222 BRITISH LEPIDOPTERA. 



anus and anal prolegs are orange-yellow ; the plates on the outside 

 of prolegs colourless ; the reticulation continued ventrally on the ist 

 abdominal segment. (3) Head red ; the skin of the prothorax, medio- 

 dorsal line, caudal horn, lateral flange, true legs, prolegs, anus, and anal 

 prolegs deep red in colour ; the lateral spots on either side of each seg- 

 ment (instead of being white or yellowish-white) deep yellow ; 

 ground colour of dorsal area very yellow ; the black reticulation and 

 black anterior subsegments strongly developed ; the ground-colour 

 of spiracular and subspiracular areas white ; the ventral ■ surface 

 red, with a yellow spot in front of each of the dark ventral 

 abdominal spots. Fifth instar (full-grown) : 3ms. -4ms. in length. Much 

 variation exists. The wrinkles in the skin (noticeable in newly-moulted 

 larva in this instar) have disappeared, the larva is sleek, smooth, 

 and shiny ; the head (which is large in proportion to size of body 

 directly after moult) comparatively small, and there is a distinct 

 snout-like appearance about the head and thorax as in the so-called 

 Chcerocampid Eumorphids. Under a lens the whole of the pale 

 (white, yellow, or orange) spots appear to be set in the black 

 ground-colour. The head and segments are covered with very fine 

 dark hairs (shagreen-hairs), the bases of which are very conspicuous 

 in the pale spots just alluded to. The ocelli are placed very low 

 down on the cheeks on the dark area that forms the upper boundary 

 of the labrum. The spiracles make a very fine wide double lip, 

 have a very conspicuous lumen, and are placed transversely on 

 the 1st subsegment of the abdominals, above the lateral flange, 

 at the posterior and inferior border of the lower (paler) of the 

 two lateral spots on this subsegment. The anal segment, anal prolegs, 

 and ventral prolegs are covered with short bristly hairs, and there are 

 some short hairs of the same colour as the skin on the true legs. The 

 black hooks of the legs and prolegs are sufficiently strong to tear the 

 epidermis from one's fingers (Tutt. Described from Evolena larvae 

 August 10th, 1899). Another larva quite fullfed in fifth instar* : 

 The head red rather than red-brown, shining, almost smooth, al- 

 though sparingly sprinkled with minute pale yellowish hairs ; mouth- 

 parts black, edged above the labrum with yellow, and fringed with 

 longer pale hairs ; two small black patches at bottom of cheeks 

 look as if part of mouth ; on edge of each patch are 5 red-brown ocelli 

 in form of a concave curve (the 5th very low down at base of 

 antenna), a 6th ocellus in normal central position ; the antennae 

 short, 2-jointed, pale, on a pale conical base, the upper part of 

 which is movable with the antenna, the terminal hair probably 

 homologous with another joint. The prothorax small, but forming a 

 hood over head, broadly red centrally (commencement of the 

 mediodorsal line), but with the ground-colour black, shiny, and 

 having a yellow transverse patch at the front, on each side of 

 the mediodorsal line ; prothoracic spiracle formed of two closed 

 creamy-white, closely appressed, lunular halves, with fine, slightly 

 raised, black external rim ; an oblique, red, tumid, muscular flange 

 on each of the thoracic segments, each connected with that on 

 the succeeding segment ; ventrally, the thorax is pale reddish, 



I his description was mule quite independently of, and earlier than, the 

 preceding. In such an interesting ami variable species we have no hesitation in 

 giving our readers as much material for comparison as is available. 



