888 REPORT OF THE HARVARD AFRICAN EXPEDITION 
A careful comparison of the types of N. mayombensis with the description 
of S. ziemanni leaves no doubt that Enderlein redescribed the species which I 
named from the Mayombe. It is one of the very few ‘‘Pangoniae” of the West 
African rain forest, where it is known only from the coastal area of Lower 
Guinea in Cameroon, Spanish Guinea and the Mayombe District of the Belgian 
Congo. 
Nuceria inornata (Austen) 
Diatomineura inornata Austen, 1911, Bull. Ent. Res., I, p. 282 (9; between Bunkeya and Kam- 
bove, Katanga). 
Corizoneura inornata Austen, 1920, Bull. Ent. Res., XI, pp. 140 and 146 ( 9 @). 
Pangonia neavei J. Bequaert, 1913, Rev. Zool. Afric., II, 3, p. 224 (9%). Not Diatomineura 
neaver Austen. 
Pangonia zonata J. Schwetz, 1919, Rev. Zool. Afric., VII, pp. 46-54 and 92-106; 1919, Ann. Trop. 
Med. Paras., XII, pp. 281-288. Not Pangonia zonata Walker. 
This species is common at the proper season (April to June) in many parts 
of Katanga, extending northward as far as Kisengwa and between Kabalo and 
Kongolo. Both sexes visit flowers, but the females also bite and suck blood. 
According to Schwetz’s observations, they frequent the flowers of certain Acan- 
thaceae, especially of Acanthus montanus (Nees). 
Nuceria virgata (Austen) 
Diatomineura virgata Austen, 1911, Bull. Ent. Res., I, p. 277, fig. 2 ( 9%; mid-Lualaba Valley, 
3,000 ft., Katanga). J. Bequaert, 1924, Psyche, XX XI, p. 34. 
Pangonia virgata J. Bequaert, 1913, Rev. Zool. Afric., II, 3, p. 224 ( 9). 
Corizoneura virgata Austen, 1920, Bull. Ent. Res., XI, p. 140. 
This species is known only from the Katanga District of the Belgian Congo. 
Nuceria schwetzi (Austen) 
Corizoneura schwetzi Austen, 1920, Bull. Ent. Res., XI, p. 143 ( 9%; Kakanu, Lomami District, 
Katanga). 
Pangonia oldit J. Schwetz, 1919, Rev. Zool. Afric., VI, pp. 46-54 and 92-106. Not Pangonia 
oldiz Austen. 
This species is known from the Katanga and Tanganyika Territory. It 
flies about the same time as N. tnornata. J. Schwetz found both sexes visiting 
the flowers of the Acanthaceae, Mellera lobulata 8. Moore and Whitfieldia sub- 
viridis Clarke. The females also bite and suck blood. 
Nuceria neavei (Austen) 
Diatomineura neavei Austen, 1911, Bull. Ent. Res., I, p. 279 ( 9 #; Kambove, Katanga). 
Corizoneura neavet Austen, 1920, Bull. Ent. Res., XI, p. 140. 
Pangonia austeni J. Bequaert, 1913, Rev. Zool. Afric., II, 3, p. 225 (in part: @ ;not <7). 
This species is known only from the Katanga District of the Belgian Congo, 
where it is locally common at the beginning of the dry season. The females bite 
and suck blood. 
