118 PROCEEDINGS OP THE ACADEMY OF [1880- 



5. Outer part of two series of plates with 8 plates,* ^f^; aa, 



outermost. 



6. Outer part of another series with 3 plates,* ^^. 



7. a-6, vagina; c, gland, hastatoria; d, opening of the bag of 



the spur; e, spermatoduct ; /, penis,* -\'-. 

 8,9. Spermatotheca ; c, its chief duct; d^ gland, hastatoria ; h. 

 spermatocysta ; e, duct to the mucous gland,* -\^-. 



10. a, Duct of the gland, hastatoria; b, the bag of the spur; c, 



opening of the bag,* ^^-. 



11. a, spermatoduct; &, opening of the bag at the bottom of the 



penis ; in the interior a dart (?),* ^4-- 



Adalaria p7'0xima (A. and H.). 



12. Tubercles of the back. 



13. A part of the rhachis from above; a, median plates; &6, large 



lateral plates,* ^^. 



14. Part of the radula, obliquely, from the side , the hooks of the 



large lateral plates of both sides,* ^f^. 



15. Two series of (9) external plates ; a, the innermost ; b, the 



outermost,* ^f^. 



Adalaria albopapillosa (Dall). 



16. Part of the surface of a tubercle of the back,* ^^. 



Adalaria pacijica, Bergh. 



17. a, median plate ; 6, large lateral plates from the side,* ^^. 



" Lamellidoris muricata (0. Fr. Miiller). 



1 8. The vesica fellea ; a, its duct. 



Plate II (X). 



Adalaria pacifica^ Bergh. 



1. Median pseudo-plate (or boss), from the upper side,* ^^^. 



2. 2. Part of the radula, with series of (5-7) lateral plates ; a-a, 



1-2 complete rows of (15) external plates, and 1-2 incom- 

 plete rows ; 66, innermost plates of the row ; ce, outer- 

 most,* -f-. 



3. Outer part of a row with 9 erect plates ; a, innermost,* ^^^. 



