ENTOMOLOGY 917 
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Tabanus muluba J. Bequaert 
Tabanus muluba J. Bequaert, 1913, Rev. Zool. Afric., II, 3, p. 462, figs. 7-8 (9; Kalengwe, 
Katanga, Belgian Congo). 
This species is known only from the type. 
Tabanus ditoeniatus Macquart 
Tabanus ditoeniatus Macquart, 1838, ‘Dipt. Exot.,’ I, 1, p. 126 ( ¢, Mauritius, and @, Réunion). 
Tabanus ditaeniatus Austen, 1909, ‘Illustr. African Blood-Suck. Flies,’ p. 118, Pl. XJ, fig. 82 (9). 
H. H. King, 1911, Fourth Rept. Wellcome Res. Labor. Khartoum, vol. B, pp. 117 and 125, 
Pl. IV, figs. 1 and 2; Pl. V, figs. 1-10 ( ¢ o’, larva and pupa). 
cada oor Ricardo, 1900, Ann. Mag. Nat. Hist., (7) VI, p. 165 (9; Pretoria, Trans- 
Vaal). 
I refer to the typical, South African, form of this species, a female from Dela- 
Rey, Western Transvaal (H. Brauns), although it agrees much better with the 
description of Atylotus nigromaculatus Ricardo than with Macquart’s original 
account. It measures 14 mm. in length; the palpi have the usual shape, swollen 
in their basal half and gradually tapering in their apical half; the frons is about 
two and one-half times as long as wide and not appreciably narrower above the 
antennae than at the vertex; the basal frontal callus is partly black and shiny 
in its lower half, and in the middle of the frons there is a minute denuded, shiny, 
black spot on one side (probably in fresh condition the whole frons was uniformly 
covered with gray pruinosity); the eyes (which even under a high magnification 
show no pubescence) have the peculiar pale glaucous, more or less translucent 
color so characteristic of many species of Atylotus, and show, even in a dried 
condition, a narrow, dark cross-line running over three-quarters of the eye from 
a little above the base of the frons; the dorsum of the abdomen bears three sub- 
dued longitudinal stripes of gray tomentum partly covered with whitish pile; 
the legs are pale reddish yellow except for the cinereous coxae and the more 
infuscate fore tarsi and extreme apices of fore tibiae; the fork of the third lon- 
gitudinal vein bears a short appendix. 
To judge from the descriptions, this specimen differs from 7. albipalpus 
Walker, 7. fuscipes Ricardo and T.. diurnus Walker in having entirely reddish 
yellow, and not partly or wholly grayish black, femora. In addition, 7. diurnus 
is described as having the frons about five times as long as wide and the eyes 
without a transverse band; while 7’. albipalpus is said to have slender palpi, 
not appreciably swollen at the base. 
According to S. A. Neave (1915, Bull. Ent. Res., V, 4, p. 319) there can be 
no question but that 7’. ditoeniatus and T’. fuscipes are distinct. The males of 
ditoeniatus are larger and much less hairy insects, with a paler thorax and ab- 
domen; while the females are very much paler on the under side, especially of 
the abdomen. 
Surcouf (1909, ‘Et. Monogr. Taban. Afrique,’ p. 251; and 1921, ‘Gen. 
Insect., Tabanidae,’ p. 66) regards Tabanus fuscinevris Macquart (1838, ‘ Dipt. 
Exot.,’ I, 2, p. 184; ¢; ‘‘probably from the Cape”) as a synonym of T’. ditoeni- 
atus Macquart. Nothing in the description justifies this conclusion, which is 
