1910.] 99 



HELP-NOTES TOWAEPS THE DETERMINATION OP BRITISH 



TENTHREDINIDM, kc. {2Cy continued). 



DOLEEIDES (continued). DOLERUS, Juk. 



BY THE REV. F. D. MORICE, M.A., F.E.S. 



It is fortunate that I could not find room enough m my hist 

 paper to incdude the Table of British Bolerus spp., which had been 

 prepared for publication in it. Since that paper appeared, I have 

 received the concluding part of Dr. E. Enslin's learned and suggestive 

 Revision of the European forms ; and thereupon have entered into a 

 correspondence and exchange of specimens with him, which has cleared 

 up several questions that have long puzzled me, and will enable me (I 

 hope) to present the Table here following in a far more " up-to-date " 

 condition, both as to nomenclature and characterization of the species, 

 than would have been possible last September. Yet even now certain 

 specific names will have to be given more or less provisionally, partly 

 because there is a grave doubt whether all the forms now generally 

 identified with species established by the older authors (Linne, Klug, 

 Hartig, &c.) have been assigned to them correctly ; and partly because 

 several of what have always been considered, and nuist for the present 

 be treated, as distinct species, will almost certainly fall to the rank of 

 varieties and local forms, as our knowledge of this perplexing genus 

 increases. 



Of the forms (about 50 in all) enumerated by Dr. Enslin from 

 Europe and Northern Asia (Siberia) practically just half are known 

 to me as British ; and this half includes all but a very few of those 

 species, which from the range of their distribution abroad might 

 naturally be expected to occur with us. If these few, which are all 

 rarities everywhere, should turn up here, the British list would be 

 practically identical with that of Central Europe. Several forms 

 described \)\ Mr. Cameron as British have not yet been identified as 

 occTirring on the Continent. Some of them, I believe, are known 

 there under other names. Having carefully examined the types at 

 South Kensington, I hope to throw some light on this matter in the 

 " Notes on Species " following my " Table." 



SYNOPTIC TABLE OF BRITISH DOLEBUS Spp. 



1. Abdomen black, no part of it red 14. 



— Abdomen at least partly red 2. 



2. Some or all the legs partly red 9. 



— All legs quite black 3. 



3. Abdomen above red up to and including the apex 4. 



— Abdomen only ringed broadly with red, its apex black 5, 



