Horn. — Cephalopoda, 
PLATE 7. 
Pterygioteuthis giardi. 
. Left dorsal arm of specimen No. 7966; X about 8. 
. Left upper lateral arm of the same specimen; X about 8. 
. Left lower lateral arm of same specimen; X about 8. 
. Left ventral arm of the same specimen; X about 8. 
. Left tentacle of the same specimen; X about 8. 
. Dorsal aspect of the whole animal; combined from several specimens; X 2. 
. Portion of radula of specimen No. 7959 B ; X 180. 
. Front view of a hook-bearing sucker of specimen No. 7966; X 64. 
. Side view of a similar sucker; X 64. 
