150 SPHINGIDJE. 



and thick, nearly cylindrical. Horn very short, thick at base 

 and tapering sharply to a blunt point. Surface of body dull ; 

 one or two transverse rows of tubercles along each secondary 

 ring, these tubercles larger and more closely set on the front 

 margin of segment 2 ; a subdorsal stripe of large tubercles on 

 2 to 4 ; a line of tubercles along each oblique stripe, those on 

 the stripes of 5 to 9 of equal size, those on the stripe of 10 

 very small, and those on the stripe of 11 larger than those 

 on the stripes of 5 to 9. Horn covered with pointed tubercles : 

 a line of tubercles at base of ankle of proleg. 



Coloration. — Head bright green with the shining tubercles 

 yellow ; a broad bright blue stripe from the apex of each lobe 

 to the base of antenna, separating face from cheek ; labrum 

 translucent yellow, ligula and base of mandible yellow, 

 tip of mandible black ; basal segment of antenna yellow, 

 the remaining segments pale chestnut ; eyes black. Body 

 pale green, the tubercles yellow ; the oblique stripes narrow, 

 yellowish -green, each crossing two segments and reaching 

 nearly to the dorsal line, the tubercles on the stripes yellow. 

 Horn green with green tubercles ; true legs pale flesh-colour, 

 a reddish ring at the base of each and the end-segment reddish ; 

 prolegs and claspers green, the tubercles at base of ankles 

 chestnut, feet pale reddish-brown. Spiracles oval, reddish 

 with a white stripe down each side of the central slit. 



There is another form of the caterpillar in which the ground- 

 colour is yellow instead of green, with a triangle of pale purple 

 above each oblique stripe ; a broad, pale purple, subspiracular 

 stripe crossed by the oblique stripes. Length 100 mm. 



Pupa. — Very much like that of undulosa. 



Habits. — Food-plant : Robinia pseudo-acacia Linn., family 

 Leguminosse. The habits are similar to those of undulosa. 

 Hibernates in the larval state, the moths emerging in the 

 spring two or three weeks after pupation takes place. The 

 species is rare, and there are very few imagos in collections. 

 We have two specimens which were caught sitting on a 

 white -washed wall at Simla, so this species appears to be 

 attracted by light. 



33. Clanis bilineata bilineata (Walk.). (Fig. 31 A-E, genitalia ; 

 PI. II, figs. 5, 6, larva). 



Basiana bilineata, Walker, 1866, p. 1857 (Darjeeling). 



Clanis bilineata, Butler, 1881 B, p. 14, pi. lxxxi, fig. 4 (Darjeeling) - r 



Roths. & Jord., 1903, p. 213 (part,). 

 Ambulyx bilineata, Hampson, 1892, p. 80. 

 Clanis bilineata bilineata, Jordan, 1911. p. 239, t. 37 c; Seitz r 



1928, p. 537. 



Imago. — <£$. Mid- and hind tibiae white above ; the latter 

 in £ as long as, in $ 2 mm. longer than, first tarsal segment : 



