599 



Ceroplastes floridensis var. japonic us, n., on the smaller branches 

 of recently imported plants of Japanese maple ; and C. ceriferus, 

 Anders., on stems of Japanese maple. These species were taken at 

 vSt. Albans and were all living ; the last-named was covering a batch 

 of eggs, though whether they could have survived a British winter 



is doubtful. 



Bag N ALL (R. S.). Brief Descriptions of New Thysanoptera.— xii.— 



Ann. & Mag. Nat. Hist., London, viii, no. 46, October 1921 

 pp. 393-400. 



The new species described include : Physothrips minor on 

 Ipomoea staphylina and Physothrips andrewsi on rose from India, and 

 Elaphrothrips ( Idolothrips) antennalis on grass from Japan. 



Ballard (E.). A Preliminary Note on Triphleps tantilus, Motseh. : 

 an Enemy of the Pink BoUworm.— /l^r/c. Jl. India, Calcutta, 

 xvi, no. 5, September 1921, pp. 571-573. 



Ballon, in his account of the pink bollworm [Platyedra gossypiella] 

 in Egypt in 1916-17, records the Anthocorid bug, Triphleps sp. as 

 sucking the eggs. In 1920 an Anthocorid nymph was observed at 

 Coimbatore similarly feeding on the eggs, but it was lost before it could 

 be identified. In 1921 T. tantilus was very abundant and fed readily 

 on both the eggs and freshly emerged larvae of P. gossypiella, the 

 nymphs being apparently more voracious than the adults. In confine- 

 ment the larvae seemed' to be preferred to the eggs. The majority 

 of larvae probably escape in the fields, as they quickly bore into the 

 bolls after hatching, but the eggs are probably destroyed in large 

 numbers, as they are generally laid in places where T. tantilus occurs. 

 This Anthocorid feeds also on the cotton aphis [Aphis gossypii] and 

 the cotton thrips [Heliothrips indicus] and apparently sometimes 

 on cotton leaves. The eggs are laid at the base of the bolls, in the rind 

 of young bolls and in leaf-stalks ; the nymphs are }^ellow to orange, 

 with red eyes. Any enemy of P gossypiella is of importance, and 

 T. tantilus is easily reared. 



Saalas (U.). Ueber die Borkenkafer und den durch sie verursachten 

 Schaden in den Waldem Finnlands. [Bark-beetles and the 

 Injury done by them in Finnish Fprests.]— H els ing for s, 1919, 

 viii + 415 pp., 13 plates, 2 maps. (In Finnish with 'a German 

 Summary.) 



This excellent monograph on the various bark-beetles of Finland 

 gives special attention to their position as forest pests and to success- 

 ful remedial measures. After a review of the development of research 

 on bark-beetles in general, the existing Finnish literature is dealt 

 with. The author's system of investigation consisted in examining 

 all material found on lines crossing in various directions the territory 

 surveyed ; the total length of the lines was 28,000 metres (about 

 18 miles) and their width was two metres. The fifty-two species of 

 bark-beetles met with are dealt with separately. 



The final section treats of the injury caused by bark-beetles and the 

 chief reasons for their occurrence in Finland. A detailed account is 



