1 28 [ June > 



Islands. The very large number of Biptera have mainly been added 

 by the late Mr. G-. H. Verrall (who has more than once brought 

 forward 100 additional species at a time), and by his nephew, 

 Mr. J. E. Collin, who as one of our Editors continues Mr. Verrall's 

 work ; a very considerable number have also been added by Dr. J. H. 

 Wood, of Tarrington, Herefordshire. 



The form of the Magazine remains practically unchanged from 

 the first, and will be continued in the forthcoming nominal Third 

 Series commencing with the next volume ; and it is, perhaps, needless 

 to state that the spirit of the passage from Laboulbene, happily 

 selected as our motto by our first Editors, has throughout been 

 rigidly adhered to. A word of acknowledgment is due to our printer, 

 Mr. Alexander Napier, for the care and accuracy with which the 

 production of the Magazine has been carried out since he succeeded 

 in 1897 to the business of his late father, whose high standard of 

 printing work has been fully maintained by the son. 



The writers of the Preface to our Second Series were able to 

 congratulate themselves on the existence of an Entomological Journal 

 "conducted on non-commercial principles" for more than twenty-five 

 years. A period of ecpual duration has elapsed since this was written, 

 and their present-day representatives trust that the Entomologist's 

 Monthly Magazine will continue to receive and to deserve the support 

 and appreciation which has been extended to the " labour of love " 

 of the succession of Editors for the past half -century. 



THE BRITISH SPECIES OF GYRINUS. 

 BY D. SHARP, M.A., P.R.S. 



(Plates IX and X.) 



In this Magazine, July, 1868, there was published a brief article 

 by me on the British Gyrinidse. Since then several important works 

 on the family have appeared, of which it is here only necessary to 

 mention the following, viz.: — (1) Eegimbart's "Monograph of the 

 Gyrinid^;' 1883, with Supplements, 1886, 1891 and 1907 ; (2) Vol. 1 

 of Fowler's " British Coleoptera " (1887) ; (3) a valuable though brief 

 paper by Edwards in the " Entomologist," 1890 ; (4) Vol. I of 

 G-anglbauer's " Kafer," etc. (1892) ; and (5) Beitter's " Fauna 

 Germanica," Vol. I (1908). 



Edwards' brief paper was specially valuable, as he introduced the 

 studv of the «deagus. It has, however, remained unknown to the 



