382 



Ehrhorx (E. M.). Division o£ Plant Inspection. — Hawaiian Forester 

 and Agriculturist, Honolulu, xviii, no. 2, February 1921, pp. 39-41. 



The pests intercepted during Januar}' 1921 included scale-insects 

 and Aleurodes sp. on avocado pear from Florida, and fungus gnats 

 [Mycetophilids] in ginger roots from Korea. 



Wakefield (E. M.). Mosaic Disease of Plants.— TlVs/ Indian Bull., 

 Barbados, xviii, no. 4, 11th April 1921, pp. 197-206. 



The work of previous authors dealing with mosaic disease of plants 

 and the methods of controlling the toxin causing it is here reviewed. 



The insects recorded as transmitting the disease to healthy plants 

 are : the beet leafhopper {Euttetix tenella, Baker), causing curly-top 

 of sugar-beet [R.A.E., A, v, 492; vi, 480, etc.] ; Aphids infecting 

 spinach [loc. cit. vi, 453] ; and the corn aphis [Aphis niaidis], which 

 transmits the disease to sugar-cane [loc. cit., viii, 370, 483, etc.]. 



Bodkin (G. E.). Some Insect Pests oS British Guiana.—//. Bd. Agric, 

 Brit. Guiana, Georgetown, xiv, no. 2, April 1921, pp. 132-139. 



In this paper, read to the Imperial Entomological Conference in 

 London, June 1920, the following pests of sugar-cane are dealt 

 with : — Castnia liens, F. (giant moth borer), Diatraea saccharalis, F. 

 (small moth borer), D. canella, Hamps., Metamasius hemipterus (weevil 

 borer), Pelamia (Remigia) re panda and Laphygma frugiperda. 

 Information on their life-history and the remedial measures against 

 the mhas already been noticed [R.A.E., A, ii, 30, 57 ; v, 148, etc.]. 



The chief pest of coconut palms is Brassolis sophorae, L. [loc. cit., 

 iv, 66], and they are also occasionally attacked in certain localities by 

 a large species of locust. 



The invasion of locusts which occurred in 1917 is briefly mentioned 

 [loc. cit., vi, 335]. 



Young rice plants are attacked by the larvae of P. repanda, and the 

 mature plants by D. saccharalis. Citrus, especially limes, suffers from 

 attacks of scale-insects. 



Laing (F.). On Various Genera o£ British Aphides (Homoptera). — 



Ent. Mthly. Mag., London, 3rd Ser., no. 77-78, May-June 1921, 

 pp. 118-127, 4 t^gs. 



The Aphids dealt with are AtJieroides serrulatus, Hal., A. hirtellus, 

 Hal., on Aira caespitosa, Sipha schoutedeni, del Guer., 5. littoralis, Wlk., 

 on grass, Thripsaphis cyperi, Wlk., on rushes, Saltusaphis insessa, Wlk., 

 5. familiar is, Wlk., Aspidaphis adjuvans, Wlk., on Polygonum 

 aviculare and Lycopsis arvensis, Brachycolus frequens, Wlk., Aphis 

 hufo, Wlk., and Rhopalosiphum eriophori, Wlk. 



UvARov (B. p.). On the Native Country of the Common House 

 Cricket {Gryllus domesticus, L.), with a Description of a new 



Variety. — Ent. Mthly. Mag., London, 3rd Ser., no. 78, June 1921, 

 pp. 138-140. 



The deserts of S.W. Asia and X. ^Africa are considered to be the 

 original home of the house-cricket, Gryllus domesticus, L. In Trans- 

 caucasia it has been observed out of doors in the summer and in 

 liouses in the winter. Individuals recently received from a house in 

 Khartoum are described as G. domesticus, L., var. meridionalis, n. 



