SUB-CLASS IT 
Acanthoteuthis, 
Fic. 1247. 
Acanthoteuthis speciosa, 
Miinst. Eichstadt. A, 
Impression of shell, the 
proostracum 
ally bent sideways. 
Proostracum 
septa and 
2/o. 
accident- 
B, 
showing 
siphonal 
funnels. 
Wagener and Miinst. (Belemnites, Quenst. p.p. ; 

Fic, 1248. 
Acanthoteuthis speciosa, 
Miinst. Solenhofen. Pro- 
ostracum. 2/3. 
DIBRANCHIATA 599 
Ostracoteuthis, 
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Neos ES fF S \ ) Ai 
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bag x (FA 
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NS 4 ee A x) 
a tof : 

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Fig. 1246, 
Acanthoteuthis speciosa, Miinst. 
Lithographic 
Slates; Eichstadt, Bavaria. Impression of arms 
and body. 1/. 
Zitt.), (Figs. 1246-1248). Phragmocone with numerous 
septa, and siphuncle having short siphonal funnels ; 
enveloped externally in a thin granular calcareous layer 
representing the guard. Surface of proostracum divisible 
into a broad dorsal, and two narrow lateral areas which 
are longitudinally striated and taper toward the front. 
Dorsal area ornamented with fine parabolic and also 
straight longitudinal lines; anterior margin rounded. 
An impression of the animal found in the Lithographic 
Slates shows an ink-bag and ten powerful arms about 
the head, which are beset with two rows of opposite, 
horny, falciform hooklets. Upper Jura. 
Phragmoteuthis, Mojs. (Fig. 1249). Proostracum 
twice as long as the conical phragmocone, with dorsal 
area bounded by asymptotic lines, and two shorter 
lateral areas; anterior margin of all areas rounded. 
Phragmocone invested by a brownish layer represent- 
ing the guard. Trias (Raibl Beds). 
Belemnoteuthis, Pearce (Conoteuthis, d’Orb.), (Figs. 
