triphjENA orbona. 29 



spiracular broad stripe is an equally broad stripe of a 

 little deeper ground with darker and thicker freckles, 

 and a blackish spot. A blackish spot is also on each 

 ventral leg. (W. B., 1872, Note Book I, 165.) 



TrIPH/ENA prontjba. 

 Plate LXXV, fig. 1. 



On the 28th of August, 1873, I received from Mr. 

 W. H. Harwood a batch of eggs laid round the flower- 

 stalk of an umbel of Silaus pratensis. They were 

 closely laid together in even rows embracing the stalk, 

 which was covered with them for about three-quarters 

 of an inch in length, and for a quarter of an inch 

 round two of the foot-stalks. Each egg was circular, 

 rather flattened above and below, strongly ribbed and 

 reticulated, and when they arrived were a pale drab 

 colour, blotched above in the centre with pink ; in two 

 days the pink had gradually spread over the rest of 

 their surface, and on the 1st of September they 

 changed to greyish-pink, and to a leaden-grey on 

 the 2nd, but glistening as when first they arrived ; on 

 the 3rd they all hatched, and at first the young larvae 

 were but little more than one-sixteenth of an inch 

 long, with large dark brown head and plate behind it ; 

 the body brownish-grey, with minute blackish dots, 

 each bearing a fine dark hair. 



After twice moulting I began to identify them, and 

 by October 20th they were all of the ordinary dark 

 grey-brown forms, and were sent adrift. 



On 16th September, 1874, six larvae arrived from 

 Mrs. Hutchinson, which she had reared from eggs laid 

 on a reed stem about a fortnight previously at Wicken 

 Fen. Some of the eggs had hatched during the 

 journey to her, and she had kept the young larvae on 

 Triticum repens, and they had moulted once only before 

 they were sent to me to be named. 



On reaching me the larvae were three and a half 



