210 MR. F, E, BEDDARD ON | Mar. 3, 
is an egg of a Struthio has been proved by von Nathusius. Its 
geological age cannot certainly be determined because it was found 
floating ina river. Brandt supposes that it had been embedded 
in the bottom of the river and had been worked out by the water. 
The age of the strata forming the bed of that river is supposed to 
be that of the strata in which von Nordmann? discovered the 
mammalian remains in 8, Russia (environs of Odessa), and therefore 
that of the breccia of Pikermi; but it may be much younger, 
because Nordmann* does not separate the Tertiary from the 
Pleistocene. In the paper above mentioned, he attributes the 
bone-beds of 8. Russia to the “‘offenen Diluvium,” and says that it 
has the same geological age as the bone-beds of the Val d’Arno. 
Therefore we have no evidence of the exact geological time during 
which a Struthio lived in South Russia, and the egg 18 in con- 
sequence of little importance in regard to this question. Moreover, 
it seems to me more than doubtful to assign this egg to the 
modern Ostrich, and “very likely to the species occurring at 
Samos,” as is done in Nicholson and Lydekker’s ‘Manual of 
Paleontology’ (p. 1228). 
5. On a new Genus and two new Species of Harthworms of 
the Family Mudrilide, with some Notes upon other 
African Oligocheta. By Frank EH. Bepparp, M.A., 
ID Ja sSioy JUAN 
[Received March 3, 1903. ] 
(Text-figures 35-38.) 
The first set of specimens referred to in the following descriptions 
form a part of the collection in the British Museum; I am greatly 
indebted to the kindness of the Director for allowing me the 
opportunity of examining them. They belong to two species, 
both of which are undescribed. The first is a third species of the 
genus Stuhlmannia, which I call 
Stuhlmannia michaelseni, n. sp. 
I have examined so many individuals of this form of Stuhl- 
mannia, and the agreement between them is so close, that I have no 
hesitation in regarding it as a distinct species, which I name 
after the founder of the genus, Dr. Michaelsen °. 
The worms were collected by Mr. 8. L. Hinde in the Mt. Kenya 
district. There were thirty mature examples. 
The general appearance and proportions of this new species are 
quite the same as in S. variabilis. The length reaches 100 mm. 
and the diameter 2-2°5 mm. The colour is a yellowish grey; the 
clitellum is greyer. 
1 Nordmann, in ‘ Jubileum semisaeculare Fischeri de Waldheim,’ Moscou, 1847. 
2 Nordmann, Palaontologie Stid-Russlands, 1858. 
3 JB. Hamb. wiss. Anst. vii. (1890), p. 24. 
