20 ME. G. T. BETHUKE-BAKEE : A REVISION OF THE 



Ambltpodia hainana Crowley. 

 Amblypodia hainana, Crowley, Proc. Zool. Soc. Lond. 1900, p. 508. 



Hah. Hainan. 



Expanse 56 mm. 



I have not been able to see this species, but it should be recognised without difficulty 

 by its large size, for it is about 10 millimetres larger than any specimen of the genus 

 that I have seen. 



Mahathala Moore. 



Mahathala Moore, Proc. Zool. Soc. Lond. 1878, p. 702 ; de Niceville, Butt. India, vol. iii. p. 282 



(1890). 

 Jpporasa Moore, J. A. S. B. vol. liii. pt. 2, p. 38 (1884) ; de Niceville, Butt. Ind. vol. iii. p. 224 



(1890). 



Wings broad, short. In the primaries the costal nervure is less than half the length 

 of the costa, terminating well in front of the apex of the discoidal cell; the first and 

 second subcostal and the upper discoidal nervules all have their bases about equidistant ; 

 the third subcostal nervule is short, rising nearer the apex of the wing than of the 

 cell ; the middle discocellular nervule is very short, straight, and outwardly oblique ; 

 the lower discocellular is nearly four times as long as the middle, concave, and nearly 

 straight. Second median nervule given off some little distance before the lower apex 

 of the cell ; first median bent downwards near the base. In the secondaries the costal 

 nervure is strongly sinuate and bent upwards at the end ; the first subcostal nervule 

 arises some -way before the end of the cell, and is strongly and somewhat evenly arched. 

 The upper discocellular nervule is straight and very oblique inwardly, whilst the lower 

 is likewise equally oblique inwardly, thus forming a < shape. The second median 

 nervule is given off almost at the juncture of the upper median, but just below it — i. e. 

 just in front of the lower end of the cell. The submedian nervure is nearly straight ; 

 the internal nervure short and sinuous. The abdominal margin is decidedly excised, 

 and thus forms a distinct anal lobe. The antennae are very short, about a third the 

 length of the costa. De Niceville (I, c.) says : — " Although Apporasa atkinsoni possesses 

 a tail similar to Mahathala ameria Hewitson, and the costa of the hind wing is also 

 somewhat similar, yet it is, I believe, nearer to Thaduka muUicaudata Moore than to 

 that species. It has the costa of the fore wing arched as in T. muUicaudata (con- 

 siderably more so than in M. ameria)." Doherty (J. A. S. B. vol. Iviii. pt. 2, p. 423) 

 says that " the genus Apporasa differs from Mahathala in the less acuminate apex of 

 the hind wing, in the egg (which is covered with triangles and tubercles instead of 

 quadrangles and spines, a difference which in this group is of small importance), and 

 in the more undulate margin of the hind wing" ; and he continues : — " But atkinsoni 

 when sitting on a tree-trunk has a marvellous resemblance to a patch of lichen, and 



