MIGRATION AND DISPERSAL OF INSECTS. 39 



only took four specimens. I never saw it again. Visiting the sum- 

 mit a few days after, when a cahner air gave me hopes of really 

 making a bag, not a specimen could be seen. From this top one sees 

 another parallel ridge close to, and perhaps a couple of hundred feet 

 higher, and then a large gap in either direction to the Sierra de Gata 

 in the west, with its conical summits, and the Sierra de Gredos east- 

 wards, with higher rocky peaks and much snow. 



The Sierra de Bejar thus yielded several interesting species, and 

 was, 1 fancy, much more productive in coleoptera. Our method of 

 working it, however, amounted to little more than a rush to the top 

 and a rush back again. Camping out, or some means of spending a 

 longer time near the top, would have given us much more satisfactory 

 results. When I investigated Heteroiij/nis paradoxa var. candelariai' I, 

 of course, spent the day in its habitats, and went no higher, and 1 saw 

 then more Erehia Kti/ipw than when merely rushing up and down. The 

 form of E. ^tmine flying on the Sierra de Bejar, at about 5000 feet to 

 6000 feet, over stony ground much covered by Cijthus. purnaux, was 

 very large, nearly half as large again as the common Swiss form, and 

 with the colours very bright and the ocelli well-developed, the undei'- 

 side being in the males very dark and black. As K. sti/nnr has not 

 been previously recorded from Spain, and as this very large form is 

 previously unrecorded, I propose to call this variety bcjairiisis. 



(To be rontiniu'd.) 



The Migration and Dispersal of Insects. 



By E. J. B. SOPP, i'MI.Met.Soe., F.E.S. 

 We are sometimes told that, notwithstanding the vast amount of 

 time and trouble expended on their production, the works of eminent 

 entomologists appeal, after all, to but a section of the minority of the 

 students of animal life. No such failing, however, can be laid to the 

 charge of the latest of Mr. Tutt's many and varied contributions to 

 entomological literature. The Mijiration and Dispersal of Insects " 

 needs neither introduction nor commendation to the readers of this 

 journal ; nevertheless we should feel grateful to Mr. Tutt for having 

 brought together and published in a convenient and accessible form 

 the excellent series of instructive papers which have, at intervals, so 

 long contributed to the increasing value amongst scientific monthlies 

 oi the Knto)/iolu<iist's lleconL It is to be sincerely hoped that this 

 little monograph, bristling with its facts of absorbing interest to all 

 true naturalists, culled from various sources, and marshalled and re- 

 viewed by an entomologist of such acknowledged acumen as the 

 author, will quickly find a place in the library of every student of 

 nature. For the attractiveness of the subject presented to us should 

 procure for it a large circle of readers beyond the specialists in the 

 various orders — ^all of whom are catered for — students amongst the 

 large and ever-increasing cloud of " irregular skirmishers " with which 

 the main body of entomologists is being rapidly surrounded, who, 

 although insufficiently equipped to be able to wax enthusiastic over 

 subtleties in classification, varietal distinctions, and other technical 



• The Mifiration ami Dispersal of Insects, by J. W. Tiitt, F.E.S. Demy 8vo., 

 132 pp. Elliot Stock, 62, Paternoster Bow, E.G. 5s. 



