lOLAUS. 73 



Other larvae of tliis genus are known, but do not appear to 

 exhibit anything unusual in their habits. 



GENUS lOLAUS. 

 lolaus, Hiibner, Verz. bek. Schmctt. p. 8i ([816); West- 

 wood, Gen. Diurn. I.epid. p. 480 (1852); llewitson, 111. 

 Diurn. Lcpid. p. 40 (1865); Schatz & Kober, Exot. 

 Schmett. ii. p. 269 (1892). 



This is a genus common to Africa and the East Indies, 

 much resembling Z>£'//^^;7.r, but with rather long palpi, and two 

 slender tails on the hind-wings. The males have frequently a 

 tuft of bristles on the inner-margin of the fore-wings beneath, 

 and a corresponding round patch of scales on the upper side 

 of the hind-wings. The prevailing colours above are blue and 

 black ; beneath they are brown or white, more or less banded 

 towards the hind-margins, and with two black spots, often 

 marked with orange, towards the anal angle. 



The type is 



lOLAUS HELIUS. 



Papilio helius, Fabricius, Spec. Ins. ii. p. 112, no. 489 (1781). 

 Polyofumatus helius^ Godart, Enc. Meth. ix. p. 618, no. 3 



(1823). 

 Papilio eurisus^ Cramer, Pap. Exot. iii. pi, 221, fig. D (1779). 

 lolaus eurisHS, Hewitson, Illustr. Diurn. Lepid. Suppl. p. 40, 

 ^ pi. 4, figs. 31, 32 (1869). 



! This Butterfly, which is common in West Africa, measures 

 about an inch and a half across the wings, which are of a bright 

 blue above, with the apex of the fore-wings broadly black. The 

 hind-wings have three slender tails, tipped with white. The 

 under side is ashy-grey, with three brown transverse lines ; the 

 spots at the anal angle stand in rod rings, and the lower eye is 

 bordered behind by a cluster of blue atoms. 



A South African species, /. silas, Westwood, is blue and black 



