also pale, median of 
abdominal segments whitish, giving effect of light median stripe; 
median and anterior portion of head brownish, while lateral and posterior 
portion is deep black; legs, especially front pair unusually long. Fourth 
instar: Same as preceding except that the spots are more yellow and 
lateral margins of all thoracic segments are pale whitish or yellowish; 
legs still longer than those of the other species studied; general color 
dark bluish. This larva strongly resembles the larva of Olla abdom- 
inalis. 
Pupa: Fig. 29, Plate XX XIII. 
Ground color pale maize yellow, darker in spots, especially in the 
depressions between the abdominal segments, a broad band along 
anterior and lateral margins and a round spot within lateral margin on 
each side of pronotum. Wing pads dark maize to honey yellow or 
sometimes quite brownish with posterior margins always brown; black 
markings as follows: Pronotum with a pair of black spots on anterior 
and another on posterior margin, also an anterio-lateral pair less pro- 
nounced, a pair of median spots on meso- and meta-thorax and on 
abdominal segments two to six inclusive, third segment with three 
pairs of spots; legs brownish honey yellow. Length 5 mm. 
Life cycle records were made as follows: 
Egg stage (7 records) 3-5 days, mostly 4 days. 
Larva stage (7 records) 9-16 days, mostly 11 days. 
Pupa stage (7 records) 3-5 days, mostly 4 or 5 days. 
Egg to adult, 15 to 20 days. 
This species has been observed by Mr. Bragg feeding on 
Mac. solidaginis, and in the breeding cages it did well on Aphis 
heraclet Koch., Rhop. pastinaceae, Mac. gaurae, Mel. smithiae, 
Aphis setariae, Aphis oxybaphi, and Aphis helianthi. 
Some larvae of Scymnus species, determined by Major 
Casey as probably a new species somewhere in the vicinity of 
cockerellt Casey and consobrinus Lec., were reared but’ no life 
history notes were taken. 
