74 LL. LLOYD. 



pairs. The head, seen in front view, has the appearance of a five-petalled rosette. 

 The mandibles are well developed and carry four sharp interdigitating teeth. The 

 antennae and maxillary palpi are short and stumpy and surrounded by oval 

 chitinised ridges. Between and below the palpi is a small depression, which may be 

 the pore of the silk gland. The internal chitinous supports of the mandibles can be 

 seen through the skin and complete the rosette appearance (fig. 1,6). 



■bead 



Fig. 1. Larva of MutilJa glossinae. Turner ; 



A, lateral view, X 10 ; B, front view of head, 



X 60 : (a) palpi, (b) antennae, (c) mandibles, 



(d) internal chitinous supports. 



When full grown the larva spins a very strong papery cocoon, and when this is 

 complete, it is apparently independent of the tsetse puparium, which is indeed 

 occasionally split in the act of spinning or by the drying of the silk. The puparium 

 often shales away from the cocoon in places when collected, but the Mutilla is not 

 affected by this. The cocoon is yellow or pale brown in colour and mottled with 

 dark patches of faecal matter. The pupa, as is usual in Hymenoptera, takes on 

 gradually the colours of the adult. In one case in which the cocoon was slightly 

 opened the larva pupated on 5th August, and the imago emerged on 19th September, 

 giving a pupation period of 45 days. The mature insect bites a round hole in the 

 cocoon and puparium for emergence, usually, but not always, at the anterior end. 

 In one case the insect emerged at the posterior end. 



The adults live well in captivity. As a larger species of Mutilla was once observed 

 eating jam, this article was used as a diet and answered well, both sexes feeding 

 eagerly upon it. A small smear was placed on a piece of cork in the vessel in which 

 the insects were kept. Mating took place freely and repeatedly. The females lived 

 for about three weeks and the males for from ten days to a fortnight. An attempt 

 to breed them was unsuccessful. No tsetse larvae could be obtained, as the breeding 

 of these is impractible while travelling. 



M. glossinae is generally distributed in nwrsitans areas in N. Rhodesia. It has been 

 foimd wherever searches have been made for it, the locaUties being Mwengwa on the 



