;|70 THE entomologist's RECORD. 



due to the flatness of the egg— it is nearly an eighth of the 

 diameter of the egg in width, or, the inner egg is only three- 

 quarters of the diameter of the shell. I have observed more 

 distinctly in this species, that the moth in laying smears a 

 cement on the surface on which she lays the egg, often extend- 

 ing the width of the egg itself beyond the surface that the egg 

 covers. The inner egg presents a series of brown spots 

 (PI. VIII., fig. 5), a series of very narrow marginal ones and 

 two inner rows, the spots are not round, but angular, usually 

 pentagonal, clearly indicating that if only a little more 

 developed they would coalesce and reduce the pale area to 

 rounded spots as in alni or accn'^. The brown spots differ in 

 different specimens, the extremes being merely indicated dots 

 that might easily escape detection, and on the other hand they 

 are so large as to occupy nearly as large an area as do the pale 

 spots in accris or alni. The specimen figured is about an 

 average, but those with nearly evanescent spots are the least 

 frequent. The ribs are 66 in number, and do not differ in 

 structure or arrangement from the other species. 



The newly-hatched larva presents the same pale segments as 

 alni, e.g., 3.4 and 11 ; but the tendency of 10 to be pale in 

 alni is not observed in megacephala. 



The head is black, the general colour rufous, except 3.4 and 



II, which are very pale, 3 and 4 are also very small and narrow 



in the newly-hatched larva, 11 is low and flat, but projects 



laterally. The tubercles are large raised bosses, paler than 



the rest of the segment, but without very defined margins. 



Each tubercle with one hair, dark basally and paler towards 



the tip, I mm. in length, the larva itself being 2 mm. The 



blackness of the hairs is very conspicuous on the pale 3rd and 



4th segments, on the nth they are shorter and paler than 



elsewhere, the size of the sub-spiracular tubercles is what gives 



this segment the appearance of width, or at least the width of 



the segment forms a boss on which the sub-spiracular hair 



(and tubercle ?) stands. The 2nd segment has a central flat 



hairless scutellum with three tubercles on either side, two in 



front and one behind. Seen laterally the larva is pale whitish 



or fuscous with a brown back from 5-10 and on 12 and 13, 



the dorsal tubercles showing as paler bosses out of the brown 



area ; on 12 and 2 the hairs exceed i mm. in length. When 



full-fed in this (ist) skin (PI. VI., figs. 5, 5a), the tubercles are 



distinctly separate and but little angled, on 12 they have the 



usual cruciform arrangement, but are small, circular and wide 



