Plate 39. 



Fig. 1. VayiiinliiKt advena. X30. Side view. Off Sand Key, Florida. 

 2,3. Taginiilina advena. X25. Side views. D2641. 



4. Tafiiiiuliiia advena. X25. Side view. Off Bell, Fowey, Florida. 



5. Ta(iinulina peregrhia. X30. Side view. D2311. 



6, 7. PoJymorpluna lactea, var. novangliae. X25. Side views. Cobscook 



Bay, near Eastport, Maine. 

 S. Polinnorphina lactea, var. novangliae. X25. Side view of specimen 



with fistulose last-formed portion. D2097. 

 9. Polijmorpluna lactea. Side view of young specimen. After 



Williamson. 



10. Polymorphina cylindroides. X64. o, front view; b, side view. 



After Heron-Allen and Earland. 



11. Poliimorphina lactea. X75. Side view of double specimen. After 



Heron-Allen and Earland. 



217 



