( 6 ) 



contrived, without other assistance, to amass 610 named species by the 31st August, 1811, 

 when I was introduced to Mr. Stone and saw a collection (of Lepidojjtera only) for the first 

 time, and great was my surprise at its apparent extent! Mr. Stone kindly supplied me with 

 numerous fine Lepidoptera, and within a few months a I became through his means introduced 

 to my much lamented and celebrated friend Dr. Leach, whose rich and apparently unapproach- 

 able collection, instead of damping my ardour, only stimulated me to fresh exertions. The 

 following is a tabular view of the progress of my collections originating from these exertions: — 





1 January, 

 1810. 



August, 

 1811. 



August, 

 1814. 



February 

 1823. 



Now b 

 about 





16 



1 



1 

 1 



1 



Y 



s 



> 



1121 

 15 



126 

 681 



311 



2773 



6 



41 



8 



287 



189 



6 



1493 



121 



128 



1350 



933 

 9 



3400 



7 



65 



9 



370 



380 



170 



1920 



180 



230 



3250 



3 



2900 



11 





Dictyoptera 







Trichoptera 7 



Crustacea 



20 



610 



2254 



7105 



12,895 

 500 



Spe 



20 



610 



2254 



7105 



13,395 



CIMENS 



4936 



25,640 



92,000 





" Including in the latter about 6500 metamorphoses." 



Prior to 1825 Mr. Stephens devoted much of his attention to Ornithology; indeed the 

 volumes of Shaw's General Zoology relating to birds, published from 1815 to 1825, were 

 entirely written by him, and must not only have abstracted much of his time but also have con- 

 siderably diverted his thoughts from his favourite pursuit. 



To one who was writing a systematic work upon one branch of Natural History, who had 

 compiled when still in his teens a Manuscript Catalogue of British Animals, and who from that 

 time had been continuously forming a most extensive Collection of British Insects, the idea 

 seems very natural of preparing a complete Catalogue of those Insects, and describing them in 



a March, 1812. 



b The date when this was written is not mentioned ; it was, however, subsequent to 1839. 



