212 [September, 



It may be worth recording- that colonies of Anomala frischii F. occur on 

 the sand-hills at Constantino Bay and Harlyn Bay in the same district. — C. G. 

 Lamb, M.A., B.Sc, Engineering Laboratory, Cambridge. 



[To the above account of the differences between these two species it is 

 only necessary to add that the male characters confirm their distinction. — 

 D, Sharp.] 



Rhi/ssa persuasona L. in the South of Scotland. — In 1910 I received a 

 female of this fine Ichneumon-fly which was captured in Roxburghshire that 

 summer. Early in June of the present year Mr. Lyford Pike showed me a 

 specimen which he had caught the pi'evious day in the valley of the North 

 Esk, Midlothian, where on subsequent days in the same month and part of 

 July I found numbers about dead firs in two different spots. Males were at 

 first much more plentiful than females, but in the end only the latter were 

 seen. The few previous Scottish records seem to be confined to the northern 

 parts of the country. — William Evans, 38 Morniugside Park, Edinburgh : 

 August Sfh, 1917. 



Xiphj/drin dromp(htriu» in the New Forest : a correction. — The Rev. F. D. 

 Morice has examined the Xiphydria recorded by me under this name {ante, 

 p. 172), and he pronounces it to be X. camelus F. The capture of a specimen 

 of the latter iu the New Forest was noted by him in this Magazine in March 

 1901 {<f. Ent. Mo. Mag. xl, pp. 33, 49).— J. J. Walker, Aorangi, Lonsdale 

 Road, Oxford : Avyvst Uth, 1917. 



" The Biology of Dragon-fliks." By R. J. Tillyard, M..\., B.Sc, etc., 

 etc. xii 4- 396 pp. Cambridge Zoological Series. Cambridge University 

 Press. 19] 7. los.net. 



Students of the Odonata can at last place upon their bookslielves a text- 

 book dealing witli the biology of their particular group of insects. It is true 

 that a most useful introduction to the study of the Order was presented by 

 Dr. P. P. Calvert in 1893, but, owing to the way in which it was published, it 

 can only be consulted by those who have access to large libraries. Tlie volume 

 before us is exactly what was wanted — a lucid, well-arranged, and authorita- 

 tive statement of all the most recent information upon every aspect of the 

 subject. Nothing of importance has been omitted, and nothing has been treated 

 of at undue length. It is very far from being a mere record of the labours of 

 otlier workers in the same field of knowledge, for it possesses the great merit 

 of incorporating quite a considerable body of original research, much of which 

 is now made known for the first time. 



One of Mr. Tillyard's special subjects of study during the last year or two 

 has been the venation of the wings of Dragon-flies, as elucidated by the ante- 

 cedent ti-acheation, and, as a result of his enquiries, he has been able to make 

 some important additions to our knowledge of a subject which had been dealt 

 with in so masterly a manner by Prof. J. Q. Needham. The full meaning of 

 the cubito-anal cross-vein which has received the name of " anal crossing' " now 



