ECONOMIC ZOOLOGY. Ill 



Durra leaves damaged by the Durra Aphis (Aphis sorghi, 

 Theob.), with specimens of the insect, and also its Lady-bird 

 enemies, Chilomenes vicina and Coccinella 11-punctata. 



Specimens illustrating the life-history of the Willow Aphis 

 {Lachnus viminalis), with examples of the leaves and wood 

 injured by them. 



Examples of the Cabbage Aphis {Aphis brassicce), which 

 has recently been causing much damage in Essex and Kent. 



Specimens showing the injury caused to rose bushes by 

 scale insects, or the " Scurvy Bark Louse" {Biaspis rosoe) ; 

 also examples of various moths, the caterpillars of which 

 feed on roses. 



Peas attacked by the larvse of a small fly, or " Pea Midge" 

 {Diplosis pisi). 



Wine corks bored by caterpillars of Oinophila v-fiava ; 

 and of the Fig Moth {Ephestia ficella). 



Hide damaged by Ox Warble. 

 The following are some of the subjects of inquiry : — 

 (1.) Specimens of Indian House-fly (Musca determinata) 

 and other flies sent for determination as possibly 

 conveying disease from filth trenches. 



(2.) A biting fly, Stomoxys calcitrans, sent from India for 

 determination as not improbably conveying disease. 



(3.) A small fly, Simulium damnosum, sent for deter- 

 mination from Uganda. Its bite causes great 

 irritation and produces large swellings and sores. 



{4s.) Pangonia zonata and other Horse-flies (Ta^amcZoe;, 

 believed to disseminate a fatal disease among horses 

 in Somaliland. 



(5.) Two kinds of gnat {Theobaldia annulata and 

 Anopheles maculipennis) sent for determination. 

 These were so troublesome in Somersetshire as to 

 make the use of mosquito curtains necessary. 



(6.) Midges (Chironomus riparius) causing great annoy- 

 ance at Wandsworth. Sent for determination, and 

 with inquiry as to their origin, from the Medical 

 Officer of Health. 



(7.) Household mites (Glyciphagus domesticus), infesting 

 furniture, sent for advice. 



(8.) Larvae of a moth, " Bag-worms " {Psychidce) sent for 

 determination from British Central Africa. Sup- 

 posed by the natives to be poisonous to cattle. 



(9.) Growing coff'ee-berries injured by weevils {Scolytidce) 

 in Angola. 



(10.) Fruit-flies (Geratitis capitata) in South Africa and 

 West Australia. 



