SEASONAL FORMS 587 
Feb. 24-Mar. 5. Port Antonio . Rained nearly every day or night of 
our stay. Heavy rain February 27th. 
Constant Spring. “A good rain eight days ago, and 
other showers since the earthquake (January 14th) 
nevertheless everything looked very dry. 
Panama. Country very dry. 
Caracas. I was informed “ last year was very wet, up 
to January 25th; since then it has been our dry 
season, though there was some rain last week. 53 
Caracas. Heavy shower late afternoon. 
„ Very heavy rain mid-day and afternoon. 
„ Heavy rain mid-day and afternoon—many 
hours. 
La Guaira . The road down showed traces of heavy 
rain within a few days. 
Tobago. Everything very dry, but was informed that 
there had been “ some nice showers at night during 
March.” 
Tobago. Very heavy showers. 
Trinidad. Heavy rain. 
„ A shower. 
Seasonal Dimorphism in India and Ceylon. 
With a view to seeing what light, if any, my fragmentary obser¬ 
vations in India and Ceylon during the winter of 1903-4 might 
throw upon this puzzling subject, I have adopted the following 
method:— 
In the Register, or Index, of my captures, I noted to every Pierine 
Dr. Dixey’s estimate of its seasonal character, and then made my 
own (far less weighty) estimates of the seasonal characters of the 
genera Precis , Melanitis , Mycalesis , and Yphthima , and finally analyzed 
the results for localities, or groups of localities. Without prejudice, 
I took Catopsilia gnoma to represent the dry-season form of C. 
pyranthe, and in like manner Catopsilia catilla and pomona to be 
dry-season forms corresponding to a wet-season form C. crocale . 
It must be borne in mind that such a classification is necessarily 
very vague, for while the extreme forms are easy to place it is most 
difficult to assess the numerous intermediate specimens. 
March 7. 
March 11. 
March 20. 
March 21. 
March 22. 
March 23. 
March 29. 
April 4. 
April 8. 
April 12. 
April 14. 
