168 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.52. 



Spermathecae in 9, 10, and 11, extending freely into the somite cavi- 

 ties with ducts of moderate length. 



//. chloroticus is widely distributed in Europe and in various parts 

 of the world where Europeans have settled. In North America it has 

 been reported from Greenland, North Carolina, Vancouver, California, 

 Mexico, and Guatemala. 



New localities : District of Columbia, Indiana, and Colorado. 



Subgenus Dendrobaena (Eisen), 1874. 



The following characters are common to the more typical members 

 of this subgenus: Setae, widely paired or separate. Spermathecal 

 pores on 9/10 and 10/11, in the setae lines c or d. Three pahs of 

 sperm sacs in 9, 11, and 12. 



There are species that combine some of these characters with others 

 belonging to other subgenera, and thus break down the dividing 

 lines and make the classification difficult. 



HELODRILUS (DENDROBAENA) OCTAEDRUS (Savigny). 



Enterion octaedrum Savigny, 1826: 183. 



Allolobophora oclaedra Rosa, 1887: 2. 



Eelodrilm {Dendrobaena) octaedrns Michaelsen, 1900a: 494. 



Dendrobaena boeckii Eisen, 1874: 53. 



Length, 2.5-4 cm. Somites, 80-95. Color, violet-brown. Pro- 

 stomimn, epilobic. Setal intervals aa, ah, Ic, and cd approximately 

 equal; dd somewhat greater than either. Chtellmn on 27, 28, or 29-33 

 or 34. Tubercula pubertatis on 31-33. Fhst dorsal pore on 4/5. 

 Spermiducal pores on 15, between h and c. Oviducal pores on 14, 

 slightly dorsad from h. Spermathecal pores on 9/10-11/12, m the 

 seta line d. Septa aU thin with a shght thickening of 13/14 and 14/15. 

 Sperm sacs m 9, 11, and 12. Spermathecae usually in 9, 10, and 11, 

 but occasionally one or more may be found in the somites next 

 posterior. 



H. octaedrus is known from various parts of Europe, northern Asia, 

 Iceland, and Greenland. In North America it has been reported 

 from Newfoundland and Mexico. 



New locahty : Colorado (Boulder) . 



HELODRILUS (DENDROBAENA) SUBRUBICUNDUS (Eisen). 



Allolobophora subrubicunda EisEii , 1874: 51. 



Eelodrilm (Dendrobaena) rubidus, var. subrubicunda Michaelsen, 1900a: 490. 



Eelodrilm (Dendrobaena) subrubicundm Michaelsen, 1910: 52. 



Length, 4-7.5 cm. Somites, 60-110; usually nearer the upper 

 limit. Color of antero-dorsal surface, more or less red. Prostomium, 

 epilobic §. Setae, widely paired; hc:cd:dd = 2:1 -A; cd, is a little 

 greater than ah. CUtellum on 26-31, occasionally invadmg 25 or 32. 



