Si/noj)sis i>/ the Tsetse- F/it s. 1 o3 



of J abdomen lees Lairy latemlly ; bribtles 

 on Mxth segment in J Btouter and moi-e 



conspicuous viorstfans, Westw. 



7. Dor^nm of thrrax with four ^liarply dftintd 

 small dark brown oval ppot.", anangid in a 



[)aralltlograni, two in front of and two 

 >eliind transvei-se suture ; bulb at base of 



l^roboscis brown at the tip luuf/ifonus, Curti. 



Dorsum of thorax without such spots, though 

 with more or le.-s distinct longiludinal 

 stripes ; bulb at base of proboscis not brown 

 at the tip fusca, WAk. 



In the Monograph aheadj referred to, Glossina tachinoitles, 

 Westwood, was regarded by the writer as a variety ot' 

 GI. palpalis, Rob.-Dcsv.* Within tlie last few day-?, liow- 

 ever, the British Museum has received from Mr. \V. F. 

 Gowers a scries of fifty tsetse-flies from the Benue River, 

 Northern Nigeiia, where tliey were collected by the donor 

 during a journey down the river in a canoe in the latter half 

 of May and beginning of June of the present year. In 

 general a| pearance these sf^ecimens closely resemble small 

 individuals of O'Lmonitans, but may be at once distinguished 

 from this species by their dark hind tarsi. On comparison 

 with the type of 67. tachincide.o, "Westw. f, now in the collec- 

 tion of the Hope Museum, Oxford, not only were Mr. Gowers's 

 specimens found to be specifically identical with it, bat the 

 examination of this fine series showed that 6-7. tachinoidis 

 must be restored to specific rank, as a near ally of Gl. rnorsi- 

 tans, Westw. Except as regards the colour of the hind tarsi, 

 GL tacltinoides, which is the smallest of all the tsetse-flies, is 

 not closely related to Gl. polpalis. The forms previously 

 regarded by the writer as constituting a variety of Gl. palpalisj 

 Rob.-Desv., and designated by him var. tacltinoides, Westw., 

 n)ust now be considered a variety of paljjalis, which may 

 for the present remain unnamed. The Biitish Museum also 

 possesses two other specimens — one from Old Oalabar, May 

 14, 1900 [Dr. Annett), the other from Benin {A. Millson) — 

 A\liich appear to represent a second variety o[' G I. palpal is. 

 ]n the colour of the abdomen, at any rate, this second variety 

 presents a certain approximation to 67. pallicera, Bigot. 



Quite recently 67. tachinoidef, Westw., has been redescribed 

 by Dr. E. Brumpt, of the Laboratoire de Parasitologie, Paris, 

 under the name Glossina Decorsei. An examination of 



• Cf. op. cit. p. 74. 



t This type is a mere frngnient, but fortunately sufficient leiuains for 

 piirpotes ot identification. 



