PLATE XX. 



PAGE 



Sepia cultrata, Steenstrup, . . .133 



Fig. 1. Dorsal aspect of the specimen ; natural size. 



Fig. 2. Ventral aspect of the specimen ; natural size. 



Fig. 3. The circumoral region, showing the bases of the arms, the inner and 

 outer lips, and the spermatic pad with a few spermatophores ad- 

 hering to it ; magnified 2 diameters. 



Fig. 4. Inner aspect of one of the sessile arms ; magnified 2 diameters. 



Fig. 5. Eight tentacular club ; magnified 7 diameters. 



Fig. 6. Sucker from one of the sessile arms ; magnified about 1 5 diameters. 



Fig. 7. The ventral mandible ; natural size. 



Fig. 8. The dorsal mandible ; natural size. 



Fig. 9. Dorsal aspect of the shell ; natural size. 



Fig. 10. Ventral aspect of the shell ; natural size. 



Fig. 1 1 . Side view of the extremity of the shell, showing the knife-like ridge on 

 the spine ; natural size. 



