300 CKAMBUS GEN1GULEUS. 



By the 13th of April the fresh turf had become 

 greatly ravaged, and the larvae were rapidly maturing, 

 two at this early period having already spun up ; and 

 a further examination at the end of the month proved 

 them to be full-fed and all spun up, after converting 

 their galleries into cocoons, wherein they remained 

 (while the grass flourished) for the three following 

 months. The moths appeared at intervals, two or 

 three at a time, from the 2nd to the 25th of August. 



The egg of Gr ambus geniculeus is roundish-ovate in 

 shape, the shell rather strongly ribbed and reticulated, 

 and slightly glistening; its colour, when first laid, is 

 yellowish-white, but changes in a few days to salmon 

 colour, afterwards to pinkish-red, and a few hours 

 before hatching again changes to a dark pinkish-grey. 



The newly-hatched larva is of a rose-pink colour, 

 with a blackish head and a brown plate on the second 

 segment, and when about the age of five months it is 

 half an inch long, of a very dingy reddish-brown or 

 greyish-brown colour, with blackish head, black plates 

 and spots, altogether darker than it afterwards 

 becomes. 



The full-grown larva measures five-eighths of an 

 inch in length, and is moderately stout in proportion, 

 cylindrical, though tapering a little at the hind 

 segments ; the head, full and rounded, is a trifle less 

 than the second segment, which is rather long ; each 

 segment after the fourth has a deepish wrinkle across 

 the back. 



The colour of the head is shining black with 

 reddish-grey margins to the lobes on the face, a 

 transverse streak of grey just above the mouth, and 

 the papillae paler grey ; the ground colour of the body 

 is reddish-grey or light brownish-grey, darkest on the 

 thoracic segments, paler behind where it is slightly 

 tinged with ochreous, and palest on the belly ; on the 

 second segment is a broad semilunar black shining 

 plate dorsally divided by a line of grey ; a dark dorsal 

 line is visible through the dull skin, which is greatly 



