40 Timehri. 



shape of a Braconid, which, as a lirva, feeds externally on the larva of 

 the weevil, tor on one occasion upon splitting open a cane containing a 

 weevil-larva I discovered a Braconid larva sucking- it. I did not succeed 

 in rearing the parasite, but the larva secned the same as that of 

 Iphiaulaz medianus, already mentioned as a parasite of Diatrrea 

 caterpillars. 



Mallophora calidus, one of the hawk-flies (Asilidae) is sometimes met 

 with in canetields, having an adult weevil-borer in its grip. I he Asilids 

 are a group of carnivorous flies, with strong bodies, and strong feet 

 furnished with strong claws. They have also a hard sharp beak which 

 they drive into their prey on seizing it. The larger kind& are capable of 

 tackling such stubborn stuff as beetles, cowflies, bees, and wasps. 



Aspid.iotas sacchari is a scale-insect which sometimes forms very 

 thick incrustations on the lowest joints of the cane, and on the stool 

 underground, often including the roots and rootlets. It is parasitized by 

 a minute hymenopteron. 



Wood-ants are sometimes more destructive to cane-stools even than 

 Castnia licus, the giant moth-borer. Kop-kop ants are great enemies of 

 them. If a wood-ant nest be broken to pieces so that the insects have to 

 disperse, kop-kops soon appear, and proceed to march oh 1, each with a 

 wood-ant. When wood-ants are swarming they are liable to be harassed 

 by several foes, among them being our common small social black and 

 yellow wasp, Polybia occidentalism which seizes them and carries them oh"*. 



The principal stool pest is Castnia licus, the large moth -borer, but 

 it does not appear to be serious]} 7 attacked by insect enemies. Mr. Quelch 

 has observed kop-kop ants attacking moths which have just emerged 

 from the chrysalis, and which are then practically helpless, being unable 

 as yet to use their wings in flight. He also found a fairly large carnivor- 

 ous beetle larva which fed on the Castnia caterpillars in the stools. Sub- 

 sequently I also obtained one of these larvae, which I attempted to rear 

 but without success. 



In concluding this article I shall only point out that the planters' 

 insect friends have in turn insect enemies. To give but two instances 

 which have run into my mind. The pupae of Coccinellid beetles which 

 feed on the mealy-bug are sometimes found with little holes, thus proving 

 they have been destroyed by hymenopterous parasites, while a beetle, 

 one of the Rhipiphoridae, is parasitic in the cells of the mud-dauber, 

 Odynerus clavilinatus. 



ADDITIONAL NOTES. 



The above paper was written early in March. Since then I have 

 gathered a good deal of further information on the subject dealt with, and with 

 the kind permission of the Editors of the Journal, embody some of this in the 

 following notes : — 



(1.) tn regard to Caligo t>/><>n>n not only are the pupa? destroyed by 

 parasites but the cs;k s as well, the latter being often attacked by a small 



