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A SYNONYMIC LIST OF THE BRITISH 

 TRICHOPTERA. 



By R. M^Lachlan, F.L.S. 



In the course of the few remarks on the British Trichoptera - 

 that I had occasion to make in the last " Annual/^ I men- 

 tioned that I hoped, before the end of 1864, to have a 

 monograph of the British species in a forward state. At 

 that time I had even hoped that, before the time men- 

 tioned, this work woukl have been in the printer's hands ; 

 but occupations compelhng an occasional extended absence 

 from home, and consequent inability to consult materials and 

 books, have rendered it impossible that it shall appear this 

 year. Nevertheless, I am so far advanced, that the greater 

 portion of the MS. is written, and some of the plates in the 

 hands of the engraver. I shall not therefore say anything 

 here concerning the few unrecorded additions to our list, or 

 any other information I may have acquired during the year, 

 reservincr all for embodiment in the work. Havinsj been 

 however for several years an annual contributor to this " Year- 

 Book" of Entomology, I am unwilling that the present 

 volume should appear without something from my pen, on 

 my favourite order, and have therefore extracted from the 

 MS. a synonymic Catalogue of 123 species, which are all 

 I can at present enumerate as British. The subject is one 

 of great difficulty, and I fear will always remain so, owing 

 to the impossibility of recognising many of the species de- 

 scribed by the earlier investigators of the group, where the 

 types are not extant. Wherever it can be satisfactorily 



