320 Prof. Westwood on the supposed abnormal 



upper part of which was pierced hy the escaping insect, 

 which had not, however, been detected. 



The same insect is recorded by Herr Eitsema, in the 

 'Proceedings' of the Entomological Society of the 

 Netherlands ('Tijdschrift voor Entomologie,' 2nd serie, 

 vol. vi., 1871, p. 148), to have been fomid in different 

 parts of Holland, especially near Zandvoort, where it 

 was first found by H. Eitzema's brother in 1867. It 

 had also been observed by HH. Weyenbergh and Snellen 

 van Vollenhoven, and had also been previously recorded 

 in the 'Archives Neerlandaises des Sciences exactes,' 

 vol. v., 1870. By these Dutch entomologists it had been 

 ascertained that the galls in question were made by 

 Eurytoma longipennis* 



Professor G. H. French, of Carbondale, lUinois, 

 described in the ' Prairie Farmer ' for Dec. 31st, 1881, 

 and more fully in the ' Canadian Naturalist ' for Jan., 

 1882, both sexes of a species which he believed to be a 

 new wheat pest, under the title of Isosoma Allynii; the 

 larvae of which were found inside the stalks of growing 

 wheat in Southern Illinois, before the ripening of the 

 grain, and in the straw and stubble during the rest of 

 the summer. They were found mostly in the interior of 

 the 1st and 2nd internodes below the one supporting the 

 head, usually singly, but sometimes more than one in 

 the same internode. They produce no swelling or gall, 

 as do the larvse of /. hordei, but feed upon the soft tissue 

 of the interior of the stalks. They are about 0*15 in. 

 long, rather slender, tapering slightly towards either end, 

 footless, but when in motion seeming to have the power of 

 pushing out the substigmatal portion of the segments, a 

 distinct transverse head about two-thirds of the width of 

 the body, with a pair of brown jaws. Colour yellow, 

 approaching to pale orange. The pup* vary from about 



■■' Mr. Walker has mentioned the discovery of the economy of 

 this species in his 'Notes on Chalcidice,' in which he has given a 

 series of notes on numerous British species of Eurytomides, 

 together with the descriptions of two new genera P7wZ(Xc7j?/r(X, Hal., 

 of which the male is winged and the female apterous, of which the 

 type P. I^is was found in straw roofs near Lucca, Italy. The other 

 genus, Aiolomorplius (type A. rlioplialuides), is from Hong Kong 

 (no museum where it may be seen is mentioned). Mr. Walker 

 also mentions {op. cit., p. 7) that he was indebted to Mr. Saunders, 

 of Ontario, Canada, for specimens of Isosoma vitis, which is men- 

 tioned m the 'Zoologist' as being cradled in grape-stones. 



