NEW SPECIES OF OCNERODRILUS. 259 



glands are larger and the septal glands are smaller than 

 in other species. In reality they are confined to the same 

 somites as other species of the genus. 



The anterior septal gland in somite v is hardly any larger 

 than the one in somite vi. The one in vii is hardly lower 

 than the one in vi, while the septal gland in somite viii is 

 much higher than in other species except O . occidentalism 

 but with a much smaller base. The anterior septal gland 

 has the broadest base, those following have shorter bases, 

 and the last one in somite viii has the shortest base of 

 all; this is the opposite of what is the case in the other 

 species. But this peculiarity is not the only one as re- 

 gards these glands. They are all of them less lobed 

 than in any other species except perhaps O . occidcntalis 

 and Hendriei, the anterior gland in somite v being espe- 

 cially entire and continuous in outline. 



The (xso-phagiis which in most other species is tubular 

 and hardly contracted is in this species very much nipped 

 by the septa. Its walls are also thicker except in somite 

 xii where they are remarkably thin and transparent. In 

 this somite also, the tubular intestine (or posterior part 

 of the oesophagus) is narrower, the sacculated intestine 

 commencing first in somite xiii, where, as usual, is also 

 found the ovary. The inflation of the sacculated intes- 

 tine is not any greater in somite xiii than in an}^ of the 

 other clitellial somites. 



Testes in x and xi as usual. 



The sperm-sacs are small, of undecided form situated 

 in the upper part of somites ix, x, xi and xii. The an- 

 terior and posterior sperm-sacs are not deeply lobed. In 

 this respect the species differs from all the others. 



The spcrmatheca (fig. 23-36) is long, cylindrical, of 

 even outline, thick and opaque, without any trace of di- 

 verticula. It resembles that of 0.agricola\n\)[\\'& respect. 



