Article X. — Notes on Species of North American Oligocheta. 

 III. List of Species found in Illinois, unci Descriptions 

 of Illinois Tnhificidce. By Frank Smith. 



The study of Illinois Oligochceta has been mostly confined 

 to collections of the Illinois State Laboratory of Natural 

 History, made near the Biological Station at Havana, 111., 

 and in the vicinity of the University of Illinois, at Urbana ; 

 it is probable, therefore, that several species occur in the 

 State which are not included in the following list. Thus far 

 no attention has been given to the Discodrilidu and birt 

 little to the Enchytr(eid(e of the State. 



A list of the earthworms found in North America was pub- 

 lished in 1888 by Garman in Vol. III. of this Bulletin, in 

 which those mentioned as occurring in Illinois are three 

 species of LumhricidiC, one of Acanthodrilidie, and one of 

 PericJuEta which had become established in the University 

 greenhouses. To these must now be added seven other 

 species, most of which have been described since Garman's 

 paper appeared. 



The species recorded have all been identified by the writer, 

 but a considerable part of the detailed study of sections of 

 the two new species of Tnhificidce here described has been 

 made by a student of the University of Illinois, Miss Ella V. 

 Engstrom, whose careful work has been of material assistance 

 in the preparation of this paper. The drawings for the 

 figures were made by Miss Lydia M. Hart, Artist of the 

 Illinois State Laboratory of Natural History. 



LIST OF SPECIES.' 



Luvihricidie. 



Lumhricus herculeus Savigny. Urbana; infrequent. 

 Allolohophora frtida Savigny. Urbana; abundant. 

 Allolohophora rosea Savigny.- Urbana; frequent. 

 Allolohophora profuga Rosa. Urbana ; abundant. 



' The classification of familiesis tliat adopled by Heddard in his Monograph. 

 - y4. mwoosa Eisen. 441 



