434 



SiLVBSTBi (F.). Contribuzione alia conoscenza del genere Slictmoccus, 

 Gockerell (Hemiptera: Coccidae). [A contribution to the 

 knowledge of the genus Stictococcus.^-^^. 379-388, 9 figs. 



The author describes all the forms of StictococrMS diversiseta, sp. n., 

 which he found in the Gold Coast on branches and fruit of Anona 

 and on an undetermined plant in Dahomey. Females yielded the 

 parasites Aelhognatus afer, Silv., and Tetrastichus stictococci, Silv. The 

 author approves of Lindinger's erection of this genus as the repre- 

 sentative of a new subfamily, Stictococcinae, as more exact than 

 placing it among the Lecaniinae, as suggested by Gockerell, or among 

 the Margarouinae, as done provisionally by Newstead. 



Mantero (G.). Experimento sulla nascita in Liguria degli adult! (da 

 pupe ibernanti) del Dacus oleae. [An experiment on the emergence 

 in Liguria of the adults (from hibernating pupae) of Dacus oleae.] 

 —p. 389. 



About fifty fallen olives infested by Dacvs oleae were collected on 

 the 28th December 1913 and placed in a jar containing earth. Early 

 in January 1914, 22 pupae were found, which were kept in sterilised 

 earth in a glass tube. The tube was stored in an un warmed room, the 

 earth being wetted from time to time. The first adult appeared on 

 the 23rd March and the last on the 4th April. These observations, 

 made in Liguria, agree with those of Silvestri and Martelli in South 

 Italy. 



Lekfmans (S.). De Theezaadvlieg. [The Tea.-Beed'Fly .]—Mededeel- 

 lingen v. h. Laboratorium v. Plantenziekten no. 12. Mededeelingen 

 van het Proefstation voor Thee, no. xxxv, March 1915, 15 pp. 

 2 plates, [sine loco.] 



Damage to tea-seed has, on investigation, proved to be due to a 

 Trypetid fly, which, according to Professor de Meijere, is Adrama 

 determinata, Walk. The habits of the fly were studied on a tea-estate 

 at an elevation of 3,600 feet in West Java. They were observed to be 

 attracted by tea-seeds, which, after being tested by the water method, 

 were dried in a shady place, before being packed and exported. Flies 

 were put in a cage with : (1) Unripe, green tea-fruits ; (2) not yet 

 germinated and therefore not yet opened seeds ; and (3) germinated 

 seeds. After a week maggots were found in the germinated seeds ; 

 the green tea-fruits and not yet germinated seeds were free from 

 infestation. Some pairs of the flies were then put into cages with 

 germinated seeds of which the lobes were already visible. Soon 

 afterwards oviposition was observed. The egg is inserted into one of 

 the lobes of the seed by means of the ovipositor. The maggots tunnel 

 through the seeds in all directions, and within 9-12 days are full-grown 

 and at that time measure 7-8| mm. They then leave the seeds and 

 pupate in the soil. The length of the whole hfe-cycle is 26 or 27 days. 

 In seeds not yet opened by germination no larvae were found, and the 

 female flies are apparently unable to penetrate the hard shell. The 

 fl es never tried to penetrate into the soil, and seeds covered with a 

 layer of soil of 1 inch and even | inch, were not infested. Planters, 



