Summary.
Adalia bipunctata has so many varieties that it is highly suitable for the needed study of inheritance of normally occurring variations.
Adalia can be mated in captivity with ease, but their cannibalistic habit makes it very difficult to rear them satisfactorily in large numbers.
The time passed in the various stages is variable, depending not only on the food, hut also on the temperature, to which all stages, but especially the pupal, make a rapid response.
Little is known of either hibernation or migration, but apparently both septempunctata and bipunctata tend to collect in numbers in the spring and autumn, and may at times be found hibernating, piled upon one another, similar to the “masses” of Hippodamia found in the western U.S.A.
There is no evidence of dominance in crosses between the two main forms–the Red “type” and the Black (var. 4‐maculata and var. 6‐pustulata).
Eleven ma tings of Red produced only the Red type.
Black and Red forms also occur in G. variabilis, and, as in bipunctata, neither is dominant.
The pronotum of the Black form is darker than that of the Red, but there is no progressive blackening of the pronotum of the Red coincidentally with the increase in the size of the black spots of the elytra.
Although it is possible to make a series from pure red elytra on the one hand through various patterns to pure black on the other, this cannot be regarded as proof that the variations are merely fluctuating. The percentages of the variations is, as far as is known, approximately stable, and certain types are far more common than others. These facts, combined with the observation that the children tend to show the variations of the parents, strongly suggest that there are probably certain points of genetic stability, and that only analysis is needed to show that there is some regular method of inheritance.
With Plate VIII and two text-figures.) SECTION I. ON THE INItERITANCE OF SPOTS IN THE LARVA. O. A. MERI~ITT HAWKE8 !37 definite. The dra~ving on Plate V (8), which is notsufficiently clear ~o be aughorital~ive, shows no spots. The difference between the two species therefore.is, that whilst cynthic~ has seven complete series of black spots, five of these are entirely lacking in rieini and the remaining two are generally partially present but are variable. The condition in cynthia is therefore called spotted and denoted by 2, whereas that in ridM, which superficially looks plain, in spite of the lower lateral series, is called plain and is represented by P.
The following notes on the abdominal viscera of Chlam.ydoselachus angtdneus (Gar.) are published, because the first writer on this species, Garman (1), had only a partly eviscei-ated female, and the second writer, Giinther (2), gave only a general description which does not make note of the distinctive characteristics of Chlamydoselachus. On some points, my specimens did not agree with either that of Garman or those of Giinther.
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