35 



fly are parasitised by the same Hymenoptera that attack Schoenohius. 

 Calandra oryzae and Sitotroga cerealella were noticed on several 

 occasions. 



Several stem-borers {Diatraca and Child) and an injurious red scale 

 occurred on sugar-cane, and Oryctes rhinoceros, Rhynchophorus and a 

 Psychid that sometimes causes severe injury [R.A.E., A, ix, 509] 

 on coconuts. 



At the end of April 1921 an infestation of cotton bolls with Platycdra 

 (Depressaria) gossypiella, Saund., was observed [cf. R.A.E., A, ix, 

 509]. Sylepta derogata, F., was abundant on cotton plants left in 

 the field ; a Tachinid and two Hymenopterous parasites have been 

 bred from this Pj'ralid. A weevil, Anthonomus sp., abounds in the 

 flowers and attacks the bolls ; an enquiry has been sent to the United 

 States to ascertain if the species concerned is A. grandis. A bug, 

 Dysdercus angidatns, F., and a small moth are also minor pests of 

 cotton. 



Entomological research is very necessary in Cochin-China, the study 

 of rice pests alone requiring many years' work on the part of an 

 expert. 



Lafr.^nce (L.). Insectes nuisibles des Forets. V. Le Scolyte du Pin. 

 {ips pini, Say, Rhynchophora, Fam. Ipidae.) — Nat. Canad., 



Quebec , xlviii, no. 4, October 1921, pp. 73-78. 



The Scolytid, Ips pini, which has long been a pest of pines in 

 America, but which chiefly confined its attacks to dead or dying trees, 

 has gradually changed its habits and now attacks healthy ones, 

 particularly if there are no sickly trees in the vicinity. The life- 

 history and habits of this beetle are described [R.A.E., A, vii, 429]. 

 There are one or two generations in a year ; dry, warm seasons are 

 favourable to its development. Sickly or djdng trees should be cut 

 down in order to keep a pine stand healthy and reduce the numbers 

 of the beetle. 



Roth (F.). Raupen der Kohleule und deren Vertilgung. [The Cater- 

 pillars of the Cabbage Moth and their Destruction.] — Schieeiz. 

 Obst- u. Gartenbauzeitimg, xxii, 1920, p. 313. (Abstract in Wiener 

 landivirtsch. Ztg., 1921, no. 84-85.) 



Measures against the larvae of the cabbage moth [Barathra brassicae] 

 include digging them out 'of the ground within a radius of 4-6 in. of 

 the infested plants, the interplanting of lettuce as a trap-crop, covering 

 the stems of valuable seedlings with paper, and strewing Paris green 

 mixed with ten times its bulk of bran and a little molasses. 



CoNZEN (M.). Versuche zur Bekampfung schadlicher Erdflohkafer mit 

 Uraniagriin. • [Experiments with Urania Green against Injurious 

 Flea-beetles.] — Deutsche Gartenbauzeitung, xxii, 1920, p. 70. 

 (Abstract in Wiener landwirtsch. Ztg., 1921, no. 84-85.) 



Repeated applications of a spray of Urania green mixed with lime 

 and an adhesive proved excellent against flea-beetles infesting cabbage 

 and rape. The spray must be kept well stirred. 



(5155) c2 



