570 



into sections on beneficial, slightly harmful and distinctly injurious 

 species, the revisers have practically rewritten the contents. The 

 nomenclature has been brought up to date, and the biology of the 

 various species has been made a special feature. Remedial measures 

 are dealt with briefly, only those of known practical value being 

 considered. 



Hegh (E.). Les Termites. Partie generale. Description.— Distri- 

 bution geographique. — Classification. — Biologic. — Vie sociale. — 

 Alimentation. — Construction. — Rapports avec le Monde exterieur. 



• — Brussels, Imprim. Indust & Financiere, 4, Rue de Berlairnont, 

 1922, 756 pp., 460 figs., 1 map. 

 Many of the sections of this excellent compilation of the information 

 at present known regarding termites and their habits in various parts 

 of the world have previously been noticed [R.A.E., A, ix, 521 ; x, 184, 

 284, 425]. The last one included in this work deals with the relations 

 between one termite colony and another, and with predacious enemies, 

 parasites, other insects hving with the colony, the vegetation covering 

 the termitaria and the inter-action of geological conditions and the 

 occurrence of termites. The influence of such external factors as 

 light, heat and humidity on the insects is discussed. An extensive 

 bibliography is given. 



Wolff (M.) & Krausse (A.). Die forstliehen Lepidopteren. [Forest 

 Lepidoptera.] — Jena, Gustav Fischer, 1922, viii + 337 pp. 

 Price 8 marks ; bound, 11 marks. 



This volume serves the double purpose of a work of reference and 

 of a text-book. As the former it should assist the professional 

 entomologist, advanced forester, student, and all interested in 

 entomology. As a text-book the monographic descriptions of the 

 biology of the important forest pests are designed to help beginners, 

 especially students. The species dealt with include all those mentioned 

 since the pubhcation, in 1837, of Ratzeburg's " Forest Insects." 



The first section deals with classification, morphology, development 

 and physiology. There is a list of authors on forest Lepidoptera and 

 their parasites, a bibliography, and a chapter on biological formulae. 



The second part contains a systematic biological review of all 

 Central European forest Lepidoptera and the life-histories of the more 

 important species, with information regarding their food-plants, control 

 and natural enemies. The pests are arranged in a series of tables under 

 their food-plants, with subdivisions according to the parts attacked. 



A botanical supplement includes a classified list of the important 

 forest plants. 



Such works on general zoology, entomology, and forest-protection 

 as provide a useful help to the student are included in a bibhography, 

 and the volume seems well adapted to the purpose for which it has been 

 planned. 



HorvAth (G.). Ueber eine dem Tabak schadliche Hemipteren-Art 



aus Sumatra. [A Species of Rhvnchota from Sumatra injurious to 



Tobacco.]— Konowia, Vienna, i, pt. 4-5, 1922, pp. 173-176, 1 fig. 



The Capsid previously recorded as GaUohelicus nicotianae, Konings- 



berger [R.A.E., A, vii, 251, 538] is now referred to the genus Dicyphus, 



Fieb. A redescription of it is given in Latin, and it is compared with 



D. orienialis, Popp., and D. minimus, Uhl. 



