THE COMMON BUTTERFLIES OF THE PLAINS 01 INDIA. 793 



Lastly, the eggs. There are two large classes of these, those without meri- 

 dional ribs and those with them. These extremes are connected, however, by 

 some forms that have the ribs extremely numerous and so fine that it is impos- 

 sible to tell without a lens that they are there at all. Amongst these smooth 

 eggs it is difficult to make any classification, differences being hard to appreciate 

 If, indeed, there are any. It would require special study. Smooth eggs belon'' 



to the genera Baoris Caltoris, Chapra, Telicota, Sancus, Udaspes, Hyarotis, 



Notocrypta, lambrix, Taractrocera. 

 . Those that are known to have ribbed eggs are more numerous and some of 



the genera Hesperia, Ismene, Bibasis, Hasora, Badamia, Celoenorrhinus, 



Tagiades, Odontoptilum, Abamtha, Sarangesa, Tapena, Cupitha, Suastus, Baracus 

 Plastingia, Aeromachus, Gangara, Matapa. 



A classification might be essayed on the knowledge gained as follows : — 



Ribbed eggs. 



Ribs coarse, strong. B:H.::10: 7; dome-shaped. The 'ribs beaded, anasto 

 mosing, about 20 in number of which about half reach the circumference of 



the micropyle-surf ace' ; larva emerging through the top Genera Hesperia, 



F., Thanaos, Boisd., Spicdia, Swinh. 



Ribs fine, clear, minutely beaded, not anastomosing, from 13 to 24 in number 



of which half reach the micropyle circle. B:H:ilO:7: dome-shaped 



Genera Ismene, Bibasis, Hasora, Badamia, Celcenorrhinus, Baracus, Ampittia. 



Ribs extremely fine and very numerous, as many as 50, visible with difficulty 

 even with a lens ; the surface obscured by soft hairs from the anal segments of 

 insect ; shape that of a dome, H : Bl '.190 : 55 Genera, Gangara, Matapa. 



Ribs very coarse, about 14 in number from base to a raised circular ring 

 of large diameter surrounding the micropyle ; colour red, the ribs white ; B : H:; 

 10 : 6. . . .Genera Cupitha, Suastus. 



Eggs smooth or practically so. 



Eggs limpet-shajjed, widest at base and, into the bargain, resting on a narrow 

 basel band which slopes outwards and is extremely finely ribbed (the band only, 

 which band, is besides, semihyaline ; B : H : : 100 : 65 ... . Genera Hyarotis, 

 Notocrypta, Udaspes, Sancus, lamhrix. 



Eggs high-dome-shaped, the surface celluloir under lens or even obscurely 

 many-ribbed, or lumpy ; B : H". '.10 : 8. {Telicota), or as 10 : 65 for the rest. 

 .... Genera Telicota, Baoris, Taractrocera. 



There are also occasional generic differences sometimes though they are 

 not very helpful towards classification in all probability ; but, on the whole, 

 the eggs are fairly characteristic of the groups based on neutration, larvae 

 and pupa?. Further study is necessary of a much larger fauna than that at 

 present available. 



(To be continued). 



