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LiCHTENSTEiN (J. L. ) & PiCARD (F.)- Etude Morphologique et Biolo- 

 gique du Sycosoter lavagnei, Picard et J. L. Licht., Hecabolide 

 parasite de V Hypoborus ficus , Ev. [A Morphological and Biological 

 Study of Sycosoter lavagnei, Picard & J. L. Licht., a Hecabolid 

 Parasite of Hypoborus ficus. ] — Bull. Biol. France et Belgique, Paris. 

 li, no. 4, 15th December 1917, pp. 440-474, 33 figs. [Eeceived 

 28th May 1918.] 



The small Scolytid, Hypoborus ficus, Er., which mines irregular 

 galleries in the ianer surface of the bark of fig-trees, is parasitised 

 by a Braconid, Sycosoter laixignei. 



The damage done by H. ficus, though not in itself of great import- 

 ance, can hardly be regarded as neghgible, owing to the fact of this 

 insect producing three, or perhaps more, annual generations. It is 

 however parasitised by two Chalcidids, though to a less extent than 

 by S. lavagnei, and is also destroyed hf an Acarid, Pediculoides ventri- 

 cosus, Newp., and by the Coleopterous larvae of Laemophloeus hypobori, 

 Perris, L. ater, Oliv., and Nemosoma elongatum, L. 



S. lavagnei, exhibits a seasonal dimorphism in both sexes, most 

 closely analogous to that met with in Isosoma tritici, Fitch, and 

 I. grande, Riley, the difference between the two generations in this 

 case being attributed to the difference between the succulent nourish- 

 ment of spring and the drier character of that of summer, though 

 the factor of nourishment in this species can be only a secondary one 

 among several others. 



The adults begin to appear in April and emerge throughout the season 

 till the beginning of November. There are probably three generations, 

 the females of the spring generation being almost always winged, 

 while the autumn ones are wingless. Winged males are always 

 exceptional, even in the spring. After emergence, the adult has 

 never been observed to take food, and pairing in observed cases has 

 always been between apterous individuals, once only between an 

 apterous male and a winged female. The egg is laid externally on 

 any part of the skin of the host-larva, which is attacked at any age. 

 On hatching the larva pierces the skin of the host and gradually sucks 

 it dry, ultimately replacing the host larva in its gallery, where it spins 

 its cocoon, the metamorphosis being completed rapidly. 



Malloch (J. R.). A Partial Key to Species of the Genus Agromyza 

 (Dlptera). — Canadian Entomologist, London, Ont., 1, nos. 3-4, 

 March-April 1918, pp. 76-80 & 130-132. 



The contents of this paper are indicated by its title. The following 

 new North American species are described : Agromyza deceptiva, 

 A. angulicornis, A. assimilis and A. indecora. 



Fisher (W. S.). A New Hopliairom Florida. — Canadian Entomologist, 

 London, Ont., L., no. 4, April 1918, pp. 140-142. 



Hoplia floridana, sp. n. , is described from Florida, where this beetle 

 is reported as feeding on citrus fohage. 



