. Bulletin. Natural history; Natural history. 300 ILLINOIS NATURAL HISTORY SURVEY BULLETIN XX:1V Observations since 1929 confirm my belief then that A. vivipara is not viviparous under natural or most field conditions. Many vivipara females have since been observed carrying their egg masses as do other Allocapnia. The spring and summer forms produce egg masses as do all the fall and winter forms, but the eggs constituting these masses are usually f^n^ 19. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and
. Bulletin. Natural history; Natural history. 300 ILLINOIS NATURAL HISTORY SURVEY BULLETIN XX:1V Observations since 1929 confirm my belief then that A. vivipara is not viviparous under natural or most field conditions. Many vivipara females have since been observed carrying their egg masses as do other Allocapnia. The spring and summer forms produce egg masses as do all the fall and winter forms, but the eggs constituting these masses are usually f^n^ 19. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Illinois. Natural History Survey Division. Urbana, State of Illinois, Dept. of Registration and Education, Natural History Survey Division
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Keywords: ., booka, bookcentury1900, bookdecade1910, booksubjectnaturalhistory
