390 On a neiv Subspecies o/Glossiiia palpalis. 



Ilah. Forf Hall, Mt. Kenya district. Alt. 1300 m. 



Type. Adult male. B.M. no. 3. 11. 1. 4. Original num- 

 ber 170. Collected lOtli June, 1903, and presented by 

 S. L. Ilinde, Esq. Two specimens. 



LT. — A new Subspecies of Glossina palpalis, Bob.-Desv., the 

 Disseminator of Sleeping Sickness. By Ernest E. 

 Austen. 



The British Museum lias just received from Dr. F. Creigliton 

 Wellman, of Benguella, W. Africa, some specimens of a 

 tsetse- fly which, tiiough obviously belonging to Glossina 

 paljxiUs, Eob.-Desv., are sufficiently distinct from the typical 

 form to be regarded as representing a new subspecies, which 

 may be termed Glossina jyalpolis Wellmani, subsp. n. 



The new subspecies may be characterized shortly as follows, 

 by indicating the points in which it differs from the typical 

 form : — 



Glossina palpalis Wellmani^ subsp. n. 



^ ? . — Frontal stripe pale ochraceous ; thoracic markings 

 much reduced, so that the thorax in a lo ell -preserved specimen 

 opjyears spotted, the antero-lateral markings taking the form 

 of spots or blotches ; the sjwt immediately behind the inner 

 extremity of the humeral callus on each side small, ovoid, or 

 nearly circular, and especially conspicuous when the insect 

 is viewed from above and slightly from behind; femora pale, 

 the dark blotches much reduced. 



Katumbela River, Angola, W. Africa; November 190'1 

 {Br.F. C. Wellman). Six specimens (1 cj , 5 ? ? ). Types 

 in British Museum. 



Writing from Benguella, under date Feb. 5, 1905, 

 Dr. Wellman says : — " I took about eighty specimens of 

 these tsetse-flies in four days along the banks of the Katum- 

 bela Eiver, two days from the coast, in the height of the 

 rainy season." 



The above specimens are of especial interest as being the 

 first recorded examples of any form of GL palpalis from 

 Portuguese West Alrica and as showing that the range of the 

 species in question, which has recently been stated by 

 Laveran * to occur at Sengaleam (about thirty miles from 



* ' Comptes Reiulus/ t. cxxxix. (stance du 31 Octobre, 1904) p. C59. 



