INSECTA TRANSVAALIENSIA. 93 



make a visage calculated to frighten away any assailant. It is the Puff-Adder among the 

 Bombycine caterpillars, as the larva of Ckcrocampa is among Sphingid larvae." * 



13. Cerura spiritalis. (Tab. IV., tig. 13.) 



Cerura spiritalis, Distant, Ann. Mag. Nat. Hist. (7) vol. iii. p. 464 (1899). 

 Hab. — Transvaal ; Lydenburg District (Krantz). 



14. Cerura swierstrae. (Tab. VIII., fig. 20.) 



Cerura swierstra, Distant, ' Entomologist,' xxxv. p. 213 (1902). 



Hab. — Transvaal; Pretoria (Swierstra), Johannesburg (Cregoe). 



MELEB^AS, gen. nov. 



Palpi short and porrect ; anterior vi^ings in male at least, very long, each wing much 

 longer than the body ; anterior wings with vein 5 given off just below the angle of the cell ; 

 in both wings veins 3 and 4 well separated at their bases, not with an almost common origin 

 at lower apex of cell as in Hoplitis. Type : M. gigas, Dist. 



Only one species at present described. I originally placed it in the genus Hoplitis, from 

 which it differs in venation as above, and also by the great length of the anterior wings 

 in male. 



15. Melebaeas gigas. (Tab. IV., fig. 6.) 



Hoplitis gigas, Distant, Ann. Mag. Nat. Hist. (7) vol. iii. p. 463 (1899). 

 Hab. — Transvaal; Lydenburg District (Krantz). 



Genus CHADISRA. 



Chadisra, Walker, Trans. Entomol. Soc. (iii.) vol. i. p. 81 (1862) ; Hamps. Fauna Brit. India, Moths, vol. i. 

 p. 159 (1892). 



A genus hitherto restricted to British India, but one which — on the authority of 

 Sir Geo. Hampson — also comprises the following species. 



16. Chadisra bicolor. (Tab. IV., fig. 10.) 



Chadisra bicolor, Distant, Ann. Mag. Nat. Hist. (7) vol. iv. p. 360 (1899). 

 Hab. — Transvaal; Pretoria (Coll. Dist.). 



POLIENUS, gen. nov. 



Palpi porrect, hairy ; antenufe obscurely pectinate for about basal half, setaceous ; 

 anterior wings about as long as the body in both sexes, vein 4 from lower angle of cell, 

 vein 6 from middle of cell, vein 6 from just before end of cell, and near 7 which emerges at 

 upper end of cell, both connected with a short oblique vein, 8 bifurcating from 9 a little 

 before apex, the last bifurcating from 10 at about half its length ; posterior wings with veins 

 6 and 7 stalked, bifurcating at a short distance from upper end of cell. 



Apparently allied to the Indian genus Ramcsa. 



* Mem. Nat. Aoatl. Sci. vii. p. 31 (1895). 



