182 Miscellaneous. 
that the ink-bag does not present the modifications supposed to 
occur in it, but that the form of the bag corresponds to other cha- 
racters of systematic importance and also frequently to a different 
habitat. 
The following table, taken from Steenstrup’s ‘ Note Teuthologice,’ 
furnishes an 
Analytical Key to the Species of the Genus Sepiola from the 
Mediterranean, the Atlantic, and the North Sea. 
A. Ink-bag trilobate or auriculate ; fins ex- 
ceeding in length the half of the mantle 
(equal to 3 of the mantle). 
a. Suckers of all the arms biseriate...... 1. S. Rondeleti, Leach. 
8. Suckers of the ventral arms pluriseriate 
(4-seriate) at the apex ; suckers of the 
oper ‘arms biseriate 7: 2: <).06<.9 5<' 2. S. atlantica, VOrb., 
B. Ink-bag simple or pyriform ; fins nearly 
equalling half the mantle, but never 
longer than half. 
2 Y “ye {S 
a. Suckers of all the arms biseriate .... ve ; ele Be 
. S. scandica, St. 
B. Suckers of the ventral arms pluriseriate 
at the end; suckers of the other arms 
ISGFIALO 6s eee oi « Sooogeooeudn ac 5. S. Owentana, d’Orb., St. 
All these species (1-5) differ from each other by the clubs of the 
tentacles, as regards the relative size of the suckers, and the number 
of longitudinal series and of the teeth in the horny rings. S. Owen- 
tana, especially, differs from all the rest in the very small suckers of 
its clubs. The valve of the funnel in the males is half or one third 
of the size of that of the females; it seems to be entirely wanting 
in the male of Sepiola scandica (?=S. Rondeleti of the English and 
Scandinavian faunas). The species with long fins (1 and 2) have 
lanceolate cultriform sepiostega. Those with short fins (8-5) have 
narrow, linear, or setiform sepiostega, to some extent resembling 
those of the type species of the genus AMioteuthis, Verrill. The other 
species of that genus are referred by Steenstrup to a new genus 
under the name of Huprymna. 
The commonest species in the North Sea and the Pas de Calais is 
Sepiola atlantica, @Orb. At Roscoff S. atlantica seems to be less 
common, and the dominant form is S. Rondeleti or S. scandica, both 
of which occur. From a statement of M. Girod it seems probable 
that S. Oweniana also exists at Roscoff. 
According to M. Girod a specimen of S. atlantica obtained by 
dredging had the ink-bag simple; all the individuals seen by the 
author had it trilobate. M. Girod based his identification solely 
upon the pluriseriate suckers, the possession of which combined with 
the simple ink-bag is shown by the above table to lead to S. Owen- 
