LIFE-HISTORY OF COLIAS HYALE. 167 



in some such manner as many of the long-legged spiders do ; 

 such a position it took up very readily. This grasshopper seems 

 always to affect the same kind of grass — a soft pale green species 

 that grows in great tufts. On the evening of Aug. 7th, in one 

 of the rides at Eamnor in the New Forest, I found some numbers 

 of the singular wingless grasshopper, Thamnotrizon cinereiis, one 

 or two taken being still immature. After being killed (as was 

 supposed), eviscerated, and set, two were found after several 

 hours to be alive as regards the fore part of the body — a striking 

 instance of vital tenacity. On Aug. 13th, near Ehinefields, a 

 very large female of the same species was captured. On a broken 

 piece of cliff-side between Lulworth and Weymouth, I took, on 

 Aug. 18th, two females of Platycleis grisea, this being my first 

 capture of the species, which is not, I believe, a specially scarce 

 one, and is certainly conspicuous. P. hrachyptera was, as usual, 

 plentiful at the end of the summer on Esher and Oxshott 

 Commons. 



Of the Grillodea (Crickets), the only species that I met with 

 was Nemohius si/lvestris, which was found in several distinct 

 districts in the New Forest, its only British home. No doubt it 

 is well distributed there, its favourite haunts appearing to be 

 amongst dead leaves on the banks of streams, but well up above 

 the water. 



Kingston-on-Thames: May, 1901. 



LIFE-HISTOKY OF COLIAS HYALE. 



By F. W. Frohawk, M.B.O.U., F.E.S. 



(Continued from 'Entomologist,' vol. xxv. p. 274, 1892.) 



From the observations I carried out respecting the earlier 

 stages of Colias hyale in 1892 and 1893, I then felt convinced 

 that this species hybernated in the larval condition, as stated 

 in the ' Entomologist,' 1893, vol. xxvi. p. 146. I am now able 

 to verify this to be the case from observations made during the 

 past eight months upon a very large number of C. hyale larvae 

 possessed by friends and myself, and by their assistance I have 

 been able to complete the life-history of this most interesting 

 species. 



The large number of larvae I had last autumn, which hatched 

 from the ova at the end of August, were all subjected to a high 

 temperature with much sunshine during September ; but, not- 

 withstanding, they grew very slowly, and towards the end of 

 the month they ceased feeding and entered into hybernation, 

 being then quite small, the majority measuring about 5- in. 

 long. On December 21st I placed many of them in the sun, 



o2 



