250 
PROCEEDINGS COTTESWOLD CLUB 
1920 
The Upper Liassic Dibranchiate Cephalopods, other than 
Belemnites, recorded in the list of fossils at the end (p. 342) 
of the Survey Memoir, published in 1893, on “ The Lias 
of England and Wales (Yorkshire excepted),” 1 by H. B. 
Woodward are : “ Teudopsis ” from the Upper Lias (zone 
of Amm. annulatus) of Dorset and Yorkshire ; and “ Belemno- 
sepia [ Geoteuthis ] ” from the Upper Lias (zone of “ Amm. 
serpentinus ”) of Gloucestershire. 
Although the occurrence of the remains of Geoteuthis 
and Teuthopsis has thus been known in the “ Saurian and 
Fish-bed ” of the Upper Lias in the South-West of England 
for nearly fifty years, there appears to have been no attempt 
to specifically determine them, probably owing to their usually 
fragmentary character. 
Mr. L. Richardson has, however, recently submitted to 
the writer a series of Dibranchiate remains from the Upper 
Lias of Alderton, Gloucestershire, some of which are worthy 
of notice. The series includes examples of both Geoteuthis 
and Teuthopsis as well as some detached hooklets. Both 
these genera, as well as detached hooklets, are also represented 
in the British Museum collection from the same locality. 
Geoteuthis, Munster. a 
The best preserved example of this genus fron the Upper 
Lias of Gloucestershire that has come under the notice of 
the writer is a specimen (plate A) submitted to him by Mr. 
L. Richardson. It is displayed on the broken and partly 
weathered surface of one of the lenticular masses occurring 
in the “ Fish-bed,” and presents a dorsal aspect of the remains. 
These include the greater portion of the gladius, a small portion 
of the muscular substance of the body, and, where the gladius 
is absent, the hollow ink-bag with its duct ; there are no remains 
of the head and arms. In this genus the gladius is elongated- 
oval in outline, truncated anteriorly and rounded posteriorly ; 
it consists of several very thin alternating chitinous and 
calcareous layers. Diverging from the posterior end are two 
1 Memoirs of the Geological Survey of the United Kingdom, The Jurassic Rocks of Britain 
vol. iii., 1983. 
2 G. Munster, Beitrage zur Petrefacten-kunde , Heft vi. (1843), p. 68. 
