LOLIGIDiE : GONATUS. 
67 
c. Shell elongate , hroad. Animal — — — ? Fossil . 
5. Teudopsis. Shell pennate, very broad below, narrow above. 
6. Leptoteuthis. Shell lanceolate, very broad above, acumi- 
nate below. 
7. Beeoteuthis. Shell oblong, dilated and winged behind, acu- 
minated above. 
8. Belemnosepia. Shell broad, central part dilated and pro- 
duced in front, winged behind. 
d. Shell shorter than the Bach . Fin short , on the middle of the 
Sides of the Bach. 
9. Kossia. 
B. Head attached to the Bach of the Mantle by a broad cervical 
Band. Fin short , in the middle of the Sides of the Bach . Shell 
narrow , with a central and two marginal Bibs. 
10. Sepiola. Cups of sessile arms nearly sessile. 
11. Fedenas. Cups of sessile arms very longly peduncled. 
A. Head separate from the Body. Mantle free all round. Shell 
pennate. 
a. Fin posterior , dorsal , rhombic. Shell as long as Bach. 
1. GONATUS. 
Body cylindrical, acute behind. Fins posterior, rhombic, connate 
behind, separate in front, elongated, linear. Ventral part of 
mantle with two interior marginal ridges, fitting into grooves on 
the base of the siphuncle, and a dorsal ridge and groove. — Head 
cylindrical ; buccal membrane rounded, not lobed, without any 
cups. Eyes large, covered with the skin, with a small trans- 
parent spot; no eyelid. — Sessile arms curved, rounded exter- 
nally ; cups small, conical, contracted at the top, nearly uniform 
in size, in four series, all with small circular rings. Tentacular 
arms cylindrical, flattened internally and granular on the edges ; 
club small, compressed, and finned at the tip, external ; with 
ranges of small, nearly sessile, equal-sized cups (more numerous 
near the base), and with a large sessile cup armed with a hook in 
the middle of the lower part. — Siphuncle short, conical, without 
superior central band, and no interior valve. — Shell horny, thin, 
lanceolate, pennate, narrowed and extended in front, which is 
slightly margined on the sides. 
Onycotheutis sp. Moller , Moll. Green , 3. 1842. 
Moller describes the tentacular arms with cups to the base ; 
this is not the case, but each side of the flattened inner surface is 
