Intersexual forms of Plebeius anjus L. 231 



fourth tube had one well-developed ovum, and all the 

 rest were very immature and apparently abnormal. In 

 the right ovary in the outermost tube there was not 

 even a dilatation where the first ovum should have been, 

 and the ova actually present were all very backward in 

 development. In the second tube the first ovum was 

 aborted and the rest very immature, in the third tube 

 the first ovum was still more obviously aborted. In the 

 fourth tube the first ovum in the fresh condition was 

 represented by an oval mass of granular material much 

 bigger than a full-sized normal ovum. This owing to lack 

 of density has shrunk in alcohol, and the figure gives a 

 poor idea of its original bulk. In this ovary there was not 

 a single ovum which appeared to be normal (PI. IX, fig. 5). 



In intersex no. 25, a specimen with only a little 

 blue on the left side, there were three ova in the vagina, 

 of which the lowest and highest were normal. The middle 

 one was very small, with dense homogeneous green contents 

 hke those of a normal ovum, and with a small crinkled 

 shell with deficient sculpturing. There was a normal ovum 

 in each common oviduct. In the left ovary the lowest 

 eggs were normal, but three are depicted end on owing to 

 twisting of the egg-tube in preparation. They lay with long 

 axis vertical and were moving down the oviduct. The 

 smaller ova were very immature, and not all at correspond- 

 ing stages of development at corresponding points in each 

 tube, as they are in a normal ovary. In the right ovary in 

 one tube the lowest ovum was small and misshapen, but 

 had dense green contents and a shell small but sculptured. 

 The ovum above it was normal, as were the lowest ova in 

 the next two tubes. The lowest ovum in the fourtli tube 

 was absent (PI. IX, fig. 6). The third abnormal specimen 

 had only three instead of four egg-tubes in each ovary, 

 but the ova were normal. This specim.en laid two eggs in 

 captivity. The figure of it gives a good idea of the size of 

 a normal egg-tube for comparison with the small abnormal 

 tubes of the other two (PI. IX, fig. 4). 



The ova with dense green contents indicating maturity 

 are unshaded, " the less mature with granular yellowish 

 contents are shaded in all the diagrams. 



Amongst the intersexes of coridon a specimen with 

 similar ovaries, each with only three egg-tubes, was 

 discovered. In a hundred normal Lycaenids of various 

 species every ovary had four egg-tubes. 



