210 DR. JAMES J. SIMPSON. 



At the Larabanga Bush Camps and at Larabanga itself, between the 15th and 21st 

 August, enormous numbers of pupae and empty pupal cases of G. submorsitans were 

 found and from them the following parasites were bred out. These are given in their 

 order of frequency : — Chalcis amenocles, Walk. ; Dirhinus inflezus, a new species 

 which is being described by Mr. J. Waterston ; a Braconid which is being described 

 by Mr. E. E. Turner as Coelalysia glossinophaga ; a species of Odontomyia, not yet 

 identified* ; and a small Chalcid, which Mr. Waterston has not at present worked 

 out. 



In order to ascertain whether these species attacked only Glossina pupae, I placed 

 the newly emerged parasites in bottles with larvae and pupae of several Diptera and 

 also newly deposited larvae of Glossina. The result was rather astonishing, as very 

 few of the Glossina pupae were attacked, whereas nearly every pupa of two species 

 of Sarcophaga was parasitised. By this means I bred out several hundreds of 

 Chalcis amenocles, and also large numbers of the other species. It is worthy of note 

 that of a large number of pupae of Sarcophaga bred out, hardly a single specimen 

 was parasitised in nature. This is not so surprising as might at first sight appear, as 

 the localities in which these pupae are found are in the rubbish heaps and latrines 

 around villages where tsetse are not common. 



As species of Sarcophaga are everywhere abundant around villages, and as they 

 breed prolifically, it would be possible in a very short time to obtain very large 

 numbers of these parasites for dissemination. 



X. Fauna of the Northern Territories. 



The relationship between the parasites of game and domestic animals, as well as 

 man, is a subject which has been attracting considerable attention in recent years. 

 Although in West Africa much work has been done in this direction, practically 

 nothing has been accomplished on the West Coast. Consequently, when the grass 

 was burnt down and shooting became practicable, I spent a considerable time in the 

 game area to find out what kinds of game harboured parasites, and what were the 

 species of these parasites. By visiting the game area I was also able to compare 

 the association between tsetse and game. A systematic examination of the blood of 

 horses and cattle was also made for comparison. 



The vertebrate fauna of the Northern Territories examined by me included : — 

 5 hyaenas (Hyaena crocuta), civet, Paradoxa sp. , porcupine, elephant, 1 hippopotamus, 

 buffalo (Syncerus nanus), 4 haartebeste (Bubalis major), 4 roan antelope (Hippotragus 

 equinus), 4 waterbuck, 3 kob (Kobus hob), 1 reed buck (Redunca redunca), 1 bush- 

 buck or harnessed antelope (Tragelaphus scriptus), 2 grey duiker (Cephalophus scrip- 

 tus), 5 red-flanked duiker (Cephalophus rufilatus), 5 oribi (Ourebia nigricaudata), 

 1 red-fronted gazelle (Gazella rufifrons), 6 warthog (Phacochaerus aethiopicus), dog- 

 faced baboon (Papio sphinx), red monkey (Cercopithecus patas), brown rat, several 



[*Only a single specimen of this Stratiomyi'd fly was sent home by Dr. Simpson, and 

 without any details as to how it was bred. Of the few species of Odontomyia whose 

 life-history is known the larvae live in mud or damp earth or among decaying leaves 

 and therefore the statement that Dr. Simpson's species is a parasite of Glossina would 

 appear to need verification. — Ed.] 



