182 



Maskew (F.). Quarantine Bmsion.— 3Ithly. Bull. Cal. State Cotnmiss. 

 Hortic, Sacramento, vi, no. 1, January 1917, pp. 36-38. 



The following pests were intercepted during November 1916 : — 

 From Belgium : Larvae of a leaf-miner, Thrips sp., and Aleurodes sp.. 

 on azaleas ; Trioza alacris, Aspidiotus britannicus, A. hederae, and 

 Coccus hesperidum on bay trees. From Central America : Selenas- 

 pidus articulutus and Aspidiotus sp. on bananas, and weevil larvae in 

 avocado seeds. From China : Chdosporium citri and Parlatoria 

 ziziphus on oranges, Cylas formicarius in sweet potatoes, and Calandra 

 oryzae in rice. From Colombia : Diaspis boisdiivaUi on orchids. 

 From Costa Rica : Lepidosaphes beckii on oranges. From Hawaii : 

 Diaspis brotneliae and Pseudococcus sp. on pine-apples ; Coccus longulus 

 on betel leaves ; Chrysomphalus aonidum, Hemichionaspis minor and 

 Pseudococcus sp. on bananas ; Trypetid larvae in string beans ; 

 Cryptorrhynchus batatae in sweet potatoes ; Lepidopterous larvae in 

 dates ; Lepidosaphes beckii on oranges. From Holland : Larvae and 

 pupae of Merodon equestris in narcissus bulbs, and Lepidosaphes ulmi 

 on Buxus. From Japan : Weevil larvae in chestnuts, a Coccid on 

 oranges, Lepidopterous larvae in Chili peppers, and pine-cone and 

 unidentified weevils on chestnuts. From New Jersey : Isosoma 

 orchidearum on orchids. From Pennsylvania : Pseudococcus sp. on 

 gardenia, begonias, coleus, cyclamens, fuchsias and spiraea, and 

 Dialeurodes citri on Citrus sp. From Florida : Chionaspis sp. on 

 pineapple, and Saissetia oleae on avocado. From Maryland : Aspi- 

 diotus perniciosus and Cydia pomonella on apples. From Mexico : 

 Lepidopterous larvae in dates, Lepidosaphes gloveri on limes and 

 oranges, and X. beckii on oranges. From Mississippi : Aleurodes citri 

 on gardenia. From New York : Diaspis boisduvali and Eucalymnatus 

 perforatus on orchids, Aspidiotus perniciosus on apples, Pseudococcus 

 citri on Otaheite orange, and A. lataniae on Jasminum primidinum. 

 From Washington : Rhizoctonia on potatoes. 



Yeitch (R.). The Sugar-cane Wireworm in Fiji [Simodactylus cinna- 

 moneus, Boisd.) — Colonial Sugar-Refining Co., Agric. Rept. no. 1, 

 Sydney, December 1916, 16 pp., 1 plate. [Received 2nd March 

 1917.] 



Of the wireworms in the cane-fields in Fiji, 99 per cent, are the 

 Elaterid, Simodactylus cinnamoneus. Lacon stricticollis, Fairm., also 

 occurs, but much less abundantly, while a third, unidentified species 

 is regarded as a beneficial insect because it destroys large numbers of 

 the white grubs of Rhopea vestita, Arr. The female of S. cinnamoneus 

 deposits eggs in clusters of 20 or 30 in cavities made in lumps of slightly 

 moist earth. The larva hatches out in 15 to 19 days, according to the 

 temperature, and occurs in this stage for two or probably three years, 

 feeding on the eyes, roots and butts of the canes, frequently tunnelling 

 up the centre of the young shoots and killing them. It also attacks 

 roots of grasses, weeds and maize, being especially prevalent in rich, 

 alluvial soils. When full-grown and after many successive moults, 

 the larva pupates in the soil, and in about 10 days the adult emerges. 

 The insect in the larval stage, which is the only dangerous period, is 

 very difficult to control ; it appears to be free from parasites and 

 predaceous enemies, and is capable of enduring prolonged fasts. As a 



