486 sphingid^:. 



distinctly marked on the first segment, thin on the posterior 

 segments ; two rows of dorsal dots as in the allies of Rhagastis 

 velata. Cavity of palpus almost closed. Expanse : $ 80- 

 100 mm. 



$. Tenth abdominal segment of the same type as in R. velata, 

 acuta etc. Harpe (fig. 123 A) compressed, dorsal margin 

 notched, apex acute, curved upwards. Penis-sheath (figs. 123 B, 

 C, D) : apical edge produced at both sides into a dentate 

 process, the right process irregularly toothed, the teeth 

 prominent, the left process long, with minute teeth at both 

 edges at end. 



Hab. E. Himalayas (Sylhet) to Borneo and Java. Rare * 

 early stages unknown. 



181. Cechenena helops helops (Walk.). (Fig. 123 E-H, 



genitalia) . 



Philampelus helops, Walker, 1856, p. 180 (" Natal," err. ; Moul- 



mein, teste Boisduval). 

 Chserocampa helops, Hampson, 1892, p 92 (partim). 

 Cechenena helops helops, Roths. & Jord., 1903, p. 801 ; Seitz, 1929, 



p. 570 (non t. 68 a). 



Imago. — ^$. Head, thorax and abdomen olive-brown ; 

 sides of metanotum tawny, centre grey, this grey patch 

 extended on to mesonotum and abdomen ; first and second 

 segments of latter with black side-patches. Fore wing 

 greyish-brown ; a broad subbasal umber- or mummy-brown 

 patch with pale edge ; a black stigma preceded by another 

 small spot ; area beyond cell suffused with brown ; a black 

 broken apical line borders a tawny olive -brown costal band 

 which stops sharply at R 1 . Hind wing smoky-black with 

 a pale patch at anal angle. Underside ochreous suffused 

 and speckled with black. Cavity of palpus sharply defined. 

 Expanse : $ 104-112 mm., $ 126 mm. 



$. Tenth tergite flat at end, truncate, very feebly sinuate ; 

 sternite compressed, outline of under surface strongly curved 

 in lateral view. Process of harpe (fig. 123 E) almost cylin- 

 drical, apex obtuse, rounded. The two processes of penis- 

 sheath (figs. 123, F, G, H) much shorter than in segrota, of 

 nearly equal length, dentate, somewhat projecting aw r ay 

 from sheath. 



?. Side-edges of vaginal plate rather sharply raised ; 

 vaginal cavity large, the edge feebly raised, lyre- shaped. 



Hab. E. Himalayas (Sikkim ; Khasi and Jaintia Hills) 

 to Malaya. Early stages unknown. 



