284 ERNEST E. AUSTEN — NEW AFRICAN 



District, Nortlieru Rhodesia, 1911 {E. A. Cojicinaa) ; 1 Q from Kiliina-Njaro, 

 German East Africa, 1887 (F. J. Jackson, C.B., C.M.G.). lu addition to the 

 foregoing, all of which are in the National Collection, the following three 

 specimens from the Nyasaland Protectorate {S. A. Neave), which are in 

 the possession of the Entomological Research Committee, have also 

 been examined : — 1 Q from the Upper Shire Valley, February, 1910 ; 

 1 Q from Fort Johnston, February, 1910 ; and 1 Q from the south-west shore 

 of Lake Nyasa, March, 1910. 



From TahuHus claiitibialis, Ric, to which, as mcutioiied at the commencement 

 of the diagnosis printed in italics above, the new species is closely allied, 

 7\ /)«//?<//«■ is distinguishable by the abdomen — instead of being (except at the 

 distal extremity) cinnamon-rufous and clothed above exclusively with black 

 hair — being entirely dark, and clothed on the dorsum, at least in part, with 

 minute, appressed, glistening, ochreous hairs. As regards external morplwlogical 

 characters, the only noticeable difference exhibited by T. pnUulus as compared 

 with T. claritihialis is to be found in the greater length of the annulate portion 

 of the third antennal joint. 



Tabanus crocodilinus, sp. n. 



Q. — Length (18 specimens) 9"6 to 12 mm.; width of head o'5 to 4'4 mm. : 

 width of front at vertex 0'6 mm. to just under 1 mm. ; length of wing 8 to 

 9'75 mm. 



Small, compactly built, dusky species, with rather broad head (which, viewed from 

 above, is reyidarly convex in front and noticeably concave behind), a sharply defined 

 and conspicuous, clove-brown frontal callus, which does not send off any kind of 

 prolonyation above, and loith characteristically spotted abdomen. — Dorsum of thorax 

 blackish slate-coloured, clothed ivith short, appressed, tawny-ochraceous hair, mixed 

 with fine, erect, blackish hairs ; dorsum of abdomen clove-broivn, ivith a double 

 series of transversely elliptical-oval or nearly circular, light-grey spots. 



Head : front, from a little way above callus to vertex, mouse-grey, brownish 

 grey, or brownish, clothed with very short, dusky or blackish hair ; front 

 immediately above callus yellowish grey on each side, and clothed with minute 

 ochreous hairs ; sub-callus drab-grey or smoke-grey ; face, jowls, and basiocci- 

 pital region whitish grey and clothed with white hair ; occiput light grey ; front 

 of moderate breadth above, narrower below ; frontal callus normally quadrate, 

 witli its upper angles rovmded-ofF, narrowly separated from eye on each side, in 

 rubbed specimens sometimes somewhat more elongate : pi^ilpi small, pale cream- 

 coloured, clothed on outer side with white hair, mixed in case of terminal joint 

 with minute black hairs, terminal joint viewed from side broad at base and 

 abruptly tapering to a point ; antennae small, first and second joints cream-buff 

 or buff, clothed above with minute black hairs mixed with glistening silvery 

 hairs, third joint entirely ochraceous-rnfous or ochraceous-buff, its expanded 

 portion of moderate breadth, and the angle on its upper margin usually neither 

 sharp nor prominent. Thorax : dorsum not striped, though the beginnings of 

 three narrow grey stripes can sometimes be seen next front margin ; a few 

 whitish hairs on postalar calli, and above base of each wing ; swelling occupying 



