410 Illinois State Laboratory of Natural History. 



elongated sac, and a distinct duct about one half 

 as long as the sac. Two diverticula communicate 

 with the duct about midway of its length. They are 

 approximately equal and one half as long as the sperma- 

 theca. Each has a narrow duct and an elongated sac. 

 The ovaries have the usual situation in XIII. There are 

 no ovisacs. The oviducal pore of each side is anterior 

 to seta 1 and in line with it. 



In M. he7)ipeli, characters are combined which seem to 

 bring the genera Khododrilus and Deltania very near to- 

 gether and to emphasize the necessity of combining them 

 with Microscolex as Beddard has done ('95, p. 228). Dr. 

 Eisen has expressed his opinion in favor of the same 

 course in a letter recently received, as has also Dr. Ben- 

 ham. 



The presence of Microscolex, Sparganophilus, and Dip- 

 locardia in Florida serves to bring the earthworm fauna 

 of that region into close relationship with that of the 

 more western parts of this country and South America. 



Champaign, November 6, 1896. 



LIST OF PAPERS CITED. 



'93. Beddard, F. E. — Some New or Little-known Oligo- 

 cbseta. Proc. Ro3\ Phys. Soc. Edinb., XII., pp- 

 30-45. 



'95. Preliminary Account of New Species 



of Elarthworms belonging to the Hamburg Mu- 

 seum. Proc. Zool. Soc. London, Pt, II., pp. 210- 

 239. 



'91. Bourne, A. G.— Notes on the Naidiform Oligochseta; 

 containing a Description of New Species of the 

 Genera Pristina and Pterostylarides, and Remarks 

 upon Cephalization and Gemmation as Generic 

 and Specific Characters in the Group. Quart. 

 Journ. Micr. Sci. (n. s.), Vol. XXXII. , pp. 335, 

 35G. PI. XXVI. and XXVII. 



