15 



experimental zoology has been undertaken almost entirely in temperate 

 climates, where biologists often have to wait a whole year for one 

 generation, while in a tropical country it would be possible to study 

 10 or 12 in the same period. 



Crawford (D. L.). Philippine and Asiatic Psyllidae. — Philippine Jl. 

 Science, Manila, xii, Sec. D, no. 3, May 1917, pp. 163-175, 

 1 plate. [Received 8th November 1917.] 



Of the eighteen species of Psyllids described in this paper, thirteen 

 are new, while two new genera are erected. 



Euphalerus citri, Kuw., was collected in southern India on Cordin 

 cordata ; Arytuina (PsyUopa) punctipennis, Crawf., is a pest of indigo 

 in the Orient and is probably identical with PsijUa isiiis, Buckt. : 

 Trioza fietcheri, Cra^vf., has been collected in galls of Trewia sp. ; and 

 T. jambolanae, sp. n., was taken on Eugenia jambolana. 



Ajs^derson (T. J.). Notes on Insects Injurious to Coffee. — Dept. Agric. 

 British East Africa, Nairobi, Agric. Bull. no. 2, 1917, pp. 20-43. 



Swarms of Schistocerca peregrina, 01. (migratory locust) sometimes 

 settle on coffee bushes and break the branches by their weight, while 

 the larvae of Zonocerus variegatus, L. and Z. elegans, Thb., destroy the 

 leaves and flowers of coffee, being controlled by the use of poisoned 

 bait if present in numbers. The first injurious attack by thrips was 

 recorded in 1915 when a new species, Diarlhrothrips cojjeae, Williams, 

 caused severe damage. A spray made by steeping 6 lb. tobacco leaf 

 in 26 gals, water for 24 hours, straining and mixing with. 2 lb. soft soap, 

 was effective, but too expensive for use on a large scale. However an 

 equally effective and cheaper spray composed of 5 lb. common blue 

 soap to 40 gals, water applied twice within 3 or 4 days checked the 

 attacks and almost wholly saved the crop. Lencoptera (Cemiostoma) 

 coffeella, Staint. (coffee leaf-miner) has a wide distribution in the 

 East African Protectorate, but up to the present has been regarded 

 as a minor pest of coffee. Cutworms can be controlled in the usual 

 ways, \'iz., by collecting, and by the use of collars and poisoned baits ; 

 a Limacodid caterpillar [Parasa sp.) is a minor pest that can be con- 

 trolled by hand picking. The Longicorn, Anthores leuconotus, Pasc. 

 (white coffee borer) is a pest of coffee in Zanzibar and elsewhere in 

 Africa, but has only once, in 1912, been reported in the Protectorate 

 on coffee. O^^dng to its attack, the stem may be partly or entirely 

 ring-barked, cutting off the food-supply, and the stem and roots may be 

 tunnelled and weakened. It is best combated by the injection of a 

 drop or two of carbon bisulphide into the holes, which should then 

 be plugged with clay. The borer, Dirphya usambica, Kolbe, and 

 the leaf-eating beetles, Idacantha magna, Weise, Systates irregularis, 

 Faust, and S. cribripennis, Fairm., have also been reported. 



The most important of the RhjTichota attacking coffee is Antestia 

 lineaticollis, Stal, generally treated as a variety of A. variegata, Thb. 

 This bug in all stages pierces the leaves, young stems, berries and stalks 

 of the berries, feeding on the juices, and experiments on its control 

 are still being conducted ; spraying in one district with a mixture of 

 5 lb. arsenate of lead paste and 4 lb. sugar to 50 gals, water gave good 



