THE ANNALS 
AND 
MAGAZINE OF NATURAL HISTORY, 
[SIXTH SERIES.] 
No. 50. FEBRUARY 1892. 
XVIL—The Earthworms of the Vienna Museum. 
By Frank E. Bepparp, M.A., F.R.S.E. 
[Plate VII.] 
Pror. CLAus has been so good as to let me examine the 
collection of earthworms preserved in the Vienna Museum, 
which includes the forms described by Schmarda in his 
‘Neue wirbellose Thiere’ *, as well as a number of unnamed 
species from various localities. 
‘Schmarda’s species have been so long a mystery to the 
students of this group of Annelids, that I am very glad to be 
able to identify them. 
“‘Hypogeon heterostichon.” 
Schmarda’s diagnosis of the species runs as follows :— 
“ Series setarum in dorso octo, bine in antica parte conver- 
gentes, in postica divergentes.”’ 
Clearly, therefore, it should not be placed in the genus 
Hypogeon as defined by Savigny ; for that genus has nine 
sete per segment, the unpaired seta being dorsal in position. 
Such a character is quite sufficient to distinguish a genus, 
though no doubt the existence of this ninth seta requires 
further proof. 
* ‘Neue wirbellose Thiere &c.,’ Leipsic, 1861, Bd. ii, 
Ann. & Mag. N. Hist. Ser. 6. Vol. ix. 8 
