100 SPHINGID^E. 



Pupa. — Similar in shape to that of M. dyras dyras, except 

 that segment 14 has a lateral cushion-like tumidity on each 

 side : the frons sloping ventrad and with five transverse, very 

 rugose ridges on each side of the depressed dorsal line, these 

 ridges increasing in height forwards, the anterior one forming 

 a prominent transverse crest at the extreme front of the pupa ; 

 tongue broad, short, reaching to little more than one-third 

 the length of wing-case ; antenna and fore leg reaching to 

 one-half the length of the wing-cases, mid-leg to two-thirds ; 

 a narrow coxal piece. Surface shining ; sides of frons, 

 vertex and eye smooth ; anterior portion of each abdominal 

 segment tumid, rugose and pitted ; the rest of the surface 

 of the pupa smooth. The spiracle of 2 a wide slit, bordered 

 by the thickened hind margin of 2 in front and by the 

 thickened front margin of 3 behind ; the remaining spiracles 

 oval, rising slightly from a shallow depression, the central 

 slit again depressed ; in the $ pupa the sex-marks consist of 

 a small elongated pit in the middle of 12 and a similar pit at 

 the front margin of 13 ; the clasper scar a deep lineal depres- 

 sion, toothed along each edge, the cushion-like tumidities 

 on 14, mentioned above, bordering it on each side. Cremaster 

 conical, with an ear-shaped cavity on each side of the base ; 

 the tip shortly bifid, the arms slightly diverging and each 

 bearing a seta ; the base of the cremaster separated later o- 

 ventrally from the cushion-like tumidities by a deep furrow ; 

 surface shining and very rugose. Colour rich chestnut, the 

 frontal ridges, rugosities on the abdominal segments, spiracles 

 and cremaster black. Length 28 mm. ; breadth 10 mm. 



Habits. — The habits of the larva the same as those of dyras, 

 the usual food-plant being Sterculia villosa Roxb., family 

 Sterculiacese, but it also feeds on Helicteres isoraLinn., of the 

 same family, and Bombax malabaricum DC, family Malvaceae, 

 and Greivia tilidefolia Vahl., family Tiliacese. The moth 

 rests in the same position as that of dyras. It has not been 

 observed in the wild state, and no wild g$ came to our bred $$. 



47. Marumba bengalensis Hamps. (Fig. 40, <$ holotype). 



Marumba bengalensis, Hampson, 1912, p. 1270 (Bengal : Chota 

 Nagpur. Kalunga, $). 



Image. — <$. Head, thorax and abdomen pale red-brown 

 tinged with grey, the dorsum of thorax with darker stripe ; 

 frons dark red-brown at sides. Fore wing pale red-brown 

 tinged with grey ; an oblique slightly incurved antemedian 

 line ; two median lines ; some dark suffusion on inner median 

 area ; a pale elliptical discoidal spot defined by fuscous and 

 extending to well below cell ; a dark line just beyond cell, 

 oblique below R 1 ; postmedian line dark, incurved to below 



