GURELCA. 335 



covered with minute decumbent hairs ; horn covered with 

 small tubercles of medium length, stout at base, tapering 

 evenly to a blunt point, the distal third strongly up-curved. 



Coloration. — Head dusky-brown ; hairs black ; a pale buff 

 stripe separating face from cheek ; false clypeus edged narrowly 

 with white ; antenna white, basal segment with a pink patch 

 on outer face, end-segment tinged with pink ; mandible 

 black ; eyes black. Body very variable in ground-colour 

 and markings ; the ground-colour may be greenish, greyish, 

 yellowish or brown ; a transverse, chain-like row of white 

 dots, each dot surrounded with chocolate and bearing a white 

 decumbent hair, on each secondary ring ; in one common 

 form the ground-colour is grey marbled with brown ; dorsum 

 suffused with fuscous ; a dorso-lateral stripe, narrow and 

 white on segments 2 to 4, broad and yellow on 11 and 12 

 to base of horn ; 2 to 5 below the dorso-lateral stripe, 12 below 

 the oblique stripe and the whole of 13 and 14 dark chocolate ; 

 whitish oblique stripes on 5 to 1 1 ; a triangular dark chocolate 

 patch below the oblique stripe on each of 6, 7. 10 and 11, 

 but these patches sometimes orange as in the 4th instar. 

 Horn dusky-brown, the tubercles shining black, the hairs 

 white ; venter chocolate ; legs chocolate dotted with white, 

 end-segment pale yellow ; prolegs chocolate dotted with 

 white. Spiracles oval, flush, white, edged narrowly with black, 

 and a dark, transverse, central smudge. Length 50 mm. ; 

 breadth 7*5 mm. ; horn 7 mm. 



Pupa. — Elongate-ovoid, head bluntly rounded and of less 

 diameter than body ; segments 12, 13 and 14 form together 

 an equilateral cone ; antenna shorter than fore leg ; a narrow 

 coxal piece. Surface shining ; head and thorax very super- 

 ficially lined like cracked lacquer ; abdomen shallowly, 

 sparsely pitted with small pits ; sculpturing on segment 4 

 consisting of a raised, subdorsal, elongate, transverse marking ; 

 eight very narrow, parallel, low ante-spiracular ridges on 

 segment 9. Spiracle of 2 a narrow slit covered by a narrow 

 transverse curved lobe projecting from the front margin 

 of 3 ; other spiracles oval, slightly convex, with a coarse 

 central slit. Cremaster triangular, very short, with a short 

 subcylindrical shaft branching into four very short, irregularly 

 disposed branches, each branch ending in two slightly curved 

 hooks. Colour very pale bone-yellow ; head and thorax 

 so suffused with light fuscous that the ground-colour appears 

 only as irregular lines ; wing-case fuscous, the veins only of 

 ground-colour ; tongue, antenna and legs transversely barred 

 with fuscous ; a trapeze formed of four black spots on dorsum 

 of head ; a lateral black spot on 2 ; thorax with a small, 

 black, subdorsal spot and a longitudinal, dorso-lateral series 

 of three black spots ; abdomen with a black, broken, dorsal 



