SEASONAL FOEMS 
591 
dimorphic is not necessarily to prove that the forms are associated 
with seasons. In the genus Precis, so far as my very few observa¬ 
tions (limited to the dry season) are worth anything, the two forms 
ocellated and non-ocellated seem to he closely associated with wet¬ 
ness and dryness respectively. Catopsilia pyranthe, as Dr. Dixey 1 
has shown, occupies a far less clear position, and I may add that 
Terias hecabe did not appear to me to follow any rule. The two 
forms were taken together in most places. 
Many dwarfed specimens of the genus Precis were met with as 
the season advanced; with the exception of one, P. almana, form 
asterie, they were all of the “ dry ” type, most of them markedly so. 
The smallest Terias hecabe was of the “ dry ” form, so was a dwarf 
Teracolus dulcis; two dwarfed T. etrida were “ dry,” two were “inter¬ 
mediate.” A dwarf Belenois mesentina was “ dry,” but a dwarf 
Catopsilia pyranthe and a dwarf Huphina nerissa were “ intermediate,” 
while a dwarf Teracolus Calais was actually of the wet-season form. 2 
Weather in Ceylon —1907-8. 
I add, as an Appendix to Chapter VII., an abstract of my notes 
on the rain during my visit. 
1907. 
Nov. 1. [Heavy rain at Colombo. Reported to me.] 
Dec. 25. [Shower about Christmas Day. Reported to me.] 
1908. 
Jan. 1. [Another shower about New Year’s Day. Reported to me.] 
„ 6. Thunder-shower: streets wet when we landed. 
„ 7. Mt. Lavinia. Some rain. 
„ 8. Kalutara—drops on leaves—few insects before 10.30 a.m. 
„ 11. Mt. Lavinia. Heavy thunder-shower. 
„ 15. Kandy. Rain most of day : heavy in afternoon and evening. 
„ 16. Kandy. Slight rain, thunder. 
„ 17. Kandy. Very slight rain. 
„ 26. Kandy. Rain all evening : not heavy. 
„ 27. Kandy. Dull day: everything wet; heavy rain, evening. 
„ 28. Kandy. Slight rain, evening. 
„ 29. Kandy. Slight rain in morning. 
Eeb. 19 and Feb. 20. [Heavy rain reported at Hatton.] 
„ 21. Kandy. Very slight rain, afternoon and evening. 
1 See Dixey, Trans. Ent. Soc. Land., 1902, p. 189; and Proc. Ent. Soc. Lond. % 
1904, pp. lii., liii. Also Col. N. Manders, Trans . Ent. Soc , Land., 1904, p. 701. 
? See a,bove, p. 68, footnote, 
