180 MESSRS. RILEY AND GODFREY ON 



B. M. Type No. Rh. 145, 2, Me Song forest, Prae, N. Skim, 

 April 1916. 



The male only of this was known to, and described by God- 

 frey (I.e.) from Muak Lek, E. Siam. Some 5 males and 6 females 

 since obtained in the Me Song forest confirm the opinion then form- 

 ed that this is a very distinct race of G. a neon. 



13. Allotinus posidion rekkia, asp. now 

 (Plate VI, tigs 1 and 2.) 



A. horsfieldi continent dis, Godfrey [nsc FruhstorFer], Journ. Nat. 

 Hist. Soc. Siam, ii, p. 135 (1916). 



6. Differs from A. p. atacinus Fruhstorfer (in Seitz Macro- 

 lep. ix, p. 811, 1916) by its blacker tone and by having the sex- 

 mark at the base of vein 4 smaller and even less clearly differentia- 

 ted from the ground-colour. 



2. Hardly separable above in markings from Burmese 

 atacinus, the colouration, however, is paler and more greyish. This 

 applies equally to the underside. 



Length of forewing. — cf, 16 mm; 2, 14.5mm. 



B. M. Type No. Rh. 125, <*, Muak Lek, E. Siam, 7. 1.14. 

 B. M. Type No. Rh. 126, 2, Pak Jong, E. Siam, 4. 1. 15. 

 This species was previously recorded in error by Godfrey (I. c.) 



as A. horsfieldi continental is Fruhstorfer. This latter species, which 

 so far is not known from Siam, is at once separable from rekkia, as 

 in it veins 6 and 7 of forewing arise separately and directly from cell- 

 end, whereas in rekkia they are stalked for some distance. A. posidion 

 Fruhstorfer, closely resembles A. horsfieldi Moore, but throughout 

 its range is consistently smaller. 



14. Allotinus drumila grisea, ssp. nov. 

 (Plate VI, fig. 3.) 



2. Upperside, forewing. — White, basal third grey-brown 

 merging distally into the white ground-colour, extending slightly 

 into area 2, and divided in cell by a conical projection of the Avhite 

 ground-colour directed towords the base. Apex very broadly, inner 

 angle less so, and hind-margin wholly black. Fringes red-brown. 

 Hindwing. — Entirely suffused with grey; costal area black. 



Underside. — As in typical A. drumila Moore. 



JOUltN. NAT. HIST. SOC. SIAM. 



