220 WILLIAM BLAXLAND BENHAM. 
on somites x11 to xiv. There are four male pores situated in 
one species on somites XVI, XviII, and in the other on somites 
XXI and xx1lII. 
Geogenia, from Natal, has the clitellum on somites 1x to 
xvu1; the sete alternate anteriorly. There are two ventral 
pits, one in xvi, the other in xvii (? male pores or copulatory 
pits), and the “ lateral pores” (probably he refers to nephridio- 
pores) are in a line with the dorsal sete. 
Alyattes, from Buenos Ayres, has the sete separated 
posteriorly. 
Eurydame, from St. Joseph, near Panama, has the anterior 
setz paired, but the posterior ones are further apart. 
Hegesipyle, from Natal, has all the sete wide apart, except 
the ventral ones anteriorly. 
Then follow five, which Perrier considers merely species of 
Pericheta, so that it will be best to use Kinberg’s names 
specifically if they are to be retained. 
Amyntas, from Guam, with fifty or sixty setz per somite. 
Nitocris, from Rio Janeiro, with fifty-two setz per somite. 
Pheretima, from Tahiti and California, with fifty sete 
per somite. 
Rhodopis, from Java, has fifty to sixty sete per somite, 
has the clitellum on somites x11, x111, and the male pores between 
somites xIv and xv (so that this differs from Perichztz where 
the clitellum and male pore is constant). 
Lompito, from Mauritius, with forty-four setz per somite. 
P. catinus, from Oahu, with forty setz per somite. 
Kinberg also describes two worms which he puts into 
Savigny’s genus Hypogzon, but denies the existence of the 
characteristic dorsal seta. 
H. havaicus, from Oahu, is 44 mm. long, contains 100 
somites, and has the clitellum on somites xx1x and xxx. 
H. atys, from Buenos Ayres, is 30 mm. long, by 4 mm. 
broad, and contains 140 somites. 
Thus, in each of the species of ‘‘ Hypogzon,” in which a 
clitellum is mentioned, it differs in position. In the absence 
of any record of anatomical detail, it is impossible to tell what 
