KOVITATES ZOOLOGICAE XXII. lOlo. l6l 



Lepidoptera, he preserved to bis last days a tender love for the smallest of 

 moths. 



When he had relinquished his career as a schoolmaster, he remained without 

 a regular salaried emploj-meut, living on the rather considerable fortune left him 

 by his father. The inheritance, hovcever, soon dwindled awa}', and the means of 

 subsistence became more and more precarious. But his outlook on life was opti- 

 mistic, and the frequent embarrassments in which he found himself up to the last 

 five or si,\ years of his life could not daunt his spirits ; they were forgotten as soon 

 as circumstances appeared to assume a brighter aspect. He was separated from his 

 wife, but remained in communication with his only sou to the end. 



In 1888 Warren began work at the British Museum as an outside assistant, 

 being engaged to arrange the Pyrals and Geometers. He i)ublished some papers 

 on the former family in 1890, 1891, and 1892 ; but nearly all the names that he 

 gave to the numerous new species of Geometridae contained in the British Museum 

 collection remained unpublished for the time. Through the kind intermediation 

 of Dr. Giinther, Warren oflered his services to Mr. Rothschild, and in 1892 came 

 to Tring in order to name and arrange the Geometridae and a few other families, 

 such as the Drepanulidae, Thyrididae, and Uraniidae. He lived at Tring for 

 a couple of years, but subsequently removed to London. Although his principal 

 work consisted in the naming of specimens in the Tring Museum and in describing 

 the new genera and species found among our material, Warren was at liberty 

 to assist other entomologists with his rapidly increasing knowledge of the families 

 at which he was working, and many of the new exotic species published by others 

 during the last twenty years had previously been submitted to him. 



When Dr. Seitz asked me if I knew of some one who could undertake to 

 describe the Koctuidae for his work, Die Grosssckmettei-linge der Erde, I mentioned 

 Warren, who at that time was living in London and had very little to do. The 

 Geometridae having already been assigned by Dr. Seitz to a very competent 

 specialist, Warren agreed to come to Tring and devote himself to the Noctuids, 

 and from that time until his death he was happy in having continuous employment 

 without being strictly bound to official hours. 



The number of new species and genera published by Warren is very large, 

 and he will remain known to posterity as the chief specialist in Geometridae 

 of the last two decades. He was assisted in his work by a catalogue he had 

 compiled, containing a description of each species and variety, and, if a specimen 

 had been accessible to him, a carefully executed pencil-drawing. This enormous 

 work, amounting to several cubic feet of manuscript, cannot be published for 

 various reasons, but it will nevertheless remain accessible at the Tring Museum. 

 Some manuscripts on British Microlepidoptera were also found among Warren's 

 papers, but are antiquated by more recent discoveries, and must unfortunately remain 

 unpublished. Several small manuscripts on new species were ready for publication, 

 while some others require arranging and revising before they can go to press. 



Although Warren was essentially an entomologist of the older school, he 

 paid more careful attention to the structure of the wings, antennae, and legs, 

 as far as these organs can be studied with an ordinary lens, than did (and do) 

 some of his contemporaries, and for this reason his work will be more highly 

 appreciated by the specialist than by the general collector. — K. Jordan. 



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