1920] Holland, Lepidoptem of the Congo 211 



to the writer justifiable, Init with long series of specimens before him 

 from all ^arts of tropical west and central Africa, he finds that a regular 

 intergradation in this character occurs, and a regular series running 

 from spotless C. mycerina to much-spotted C. douhledayi can be arranged. 



Palla Hiibner 



(320) 1. Palla vologeses Mabille 

 Palla vologeses Mabille, 1876, Bull. Soc. Zool. France, I, p. 280. 



Charaxes vologeses Aurivillius, 1912, Seitz, Gross-Schmett., XIII, p. 139, PI. 

 xxxnd. 



A solitary male specimen taken at Niangara about the middle of 

 November, 



(321) 2. Palla fulvescens Aurivillius 



Palla fulvescens Aurivillius, 1891, Ent. Tidskr., XII, p. 216. 



Charaxes fulvescens Avnixihuvs, 1912, Seitz, Gross-Schmett., XIII, p. 139, PI. xxxiid. 



There are seventy-four specimens of this species before me, all .of 

 them being males. With the exception of one specimen which is ticketed 

 "Niangara, XI, 20-23, 1910," all were taken at Medje. A few were 

 captured in the month of April, and bear no later- date than the 6th of 

 that month. One is stated to have been taken on June 11. All the rest 

 were taken at dates ranging from July 3 to September 6, 1910. 



From the evidence of the labels it would appear that the species 

 is at least double-brooded, and there may be three broods during the 

 year. 



(322) 3. Palla decius (Cramer) 



Papilio decius Cramer, 1777, Pap. Exot., II, p. 26, PI. cxiv, figs. A, B. 



Palla decius Aurivillius, 1912, Seitz, Gro.ss-Schmett., XIII, p. 141, PI. xxxiic?. 



There are three males before me, two of which were taken at Medje 

 about the middle of July, and one at the same place near the end of 

 August. 



(323) 4. Palla ussheri Butler 



Palla ussheri Butler, 1870, Trans. Ent. Soc. London, p. 124; 1871, Lep. Exot., 

 p. 52, PI. XXI, fig. 3. Aurivillius, 1912, Seitz, Gross-Schmett., XIII, p. 141, 

 PI. xxxiid. 



This species seems to be vastly more common at the places where 

 collections were made than the preceding. There are fifty-seven males. 

 With the exception of one specimen, labelled "Risimu, September 8, 

 1909," all were taken at Medje, a few early in April, the rest from the 

 first week of July to the middle of September. 



