185 



Anastellorhina augvr, Y. {CaUiphora oceaniae), (smaller yellow 

 house blow-fly), occurs in all kinds of situations ; 14 days intervene 

 between the egg and the appearance of the adult. The larva becomes 

 mature on the 7th day after hatching, then drops from the wool into 

 the soil to pupate. At Yarrawin, no specimens were reared from 

 stained wool until April. From then onwards throughout the winter, 

 this species was common. The larval stage was longer during winter 

 by one or two weeks, and the pupal stage lasted from four to six weeks. 

 Pollenia stygia, F. (Cvillosa), (golden-haired blow-fly), has an extended 

 range over the greater part of Australia. The life-history is similar 

 to that of the previous species. NeocaUiphora ochracea is found in the 

 forest country near Walcha about midsummer. The life-history is 

 unknown. Pgcnosoma {CallipJiora) rufifacies (hairy maggot-fly) 

 was very abundant at Yarrawin, attacking sheep from the end of 

 September to November, although carrion was infested throughout 

 the year. Pycnosoma (C) varipes is common in the western districts 

 of New South Wales and Queensland ; this species breeds in carrion 

 and has been reared from soiled wool. Lvcilia tasmaniensis has a wide 

 range in Australia. Nothing is known of the larval and pupal habits, 

 but this is probably the species which infests sheep at Tanna, in the 

 New Hebrides. Stomoxys calcitrans was present in large numbers 

 at Yarrawin. Ophyra nigra occurs in Australia, the Malay Archipelago 

 and China. The adults feed on and oviposit in both animal and vege- 

 table matter. Living wool is frequently infested by this species. 

 The most important result of the Yarrawin investigations was the 

 discovery of the Chalcid, Nasonia brevicornis, parasitic on blow-flies, 

 and colonies of it have been liberated in infested localities. Other 

 enemies of blow-flies are the ant, Iridomyrmex delectus, nocturnal 

 spiders, carnivorous beetles, especially the Staphylinid, Creophilus 

 erytlirocejjJialns, a wasp, Gorytes sp., besides birds, including crows, 

 magpies and starlings. In addition to the testing of washing and 

 dipping fluids and the use of poisoned baits, a biological survey of the 

 Brewarrina district was made. Attempts to find flies sheltering in 

 hollow trees, rabbit burrows, etc., at any period of the year, were 

 unsuccessful. 



Ueich (F. W.). a Preliminary List of the Mosquitos of British Guiana. 

 ^Jl. Bd. Agric. Brit. Guiana-, Georgetown, viii, no. 3, July 1915, 

 pp. 80-85. 



This list contains the names of 40 species of mosquitos found in 

 British Guiana, with the range of distribution given in each case. The 

 list was compiled in 1911 and, as an editorial note points out, there 

 are many additional species now known from that country. 



<t1raham (W. a.). Agricultural Achievements and Problems in North 

 Carolina. — Bull. NorthCarolina Dept. Agric, Raleigh, xxxvi, no. 7, 

 July 1915, 27 pp. 



The work of tick eradication in North Carolina has been carried on 

 successfully. In 1902, the quarantine line was along the crest of the 

 Blue Ridge Mountains. By January 1915, the State had been cleared 

 of the tick [Margaropus annulatus'\ from its western boundary to the 



