432 



THE ZOOLOGIST. 



120. Lachnus. 



Giraud gives two parasites, Allotria forticornis, Gir., and 

 Megasjrilus fuscipes, Nees, as preying respectively upon the 

 Aphids of Pinus jyumilio, and, according to Perris, on those of 

 P. maritimus. These probably belonged to this genus (cf. Ann. 

 Soc. Fr. 1877, pp. 416, 434). 



121. Lachnus pini, Linn. 



Aphidius pini, Hal., has been bred from this species on Abies 

 excelsa by Bignell in Devonshire on Feb. 16th, 1886, the host of 

 which had been captured during the preceding September, and 

 possibly a different one of the same genus on Pinus sylvestris and 

 Abies larix by Haliday (Marsh. Bracon. d'Europ. ii. 567). Mar- 

 shall's unique female of his Aphidius abietis was also bred by 

 Bignell ten days after capturing the host on Abies excelsa in 

 Cann Woods, Devon, on Aug. 6th, 1886 (I. c. 566). A. [Coelo- 

 notus) pictus, Hal., is also recorded from this species by Gaulle 

 (Cat. 86), as is Notanisus versicolor, Walk. (p. 96). Kirchner 

 (Gat. 30) tells us Allotria circumscripta, Htg., has been bred 

 from Aphis pini, Kit. 



122. Lachnus australis, Ashm.* 



Ashmead has described three parasites upon this American 

 species : Lygocerus (Chirocerus) floridanus (Trans. Amer. Ent. 

 Soc. 1881, Proc. p. xxxiv.), Encyrtus lachrti {1. c. 1885, p. xvi.), 

 and Pachycrepis lachni (I. c. 1887, p. 193). 



123. Stomaphis quercus, Linn. 

 In describing his Aphidius wissmannii, Eatzeburg says (Ichn. 

 d. Forst. ii. 59): "Hrn. Wissmann verdanken wir die Ent- 

 deckung des schonen Insectes. Er erzog es in Menge aus Aphis 

 (Lachnus) quercus. Die daneben befindlichen aufgeblahten 

 braungrauen Blattlause haben die Dicke eines Hanfkorns." This 

 was in Hanover. 



124. Schizoneura lanigera, Hausm. 

 The only known parasite of this most injurious species is 

 Aphelinus mali, Halde., as recorded by Howard (Bevis. Aphel. N. 

 Amer. 24). 



