PLATE VI 



i. Scalpellum Stearnst Pilsbry. 



i. Anima] seen from the left sidej natura] size. 



j, Scalpellum Stearnst Pilsbry, var. robusta n. var. 



I ig. 2. Anima! seen From the left side (Station 5); natural size. 



Fig. 3. Idem (Station 254); magnified 1,1 diameters. 



Scalpellum Stearnst Pilsbry, var. gemina n. var. 

 Fig. 4. Two specimens attached to a sponge (Station 74); natural size. 

 Fig. 5. Valves, isolated; natural size. 



6. First cirrus : magnified 3' , diameters. 

 Fig. 7. Kdge of mandibles; magnified 18 diameters. 



Fig. 8 — \z. Scalpellum Stearnst Pilsbry, var. robusta n. var. 

 I 8. M.de; magnified 78 diameters. 



I ig. 9. Group of thrce males; magnified 52,5 diameters. 



Fig. [O. Voung anima] creeping out of the Cypris-shell ; magnified 78 diameters. 

 I 11. Voung animal, recently attached; magnified 36 diameters. 



I ig. 12. Extremity of capitulum with the primary scutum and tentacles of the 

 \ 'Hing animal of fig. 11; magnified 168 diameters. 



