156 Bulletin American Museum of Natuml History [Vol. XLIII 



Of this species and its varieties there are twenty-two examples, all 

 of which are males. One specimen was taken at Avakiibi, October 1, 

 1909; one at Lubila, September 20, 1909; all the rest at Medje, one on 

 April 6, the remainder at dates ranging from July 8 to September 27, 

 1910. 



There is considerable variabilitj' in the specimens due to the ob- 

 solescence of the subapical and submarginal spots. In four of the speci- 

 mens belonging to this collection, as well as in numerous other speci- 

 mens taken in Cameroon and which are before me as I write, these spots 

 are wholly obliterated and I propose for this extreme form the varietal 

 name ohliterata. 



(14b) 5a. Hypolimnas bartteloti obliterata, new variety 



Plate VI, Figure 5, cf 



Distinguished from the typical form by the complete obliteration of the sub- 

 apical and submarginal spots on the upper side of both the fore and hind wings. 

 Traces of the uppermost subapical and the lowermost submarginal spot are to be 

 found on the lower side of the fore wing in some specimens, but not in all. In typical 

 H. bartteloti the submarginal white spots form a continuous series, one in each inter- 

 space, though they may vary in size, in some specimens being quite large, in others 

 being reduced to mere points. 



The type of H. bartteloti obliterata is in The American Museum of Natural History; 

 paratypes are in the same collection and in the Holland Collection in the Carnegie 

 Museum. Medje and Cameroon. 



(147) 6. Hypolimnas dubia (Palisot de Beauvois) 



Papilio d}ibius Palisot de Beauvois, 1805, Ins. Rec. en Afrique et Amcrique, 



p. 238, Lep., PI. VI, figs. 2a, 26. 

 Hypolimnas dubia Aurivillitts, 1913, Seitz, Gross-Schmett., XIII, p. 215, PI. XLViiia. 



There are ten males and two females of this species. One male was 

 taken at Bafwabaka, December 9, 1909; two males were captured at 

 Niangara in November 1910; the remaining nine specimens were taken 

 at Medje, the dates pf capture ranging from June 8 to September 27, 

 1910. The two females were taken in the first week in August. 



There is some variation in the maculation of the specimens, 

 particularly in the extent of the large white discal area of the hind wings, 

 which in one specimen is rather broadly suffused with pale ochreous. 

 This variability is characteristic of the species, as shown by numerous 

 specimens coming from various parts of the' continent in the collection 

 of the writer. 



