ECONOMIC ZOOLOGY — ENTOMOLOGY. 59 



type of inheritance, and tlie essential result of these experiments has been the 

 extension of this pi'inciple to a considerable number of types of a phylogeneti- 

 cally low group of ametabolous insects." 



On two new species of Thysanoptera from the West Indies, C. B. Wil- 

 liams (Jour. Econ. Biol., 8 (1918), No. /f, pp. 209-215, fujs. 2). — Corynothrips 

 steiwpterus and FranldinicUa mclanommatus, taken in large numbers from 

 cassava plants at the agricultural experiment station, at Kingstown, St. Vincent, 

 West Indies, are described as new to science. 



Records and descriptions of British Thysanoptera, C. B. Williams (Jour. 

 Boon. Biol., 8 (1013), No. J,, pp. 216-230, figs. 3).— The author has found the 

 method of coJlecting flowers in paper bags recommended by Uzel to be of con- 

 siderable value since it is possible to obtain material in this way from untrained 

 correspondents in various parts of the country. It is stated that in this way 

 pea thrips (Frankliniella rohusta) were received from 24 counties in England, 

 Wales, and Ireland. 



Eurygaster integriceps and new methods of combating it by means of 

 parasites, I. V. Vasil'ev (Trudy Biuro Ent. [St. Pctersb.], J, (1913), No. 11, pp. 

 81, figs. 31; abs. in Rev. Apph Ent., 1 (1913), Ser. A, No. 11, pp. UG-Ji50).— 

 Next to the Morocco locust this plant bug is the most serious pest of crops. 

 During the last two or three decades it has caused inmiense devastation in 

 Transcaucasia and Transcaspia and is also known in Caucasia. In Transcaspia 

 its principal injury is to winter wheat, the cultivation of which predominates in 

 that country, barley being damaged to only a small degree. A number of im- 

 portant parasitic enemies of this pest are discussed, including 2 tachinids and 5 

 proctotrupids of the genus Telenomus. 



The last part of the work relates to methods of combating the pest by means 

 of its parasite.s, it being pointed out that only the egg parasites have a practical 

 importance in this respect. The experimental transportation of the egg parasite 

 Telenomus vassilievi from central Asia to the government of Kharkof is 

 described. 



The periodical cicada or seveiiteen-year locust, H. A. Gossabd (Ohio Sta. 

 Circ. 142 (1914), PP- 41--'n, fios. 7). — This circular has been prepared with a 

 view to furnishing information on the periodical cicada, which is due to appear 

 over most of eastern Ohio during the summer of 1914. 



A catalogue of the Psyllidae, G. Aulmann (Psyllidarum Catalogus. Berlin, 

 1913, pp. 92). — A synonymic catalogue of the Psyllidse of the world, in which 

 478 speces are listed. 



A note on Oxyrhachys tarundus, N. C. Chatterjee (Indian Forester, 40 

 (1914), No. 2, pp. 75-79, pis. 2). — This membracid is reported as injuring 

 Alhizzia Icbbeck, A. prdcera. Acacia cdtechu, and Phyllanthus ^niblica trees. 

 Attention is called to the fact that the habits of this Oxyrhachys are very 

 similar to those of Ceresa bubalus, described by Mai*latt (E. S. R., 9, p. 675). 



Morphology and biology of the Membracidae of Kansas, Hazel E. Branch 

 (Kans. VJiiv. Sci. Bui., 8 (1913), No. 3, pp. 75-115, pis. 17).— This report of life 

 history and morphological studies of the Membracidse of Kansas includes tables 

 for the separations of the subfamilies, tribes, genera, and species occurring in 

 Kansas. A list of food plants and a bibliography are appended. 



The obliteration of sexual reproduction in Chermes, P. Makchal (IV. 

 Conf. Inteniat. G^netique Paris, Compt. Rend, et Raps., 1911, pp. 488-490). — In 

 an article previously noted (E. S. E.. 19. p. 860) the author has reported the 

 results of his research on the life history of Chermes pint. In the indige- 

 nous race of this species sexual reproduction does not take place. Although 

 large numbers of functionless females are produced, not a single male has been 

 observed. On the other hand, the oriental race of C. pini possesses a normal 



