REFERENCES

Drew, G. A.1901
The life history of Nucula delphinodonta. Quart, jour. sc. vol. 44, pt. 3.

Pelseneer, P.1891
Contribution á l'étude des Lamellibranchs. Arch. d. biol. xi.

Stempell1899
Zur Anatomie von Solrmya togata. Zool. Jahrb. Bd. xiii.

(Contribution from the Zoological Laboratory of Pomona College)