166 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.52. 



to the mid-dorsal line. Septa 6/7-9/10, considerably thickened; 

 others to 14/15, but slightly. Sperm sacs in 9-12. Spermathecae 

 on dorsal side of 10 and 11 with but short ducts. 



//. roseus is v/idely distributed in Europe and in various parts of 

 the world where Europeans have settled. In the United States it has 

 been reported from New York, Georgia, Indiana, Illinois, Louisiana, 

 Arizona, and California. New locality: Maine. 



HELODRILUS (EISENIA) VENETUS var. HORTENSIS. 



Allolobophora subrubicunda iormB, hortensis Mien abi^sbn , 1890: 15. 

 Allolobophora veneta hortensis Rosa, 1893: 429. 

 Eisenia veneta var. hortensis Michaelsen, 1900a: 477. 

 Eelodrilus (Eisenia) venetus var. hortensis Michaelsen, 1910: 30. 



Length, 3.5-5 cm. Somites, 80-120. Setae, widely paired; 

 posterior to the clitellum, ah :hc:cd = 5:9 -.5. Clitellum on 24 25, 26, 

 or 27-32 or 33. Tubercula pubertatis, two pair on 30 and 31. First 

 dorsal pore on 5/6. Spermiducal pores on 15. Spermathecal pores 

 on 9/10 and 10/11, close to the dorsal median line. Sperm sacs in 9, 

 11, and 12. 



H. venetus liortensis has been reported from various parts of Europe 

 and from southern Africa and South America. The only record 

 from North America is that of Michaelsen (1900:12), of specimens 

 collected by Doctor Eisen at San Francisco, California. 



Subgenus Allolobophora Eisen, 1874. 



Setae more or less closely paired. Sperm sacs, four pairs in 9-12; 

 those of 10 approximately as large as those of 9. 



HELODRILUS (ALLOLOBOPHORA) CALIGINOSUS (Savigny) f. TYPICA and f. TRAPEZOIDES 



(Dugfis). 



Enterion caliginosum Savigny, 1826: 180. 



Allolobophora caliginosa Rosa, 1893: 442. 



Helodrilus (Allolobophora) caliginosus Michaelsen, 1900a: 482. 



Allolobophora turgida Eisen, 1874: 46. 



Allolobophora turgida forma tuberculata Eisen, 1874a: 43. 



Lumbricus trapezoides Dug^s, 1828: 289. 



Helodrilus (Allolobophora) caliginosus trapezoides Michaelsen, 1900a: 483. 



Length, very variable, 6-17 cm. Somites, 105-240. Color of 

 antero-dorsal surface, brown-red; very variable in intensity in 

 different specimens. Prostomium, epilobic. Setae very closely 

 paired, especially those of the lateral pairs. Clitellum on 27-34 or 

 35. Tubercula pubertatis in f. typica on 31 and 33 and in f. trape- 

 zoides on 31-33. (The latter is by far the most common in North 

 America.) Conspicuous glandular papillae surround the ventral 

 setae of 9, 10, and 11 and in the clitellar region are very constantly 

 present on 32-34 and less certainly on 28 and 30. First dorsal pore, 

 usually at 9/10. Spermiducal pores on 15, rather more than half 



