EDWARDSIA W- ALBUM. 161 



segmental incisions into a number of curves, so as to give a crenulated 

 appearance ; the sides sloping steeply upwards therefrom to the dorsal 

 ridge, and showing conspicuously the small, shiny, flesh- coloured spiracles; 

 the dorsal ridge on either side with a raised tubercular area carry- 

 ing i and ii, and occupying almost all the area of this part of the 

 segment from front to back ; the main tubercular hairs, i and ii, long, 

 white, with dark tips ; many other hairs similar but much smaller ; it 

 is just possible that a well-marked supraspiracular hair, a little more 

 forward than the line of spiracle, represents iii, and there is a small brush 

 of postspiracular hairs, but, without tracing these from their predecessors 

 in first skin, their homologies are doubtful ; iv and v appear to be situated 

 on a common pad on the lateral flange ; the long hairs here white ; the 

 dorsum between the longitudinal ridges much flattened and depressed ; 

 the dark green double mediodorsal line beneath skin ; skin-surface 

 covered with tiny points carrying white hairs ; the lateral flanges con- 

 tinued round the anus, to which the 9th and 10th abdominal segments 

 slope rapidly ; the anal area covered with long hairs, forming at edge 

 a sort of fringe. Laterally : The main feature is the pale lateral 

 longitudinal flange, from which the sides slope upwards to the dorsal 

 ridge, on the edge of which the long setae, i and ii, stand out conspicu- 

 ously, ii being longer than i, the small hairs on the tubercular pad of 

 i and ii standing up from a sort of cushion, each separated from the 

 others by the segmental incision. The tiny flesh-coloured spiracles 

 are conspicuous, the prothoracic very low down on the lateral flanges, 

 the others well above, but the seta of iii appears not to be traceable as 

 a separate hair ; iv and v appear to be on a common pad, beneath the 

 spiracle, on longitudinal flange, whilst two more pads placed more 

 ventrally carry vi and vii, the latter multiple-haired, all the hairs, 

 however, white and slightly serrated ; the prolegs placed still further 

 under. The lateral view shows clearly the projection of the 10th 

 abdominal with its fringe of hairs extending well out (as a sort of 

 cover) above the anal prolegs. Ventral view: This is very striking; the 

 projecting edge of the prothorax forms a continuation of the lateral 

 longitudinal flange, the whole forming, with the ventral surface, a 

 flattened oval with crenulated edge, from which a hairy fringe extends, 

 the hairs on the sides being connected with the tubercles iv and v, those 

 in front the dorsal row of the prothorax, and at the back the projecting 

 tubercular hairs of the anal segment. From the flattened venter 

 project the prolegs, rather more glassy- green and less yellow- green 

 than the ground colour of the body ; outside the prolegs are a series of 

 similarly-tinted glassy-green cushions carrying the tubercular hairs of 

 vii, whilst towards the front the retractile head and black true legs 

 show as a rough horseshoe-shaped black mark on the same level as the 

 ventral surface ; the withdrawal of these is very remarkable. The glassy- 

 white flange of the foot of the prolegs is divided into two areas, a front 

 and back, plentifully supplied with exceedingly minute brown hooks 

 (Tutt, May 22nd, 1905). (2) A larva in penultimate skin, 8mm. in 

 length. In form it corresponds with our ideas of a typical Lyca?nid 

 larva in having a lateral margin or flange all round, two lateral slopes 

 with a median narrow dorsal level, these combining on the 7th, 8th, 

 9th, and 10th abdominal segments into one surface, sloping in all 

 directions to the flange, and narrowing somewhat equally backwards ; 

 the front maintains its width to nearer the extremity owing to the 

 bending down of the prothorax, across which the flange runs, and the 



