﻿368 THE ENTOMOLOGIST. 



A PRELIMINARY LIST OP THE INSECT-FAUNA OF 

 MIDDLESEX. 



Compiled by T. D. A. Cockerell. 



During the past few years Mr. F. G. Fenn has had in hand 

 the preparation of a list of the insects of Isleworth, and now 

 that he has removed to London he has kindly given me permission 

 to prepare his records for publication. While doing so, it seemed 

 advantageous to gather together various unpublished records of 

 Middlesex insects which I had in hand, and to publish the whole 

 as a contribution to the fauna of the county. I at first intended 

 to group the species under the localities ; but it was represented 

 to me that a systematic list, with the localities given for each 

 species in order, would be more useful, and I have adopted this 

 arrangement. I should have liked to make it a complete list of 

 all the known Middlesex insects, but the labour of compilation 

 from all the published papers on the subject is more than I can 

 at present find time to attempt, and I am obliged to leave it only 

 as complete as circumstances permit. I shall quote published 

 records only when I have the species recorded in no other way, 

 and shall only give one published record as a rule for each such 

 species, though there maybe more existing ;„ that is to say, I 

 shall make the list of species as complete as possible, but shall 

 not repeat numerous already-recorded localities. 



Species recorded from London will be included, as Middlesex 

 will be understood in the old sense, thus including the greater 

 part of London. Species recorded from " near London " and 

 " London district " will be omitted, as these are in most cases 

 not Middlesex records. Everything will be included^common or 

 rare ; but after this preliminary list has been completed, species 

 additional to it will be found from time to time, and it is hoped 

 that before long our Middlesex insect-fauna will be so complete 

 that any addition will be regarded as of importance. 



The compiler is responsible for the nomenclature adopted 

 throughout. Myriapoda and Arachnida will be included. 



As far as possible the collector of each species will be given 

 proper credit; if the collector and recorder are not the same, 

 the names of both will be given, as " Jones fide Robinson/' 

 When only one name is given, it is always the recorder, but usually 

 in such cases he is also the collector. 



The compiler will be exceedingly indebted to any entomologists 

 having Middlesex records, if they will send them to him to be 

 included in the present list. Records of the less-known orders 

 will be specially valued. The following are the chief sources of 

 information at present available : — 



(1.) F. G. Fenn. A MS. list of the insects of Isleworth, 

 taken during the years 1887 — 1889. Assistance was given in 

 identifications by the following entomologists : — Mr. W. West, 



