KKl'OKT OK TIIK KNTOWOLOGICAL HECTIOX 



125 



I'lipiil cane (Plate V., fij,'s. 16 LS). — Length, 20 inin. Colour, yeiiowish-ln-owii, thoracic 

 tubercles and abdominal spiracles darker, the former bearing hairs. On the posterior third 

 of the second to the seventh abdominal segments inclusive is a ring of backwardly pointing 

 spines, shortest on the second segment and longest on the seventh. The eighth segment 

 terminates in a coronet of si.K teeth, chestnut-brown in colour, darker at the tips, the 

 lateral pair by far the largest, the dorsal and ventral pairs being equal in size. These 

 teeth are arranged roughly in a circle. Ventrally placed to this coronet are two rows 

 of five comparatively thin spines, of varying lengths, together constituting an interrupted 

 transverse row. Dorso-laterally placed to the coronet are two rows of spines similar to the 

 ventral row. 



The dorsum of the abdomen is sometimes clothed with black pubescence arranged 

 in four longitudinal stripes. On the sixth and seventh segments these stripes merge and 

 on the seventh segment the pubescence is confined to the posterior third. The pubescence 

 is wanting on the dorsum of the eighth segment but is present on the venter of the seventh 

 and a small patch is situated immediately below the coronet on the eighth segment. 



The pupa when first formed is yellowish. Later, as the imago develops, the eyes show 

 as dark with a greenish tinge and the thorax becomes generally darker. 



My thanks are due to Captain W. B. Fry, R.A.M.C., for tending the larvte of Tahanns 

 ditaeniatus and T. himji, while I was away from Khartoum. 



List of Blood-sucking Flies, othek than Mosquitoes, recorded from the 

 anglo-eoyrtian sudan with the localities in which they are known 

 TO occur: — 



Chironomidjs GiilicoidcK sp. (Plate VI., fig. 9). — Khor Arbat. 



Gulicoidi'ii sp. incert. (Plate VI., fig. 10) — Bor (Rev. Shaw). 

 SiMULiD;E Simnlium damnosum, Theob. (Plate VI., fig. 8). — Third Cataract; Selim ; 



Shereik (Capt. F. Burges) ; Abu Hamed ; Khartoum. 

 SiviHliiim griseicoUis, Becker (Plate VI., fig. 7). — Third Cataract to 



Khartoum. 

 Simuliuin sp. incert. — Erkowit. 

 Pyschodid.!; Phlehotomus papatasii, Scop. — Khartoum. 



Phlebotomutf sp. incert. — Khartoum. 

 Tahanid^ Chri/sops brucei, Aus. — Lake No ; Sudd Region ; Shambe ; Bor ; Lado 



District (Captain Mackenzie, D.S.O., R.A.M.C.). 

 Ghrijsops disfinctipennis, Aus. — Lake No ; Bor. 

 Pangonia ruppellu, Jsenn. — Kurora ; Gedaref (K. Cornwallis) ; near 



Gebelein (C. E. Lyall) ; El-Obeid (El-Bimb. Williams) ; Rufaa. 

 Tabanus africanun, Gray. — White Nile from Gebelein southwards. 

 Ttibanii!! latipes, Macq. — White Nile from Gebelein southwards. 

 Tabanux fasciatus, Fabr. sub-sp. niloticus, Aus. — White Nile from Gebelein 



southwards. 

 Tabanus bujiittahis, Wied. — White Nile from Gebelein southwards; Bahr- 



El-Zeraf (L. Landon) ; Kongor ; Gebel Katla, Kordofan (Captain 



Hills, A.S.C.); Talodi (Lieut. N. G. B. Halhed). 

 Tabanus ditgeniatus, Macq. (Plate IV., figs. 1 and 2). — Zeidab ; near Gedaref 



(Captain Knott, A.V.C.) ; Ragabah (Captain Mackenzie, D.S.O.) ; 



White Nile from Gebelein southwards and southern provinces 



generally. 



