ENTOMOLOGY 211 



of the mildew type. It has the unusual habit of being fungi- 

 vorous, and efforts to induce it to partake of a carnivorous diet 

 proved unsuccessful. J. H. Gage {Illinois Biol. Monog., vi, 

 No. 4, 1-62) has investigated the life-histories of a number of 

 species and (Mrs.) O. A. M. Hawkes {Proc. Zool. Soc, December 

 1920) has published the results of observations in the biology 

 and colour inheritance of the very common English lady-bird, 

 Adalia bipunctata. In the Annals of Applied Biology, December 

 1920, are two biological studies of Coleoptera. (Miss) D. J. 

 Jackson has a contribution dealing with the structure and 

 bionomics of weevils of the genus Sitones, which are injurious 

 to leguminous crops in Britain, and W. Ritchie has a very 

 similar type of paper on the Longicorn Saperda carcharias. 

 Both papers are admirably illustrated, and are records of a 

 great deal of careful observation. Leng's recently published 

 " Catalogue of the Coleoptera of America North of Mexico " 

 {New York, 470 pp.) lists 18,547 species, and over 800 fossil 

 forms are included. The order is divided into the two sub- 

 orders Adephaga and Polyphaga comprising 22 super-families 

 and 109 families. The Catalogus Coleopterorum (Junk and 

 Schenkling) has made further progress, parts 71 and 72 having 

 recently appeared. Part 71 includes the Dytiscidae, Haliplidae, 

 Hygrobiidae, and Amphizoidae, which are comprised in 326 

 pages. Part 72 deals with the subfamily Cetoninse, a list of 

 whose species occupies over 400 pages. 



Orthoptera. — ^The two most important contributions to our 

 knowledge of this order of insects are by P. Cappe de Baillon 

 {La Cellule, xxi, 1-245) and L. Chopard {Insecla, Rennes, 1920). 

 The former writer has an elaborate memoir on the eggs of the 

 Locustidse, while the work of Chopard deals with the morphology 

 and development of the terminal abdominal segments among 

 Orthoptera. The latter paper is important to students of 

 general morphology. 



Applied Entomology. — From among the enormous number of 

 text-books, articles, and bulletins which appear almost weekly 

 and deal with the applied aspects of entomology it is only possi- 

 ble to select a few for special mention. C. F. N. Swynnerton 

 {Bull. Ent. Res., xi, 315-86) contributes an important paper 

 on the Tsetse problem in North Mossurise, Portuguese East 

 Africa. The work in this area is of particular interest, not 

 only on account of the number of species of Glossina which occur, 

 but also from the fact that the district, when under Zulu 

 domination, was the scene of an artificially directed scheme of 

 settlement which resulted in the disappearance of Tsetse flies. 

 The latter result suggests the possibility that properly planned 

 settlement is, in itself, capable of clearing infested areas of the 

 two species here concerned, G. brevipalpis and G. pallidipes. 



