FURTHER NOTES ON ORGYIA SPI.ENDIDA. 195 



were bred over a series of five years, the largest number anj- one year 

 being 46—20 J s and 26 ? s.] 

 G. EucJiloe cardamines in 1888, 1889, 1890, 1891, and 1892, obtained 125 j s and 

 119 ? s, i.e., 105 : 100. 



7. Apatura ilia in 1886, 1888, 1889, 1890, and 1891, obtained 58 <? s and 52 ? s, 



i.e., Ill : 100. [Although this looks a fair excess of <f s over } s the most 

 widely different figures were 17 (? s to 12 ? s, 8 (? s to 12 ? s.] 



8. Aglim urticae in 1884, obtained 643 i s and 630 ? s, i.e., 102 : 100. 



9. Vanessa to in 1883, 1884, and 1893, obtained 1203 s s and 1132 ¥ s, i.e., 106 : 100. 



10. Euvanessa untioini in 1888, obtained 250 3 s and 242 ? s, i.e., 103 : 100. 



11. Piirameis atalanta in 1884 and 1888, obtained 192 j s and 176 ? s, i.e., 109 : 100. 



12. Thaumas vespertilio in 1888, obtained 221 j s and 209 ? s, i.e., 105-7 : 100. 



13. Hi/les euplwrlnae in 1885 and 1886, obtained 540 s s and 530 ? s, i.e., 101-8 : 100. 



14. Amor ph a pop nil in 1891, obtained 261 ,^ s and 259 ? s, i.e., 100-7 : 100. 



15. Callimorpha dominula in 1890, 1891, 1892, and 1893, obtained 1327 is and 



1245 ? s, i.e., 106 : 100. 



16. Malacosoma castreu.^is in 1884, obtained 207 cf s and 198 ? s, i.e., 104-5 : 100. 



17. Lachneis lanestris in 1S89, 1890, 1891, and 1892, obtained 586 c? s and 550 ¥ s, 



i.e., 106 : 100. 



18. PaehiiqaMria trifolii in 1882 and 1893, obtained 143 cT s and 131 ¥ s, i.e., 



109 : 100. 



19. Gaatropaclia ilici folia in 1882 and 1892, obtained 255 ^ s and 234 ¥ s, i.e., 



109 : 100. 



20. Deiiilrolimus pirn in 1879, obtained 782 c? s and 745 ¥ s, i.e., 104 : 100. 



21. Bimorpha versicolora in 1886, 1889, and 1890, obtained 291- cf s and 280 ¥ s, 



i.e., 103 : 100. 



22. Saturiiia pyri from 1887 to 1893, obtained 887 i s and 829 ¥ s, i.e., 107 : 100. 



23. Saturuia s'pini from 1884-1893, obtained 1546 6 s and 1459 ¥ s, i.e.. 106 : 100. 



24. Satiinna pavonia from 1881-1893, obtained 1920 d s and 1818 ¥ s, i.e., 105 : 100. 



25. Aplia tail from 1881-1892, obtained 763 cf s and 723 ? s, i.e., 105 : 100. 



26. Harpi/ia bictispis in 1881, 1886, and 1887, obtained 159 cf s and 141 ¥ s, i.e., 



113 : 100. 



27. Hyboeampa ittrigosa in 1885, obtained 77 cf s and 73 ¥ s, i.e., 1U5 : 100. 



28. Tjeiicania ivipudens in 1878, 1879, and 1881, obtained 82 cJ s and 77 9 s, i.e., 



106 : 100. 



29. Leiicania loreyi in 1882, obtained 97 <? s and 89 ¥ s, i.e., 109 : 100. 



30. Amphipiira livida in ]887 and 1878, obtained 458 s s and 438 ¥ s, i.e., 104 : 100. 

 These represent the most striking results, i.e., those obtained from 



the greatest number of specimens reared, the nearness of the numbers 

 in many (or most) cases is very remarkable, and tend to point the 

 moral that, in nature, there is very little ditterence in the sum total of 

 the sexes of any species that come to maturity in any given season. 

 There is no doubt that any similar experiment conducted on an 

 equally large scale would give results not far removed from those 

 already arrived at. Our only reason for writing this note is to give 

 our lepidopterists a knowledge of Standfuss' results, so that they may 

 be on their guard against wild and unsupported assertions that the 

 females of lepidoptera are so much rarer than males in nature. 



Further notes on Orgyia splendida. 



By T. A. CHAPMAN, M.D. 

 On our first arrival at IVIoncayo I met with one or two small Ori/i/ia 

 larva:', sunning themselves on stones or grass stems. By degrees I 

 got more familiar with them, and learned how to take them easily 

 and to understand their habits. Also, those found became rapidly 

 much larger and more easily seen during the few days of our stay, I 

 finally collected between 200 and 800 of these larvre, but there is little 

 doubt I should have done better Avith them had I been more moderate, 

 as there was considerable difficulty in doing anything with them 



