488 



of the adults of pollen-eating beetles, and to ascertain to what 

 degree the enumeration of food-plants would be of real scientific value. 

 This matter is of interest both as regards pollination and apphed 

 entomology. 



The final result of these investigations on the pollen-eating Melige- 

 THiNAE has not the simphcity obtaining in the case of the leaf-eating 

 Halticinae, and it is necessary to consider pre-imaginal development, 

 as the Meligethine larvae have a more marked dependence on certain 

 plants than the adults. 



The results are given in two tables, one arranged according to the 

 species of beetles, and the other according to the plants. 



The character of the Meligethinae as poUen-eating insects postu- 

 lates that the hibernated adults are seldom able in early spring to find 

 food on the plants that have served, and will again serve, the larvae. 

 The adult is compelled to resort to other plants, and this polyphagy 

 has somewhat reduced the strictness of its food-preference. This 

 compulsion does not exist in the case of the larva, as mating and 

 oviposition occur at a time when blossoms are present ; the larva may 

 be ohgophagous or even monophagous. 



It is therefore clear that whereas in the case of the Halticinae the 

 recording of a definitely observed food-plant of the adult is valuable, 

 such a record is usually undesirable for Meligethinae. It is a record 

 of the observed food-plants of the larvae of the latter that merits 

 attention,' and then only if a marked regularity in attack is unmis- 

 takably shown. 



Mdigethes aeneus, M. viridescens, M. coracinus and M. lepidii were 

 all bred from larvae from Crucifers, but in aU the author's experiments 

 the adults confined themselves to shtting open the anthers and eating 

 the pollen therein, the female organs never being touched. 



De Stefani (T.). Informazioni sull' Icerya purchasi, Mask., agli 

 Agrumicoltori della Provincia di Trapani. [Information on 

 Icerya purchasi for the Citrus Growers of the Province of Trapani.] 

 — II Rinnovamento Econ.-Agrar., Trapani, xiv, no. 7, July 1920, 

 pp. 97-102, 3 figs. [Eeceived 14th September 1920.] 



This popular article was prepared as a result of the appearance of 

 the scale, Icerya purchasi, Mask. , on Citrus in the Province of Trapani, 

 Sicily. The usual remedial measures are mentioned for use as auxiUaries 

 to natural control by the CoccineUid, Novius cardinalis. 



MoEEiRA (C). Praga da Mangueira. [A Mango Pest.] — Chacaras e 

 Quintaes, S. Paulo, xxii, no. 2, 15th August 1920, p. 123. 



Against the Homopteron, Aethalion reticulatum, L., infesting mangos, 

 spraying with either nicotine or kerosene-soap is advised. 



Santschi (F.). Cinq nouvelles Notes sur les Fourmis. — Bidl. Soc. 

 Vaud. Sci. Nat., Lausanne, hii, no. 198, 15th September 1920, 

 pp. 163-186, 18 figs. 



The new ants here described include Plagiolepis foreli, found on 

 orchids in the Botanical Gardens at Zurich. 



