600 
1250, 1251). 
into a long proostracum. 


Fie. 1249. 
A, Phragmoteuthis bisinuata, 
Bronn. sp. ‘Trias; Raibl, Car- 
inthia. Ph, Phragmocone ; Po, 
Proostracum; L, Lateral area 
of proostracum; d, Ink- bag. 
B, Hooklets of arms, 1/) (after 
Suess). 

Fia. 1253. 
Spirula Peronii, Lam. 
Recent; Pacific. Longi- 
tudinal section, 1/;. a, Pro- 
toconch; c, Caecal com- 
mencement of siphuncle ; 
p, Prosiphon; s, Siphuncle 
after Munier-Chalmas). 
one species. 
MOLLUSCA 
SUB-KINGDOM VI 
Like Acanthoteuthis but smaller, and phragmocone not produced 
Upper Callovian and Lower Cretaceous. 


Fia. 1250. 
Belemnoteuthisantiqua, 
Pearce. Oxford Clay; Chris- 
tian Malford, Wilts. A, Partly 
restored specimen, 1/9. oc, 
Eyes; m, Mantle. Other 
letters as in Fig. 1249. B, 
Hooklet, 4/; (after Mantell). 
Family 3. 
Spirulidae. 
Fic. 1251. 
Belemnoteuthis, Pearce sp. Oxford Clay ; 
Gamielshausen, Wiirtemberg. A, 
Dorsal and ventral aspects. B, Septum 
and siphunele. 

Fig. 1252. 
Spirulirostra Bellardii, Mich. sp. Mio- 
cene; Superga, near Turin, Italy. 4A, 
Side view. 3B, Longitudinal section. R, 
Guard; Ph, Phragmocone. 
1) (after 
Munier-Chalmas). 
Zittel. 
Shell reduced to a chambered phragmocone coiled into a flat 
spiral, the coils not in contact ; situated in posterior part of the 
body, and the greater portion contained within the mantle. In 
addition to the eight arms, two long tentacles without hooks are 
placed between the third and fourth pairs. 
Spirulirostra, VOrb. (Fig. 1252). 
triangular pointed guard, which is excavated anteriorly for the 
reception of the chambered phragmocone. 
a spiral, but speedily becomes straight, and has septa pierced on 
the concave ventral side by the marginal siphuncle. 
Upper Miocene of Turin. 
Spirulirostrina, Canavyari. 
reduced to two small, lateral wing-like appendages. 
of Sardinia. 
Spirula, Lam. (Fig. 1253). 
Pliocene and Recent. 
Shell composed of a short 
The latter begins as 
Only 
Like the preceding, but guard 
Neocene 
Guard wanting. Chambered phragmocone enrolled 
