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EXPLORATION OF ALASKA. 267 
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Outer part. of two series of plates with 8 plates,* 252; 
outermost. 
Outer part of another series with 3 plates,* 252, 
a—-b, vagina; c, gland. hastatoria; d, opening of the bag of 
the spur; e, spermatoduct; /, penis,* 3°. 
9. Spermatotheca; c, its chief duct; d, gland. hastatoria; b, 
spermatocysta ; e, duct to the mucous gland,* 55. 
a, Duct of the gland. hastatoria; b, the bag of the spur; c¢, 
opening of the bag,* 29°. 
a, spermatoduct ; b, opening of the bag at the bottom of the 
penis; in the interior a dart (?),* 33°. 
Adalaria proxima (A. and H.). 
Tubercles of the back. 
A part of the rhachis from above; a, median plates; 6b, large 
lateral plates,* 732. 
Part of the radula, obliquely, from the side, the hooks of the 
large lateral plates of both sides,* 732. 
Two series of (9) external plates; a, the innermost; , the 
outermost,* 27°. 
: Adalaria albopapillosa (Dall). 
Part of the surface of a tubercle of the back,* 25°, 
Adalaria pacifica, Bergh. 
a, median plate; 6, large lateral plates from the side,* 2° 
Lamellidoris muricata (O. Fr. Muller). 
The vesica fellea; a, its duct. 
PuateE ITI (X). 
Adalaria pacifica, Bergh. 
Median pseudo-plate (or boss), from the upper side,* 252, 
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; bb, innermost plates of the row; cc, outer- 
most,* 37°. 
Outer part of a row with 9 erect plates; a, innermost,* 77°. 
6 
