AMBLYPODIA GROUP OP THE LYCLENIOE. 39 



outer margin, this margin is decidedly less broad than usual. Underside just like the 

 male except that the ground-colour is paler, so that the markings stand out in greater 

 contrast. 



I have before me three males and one female of this insect from Mr. Druce's 

 collection, and I have recently received other specimens from the same locality: it 

 will come before centauries Fabricius, but may easily be separated from that species by 

 the difference in the blue and by the remarkable transverse bands in both wings on the 

 underside ; the general pattern and appearance are also different, and there should be 

 no difficulty in recognising the species. 



Arhopala centaurus (Fabricius). (Plate IV. figs. 10 & 10 a.) 



Papilio centaurus Fabricius, Syst. Ent. p. 520. n. 329 (1775) ; id. Sp. Ins. vol. ii. p. 117. n. 523 



(1781) ; id. Mant. Ins. vol. ii. p. 68. n. 646 (1787). 

 Hesperia centaurus Fabricius, Ent. Syst. vol. iii. pt. 1, p. 275. n. 63 (1793). 

 Polyommatus helus Godart, Enc. Meth. vol. ix. p. 65:2. n. 119 (1823). 

 Polyommatus centaurus Godart, Enc. Meth. vol. ix. p. 658. n. 138 (1823). 

 Amblypodia centaurus Horsfield, Cat. Lep. Mus. E.I.C. p. 102. n. 33 (1829) ; Hewitson, Cat. 



Lycsenida; B.M. p. 3. n. 15, pi. ii. figs. 10, 13 S (? figs. 12 <$ , 11 ?) (1862) ; Moore, Proc. 



Zool. Soc. Lond. 1865, p. 775; Butler, Cat. Fab. Lep. B.M. p. 179. n. 1 (1869); 



Druce, Proc. Zool. Soc. Loud. 1874; p. 107 ; Butler, Trans. Linn. Soc. Lond., ser. 2, Zool. 



vol. i. p. 548. n. 1 (1877). 

 Amblypodia pstudo-centaurus Doubleday, List Lep. B.M. vol. ii. p. 24 (1847). 

 Narathura centaurus Distant, Rhop. Malay, p. 261. n. 1, pi. xxi. figs. 4 <$ , 5 ? (1885). 

 Nilasera centaurus Moore, Journ. Linn. Soc. Loud., Zoology, vol. xxi. p. 44 (1886). 

 Arhopala centaurus, var. coruscans Wood-Mason and de Niceville, Journ. A. S. B. vol. xlix. pt. 2, 



p. 234. n. 54 (1880). 

 Amblypodia nakula Felder, Wien. ent. Monatsch. vol. iv. p. 395. n. 4 (1860) ; Druce, Proc. Zool. 



Soc. Lond. 1873, p. 353; Kheil, Rhop. Nias, p. 33. n. 121 (1884). 

 Arhopala nakula Felder, Reise Novara, Lep. vol. ii. p. 222. n. 224, pi. xxix. fig. 14 (1865) ; 



Moore, Proc. Zool. Soc. Lond. 1877, p. 590, et 1878, p. 835; Wood-Mason and de Niceville, 



Journ. A. S. B. vol. 1. pt. 2, p. 251. n. 77 (1881). 

 Nilasera pirama Moore, Lep. Cey. vol. i. p. 116, pi. xliii. figs. 3, 3 6 cf, 3a $,3c larvse and pupa 



(1881). 

 Nilasera pirithous Moore, Proc. Zool. Soc. Lond. 1883, p. 531. 

 Arhopala centaurus de Niceville, Butt. Ind. vol. iii. p. 234. n. 786 (1890). 

 Narathura centaurus Fab., Hagen, Berl. ent. Zeit. xxviii. p. 152 (1892). 

 Arhopala centaurus Druce, Proc. Zool. Soc. Lond. 1895, p. 588, et 1896, p. 671. 

 Arhopala centaurus Fabricius, de Niceville and Martin, J. A. S. B. vol. lxiv. pt. ii. p. 464 (1895). 



Hab. India, E. Himalayas ; Assam ; Bhutan ; Burma ; Malay Peninsula ; Siam ; South 

 India; Ceylon; Andaman Isles; Sumatra; Java; Borneo; Sumba and Sumbawa. 

 Expanse, cf & ? , 58-04 mm. 

 This species and its various forms are now so well known that I will only make 



