88 SPHINGID^]. 



and Sikkim in the harpe (fig. 16 H) bearing a ventral tooth 

 close to the apex, variable in size. 1 Expanse : 64-68 mm. 



Hob. W. Himalayas (Dharmsala ; Simla ; Mussooree). 

 We have bred this subspecies in the localities mentioned 

 above, where it is common locally at elevations from 4,000 

 to 7,000 feet, in areas of heavy rainfall. 



The early stages are so similar to those of P. fo fo that we 

 were unable to distinguish any difference. The food-plants 

 of the two subspecies are the same. The larvae of this sub- 

 species were first discovered by Col. J. D. Campbell, D.S.O., 

 in Mussooree in 1923, but all those obtained during this and 

 the following seasons died,. Finally, in 1926, we obtained 

 a few moths from a large number of eggs and larva?. Eggs 

 are not laid until the rainy season is well established. The 

 tangled mass of vegetation in which the larvae live is drenched 

 continually by heavy rain, and in captivity they require 

 a very liberal supply of water to be sprinkled on the food- 

 plant. Curiously enough, we did not have the same difficulty 

 in breeding the larvae of P. fo fo, though they were obtained 

 from Cherrapunji, in the Khasi Hills, the wettest place 

 in the world. 



11 b. Pseudodolbina fo fo (Walker). (Fig. 16 C-G, genitalia • 

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



Zoniliafo, Walker, 1856, p. 195 (N. India). 



Pseudosphinx fo, Butler, 1881 B, p. 16, pi. lxxxi, fig. 9 ; 



Hampson, 1892, p. 104. 

 Pseudodolbina fo, Roths. & Jord., 1903, p. 101. 

 Pseudodolbina fo fo, Jordan, 1926, p. 379 ; Seitz, 1928, p. 530 r 



t. 60 e ; Scott, 1931, pi. h\ fig. 4 (larva). 

 Pseudodolbina veloxina, Rothschild, 1894 A, p. 27, pi. vi, fig. 18 



(Khasi Hills). 



Imago. — <^$. Head, thorax, abdomen and fore wing olive- 

 brown, deeper in colour in fresh specimens, less yellow than 

 in sequalis, much dusted with grey scales ; mesothoracic 

 tegula with a short black streak ; anterior segment of abdomen 

 with large yellow side-patches. Fore wing crossed by sub- 

 basal, antemedian, median and postmedian double waved 

 black lines ; a large white stigma. Hind wing dark brown. 

 The yellow side-patches are larger th&nin sequalis , yellow colour 

 of palpus more sharply defined, fore tarsus more extended 

 yellow on upperside, stigma of fore wing larger ; the inter- 

 space between the two lines of fore wing proximal to stigma 

 not filled up with black scaling, and the pale parts of fringe 

 of both wings more yellow than in sequalis. Spurs of hind 

 tibia unequal, long terminal one about one -third longer than 

 the other. Expanse : 64-68 mm. 



$. Harpe (fig. 16 E) ending in a single, rather prominent, 

 pointed process directed dorso-distad. Tooth of penis- 

 sheath (fig. 16 F) a little longer than in sequalis. 



