Orthoptera in the British Museum. 109 
strongly conical in CG. dlustris and with apex truncate in 
C. insignis. One of the Hainan males has black spots on 
the elytra obliterate, but the form of its subgenital plate 
leaves no doubt that it belongs to C. insignis ; Prof. 
Sjostedt informs me that one of Thunberg’s types, which 
are all females, also has unspotted elytra. 
British Museum specimens: Buidwan, 1 2 (Walker's 
type); 1 2 without locality (Walker’s type); Notai, Hainan, 
5. vu. 1903, 7 3g, 3 29, 1 larva; Amoy, China, 1 3. 
2. Choroedoeus illustris (Walk.). 
1870. Heteracris illustris Walker, Cat. Derm. Salt. B. M., 
lv, pp. 662, 663. 
1910. H[eteracris] allustris Karby, Syn. Cat. Orth., i, 
p- 555, no. 14. 
1914. Heteracris alustris Kirby, Fauna Brit. India, Acrid., 
p. 263, no. 323. 
British Museum specimens: 8. Hindostan, 1 9 (Walker's 
type); India, 2 gg, 1 9 (H. M. Lefroy). 
The specimens sent by Prof. Lefroy agree perfectly with 
Walker’s type in all details, and there is no doubt as to 
their identity. 
3. Choroedocus (?) robustus Serv. 
1839. Acridiwm robustum Serville, Hist. Natur. Ins., Orth., 
p. 647, no. 7. 
1870. Heteracris ducalis Walker, Cat. Derm. Salt. B. M., 
Iv, pp. 663, 665. 
1910. H[eteracris| robusta Kirby, Syn. Cat. Orth., ii, 
p. 555, no. 15. 
1914. Heteracris robusta Kirby, Fauna Brit. India, Acrid., 
p. 262, no. 322. 
British Museum specimens : Silhet, 2 22; 1 2 without 
data (Walker's types). 
I am not quite sure that this species actually belongs to 
the genus Choroedocus, since males are unknown. However, 
the females agree perfectly well with the two foregoing 
species as far as generic characters are concerned. 
4, Choroedocus (?) sparsus Serv. 
1839. Acridiwm sparsum Serville, Hist. Nat. Ins., Orth., 
p. 646, no. 6. 
