104 THE ENTOMOLOGIST. 



ground, and this is edged on either side with a paler line than 

 ground. A conspicuous sub-dorsal stripe of pale greenish-white, 

 sometimes appearing yellowish, is continuous throughout, and 

 terminates on anal flap. This stripe is edged above and below 

 with a band of darker green than ground, and this darker green 

 is again edged with lighter than ground. The spiracular line 

 is light yellowish -green, but not conspicuous. On it are situated 

 the spiracles, which are of a rusty tinge edged with lighter. 

 The spiracular line is edged above with a green band of darker 

 colour than ground. There is a subspiracular skinfold, and this 

 with ventral area is of uniform ground-colour ; legs and clas- 

 pers of uniform ground-colour. There are a few very in- 

 conspicuous greyish-brown dots in region of spiracles, and 

 very fine short hairs generally distributed over larva. When 

 walking, larva has that trembling movement of anterior segments 

 so characteristic of geometer larvae, and is very lethargic in its 

 movements. Larv^ were fed up throughout outdoors on a 

 growing plant of Brachypodium sylvaticum. They were brought 

 indoors early in November, when five larvse had formed hyber- 

 nacula, about an inch long, by binding together edges of a leaf 

 with silken threads, one having attached itself to both a leaf and 

 the muslin. They were kept in a cold room all the winter. On 

 Feb. 10th, 1907, they were removed, together with their hyber- 

 nacula, into a smaller pot, which was covered by a glass cylinder 

 with muslin across top. This disturbance caused one larva to 

 come out of its hybernaculum ; this was the one attached to the 

 muslin — it wandered about in a lethargic manner and finally 

 rested on the muslin covering top of cylinder, where it remained 

 three or four days, and afterwards was found on the surface of 

 the earth in a very comatose condition. At this period the larva 

 was a little reduced in length from the time when drawn, name- 

 ly, September 7th, 1906. The ground-colour was pale creamy- 

 white ; medio-dorsal stripe rather pale chestnut-brown, but 

 darker than ground-colour ; the subdorsal stripe paler than 

 ground-colour, inclining to a yellowish tinge, and edged on either 

 side with pale chestnut-brown ; the spiracular band is of simi- 

 lar colour, but only a very little darker than ground, the spiracles 

 showing dark against it. There is a row of dots above spiracles, 

 in size and colour resembling them, and two similar longitudinal 

 rows on dorsal area. Head dull ochreous-grey, inclining to a 

 greenish tinge as compared with body, with a dark brown line 

 across top ; ocelli black ; mandibles dark brown. Surface dull 

 throughout, including head, and densely clothed with very short 

 hairs. This larva, after wandering about restlessly for several 

 days, finally fixed itself to muslin covering top of cylinder on 

 March 10th, 1907. It changed to a pupa on March 20th, 

 attached at anal end to a silken pad, and with a silken thread 

 around waist. Two more larvae emerged from their hybernacula 



