BUTTERFLIES. 123 



40. Lethe (Debis) sekbonis, Hewitson. 



Occurs only at high elevations, 7,000 to 9,000 feet eleration, from 

 June to SejJtember, in heavy forest. 



41. Lethe europa, Fabricius, 



Occurs rarely in the low outer valleys and Terai. It is found also 

 at Foochau in China. 



42. Lethe dyrta, Felder. 



At low elevations only, and is rather a scarce insect in Sikhim. 

 I have taken it in the Duars in dead winter at an elevation but a few 

 hundred feet above the sea. It is far commoner in the Western 

 Himalayas. It occurs right across China to Foochau. 



43. Lethe rohkia, Fabricius. 



Common almost throughout the year at low elevations. The 

 spring brood is much more brightly red-coloured on the underside 

 than the broods occurring later on in the year. It is a common 

 species in Western, Central, and Eastern China. 



44. Lethe dinarbas, Hewitson. 



Occurs in forests at 7,000 to 9,000 feet, and is not particularly 

 rare, swarming all along the ridge from Songchongloo to Pankasarri 

 in Baling. Mr. Moore in " Lepidoptera Indica," vol. i, page 266, 

 refers the figure I gave of this species in Journal. Asiatic Soc, 

 Bengal, vol. Iv, pt. 2, page 250, pi. xi, figure 4, female (1886) to 

 L. hyrania, Kollar. Mr. Moore quite correctly limits that species to 

 the Western Himalayas, and L. cUnarhas to the Eastern Himalayas 

 and Assam, though Colonel Swinlioe (as I believe quite erroneously) 

 records both from the Khasi Hills. My figure was taken "from a 

 specimen froni native Sikhim in Mr. Otto MuUer's collection," 

 and is a true L. dinarhas. 



45. Lethe brisanda, de Nic^ville. 



Described from near Buxa iu Bhutan. It is not improbably a 

 Sikhim species also. 



46. Lethe (Dionana) Margarita, Elwes. 



A rare species obtained by the native collectors only near Buxa, 

 Bhutan. It is, I believe, the largest known species of the genus 

 Lethe. 



47. Lethe (Tansima) verma, Kollar. 



Distinctly rarer than L. rohria, Fabricius, which it most closely 

 resembles. It is found from 4,000 to 8,000 feet almost throughout the 

 year. It is recorded from Western China by Mr. Leech. 



48. Lethe (Sinchula) sidonis, Hewitson. 



A common species from April to November on the road round 

 Birch Hill in Darjeeling, and on the cart road between Ghoom and 



