848 DR. A. G. BITTLER OS [NoV. 16 , 



69. Alceides trtkosama, Wallgr. 



Estcourt, 6th, 23rd, and 29th September, 1st, 2nd, 3rd, and 

 12rh October; Niginya, Ulundi, 10th, 12th, 13th, 14th, 10th, and 

 17th September ; Frere, 2nd and 10th December, 1896. 



" This appears to be a very variable species, ranging from 

 orange with brown markings to brown with very slight orange 

 markings. I am inclined to consider the orange form as the 

 spring one, and the brown as the late summer and autumn form, 

 as the species does not occur in mid-winter. However, I have 

 hardly worked out the matter sufficiently to speak definitely yet, 

 but I have got several young larvae from eggs laid by an orange 

 female. She deposited them at the roots of gi'a^s, burying them 

 just below the surface, a method of ovipositing which I have 

 never seen in any other species." 



Pez'haps it may assist Mr. Marshall to indicate the times of 

 capture of the t\^-o forms as represented by the twenty-eight 

 examples which he has sent us in the present series and which 

 (being in papers) were not easily examined until set : — 



Orange form. Intermediate. Brown. 



10th Sept.-lOth Dec. 2nd-12th Oct. 29th Sept.-2nd Dec. 

 18 examples. 4 examples. 6 examples. 



The extremes and intermediates were captured on the same 

 days and all in perfect condition ; therefore I think Mr. Marshall 

 will find that they have no seasonal value. 



70. AtffiiDES THTEA, Linn. 



Niginya, Ulundi, 6000 feet, 10th and 15th September, 1896. 



71. Zeeitis amanga, Westw. 



Tugela near Weeneu, 2500 feet, 5th November, 1896. 



72. Zeeitis haepax, Fabr. 



Estcourt, 23rd and 29th September ; 3rd, 4th, 5th, 8th, 12th, 

 14th, 15th, 16th, and 17th October, 1896. 



Chetsoeitis, gen. nov. 



Intermediate in character between Chrysorin'Ma and Cigarifis, 

 having almost the form of the latter, but much more nearly 

 resembling the former in the character of the under-surface 

 markings. 



It differs from all the forms of the Zeritis group and from 

 Chrysophanus in having no apical furca to the subcostal vein of 

 the primaries, this vein therefore being quadi-iramose ; the upper 

 radial also is emitted from the subcostal vein at some distance 

 beyond the end of the cell. 



Type, Zeritis oreas, Trimen. 



