f. Sipunculids. 



Fisher, W. K. * 



19^7- New genera ana species of echinoid and sipunculoid 



worms. Proc. U. S. Nat. Mus. 97:351-372- 

 I95O. The sipunculid genus. Phascolosoma . Ann. Mag. Natur. 



Hist. (12)3(30): 5^7-552. 

 I952. Sipunculid worms of California and Baja, California. 



Proc. U. S. Nat. Mus. 102(3306 ) :371-^50- 



Gerould, J. H. 



I9I3. The sipunculids of the Eastern Coast of North America. 

 Proc. U. S. Nat. Mus. kk( 1959) '-313-^37 • 



Hedgpeth, J. W. 



195^. Miscellaneous vermes, Gulf of Mexico. In Galtsoff, 

 P. S. (ed. ), Gulf of Mexico its origin, waters and 

 marine life. Fish. Bull. U. S. 55(89) : i )-l9- 1 4-20. 



Hyman, L. B. 



I959. The Invertebrates: Smaller Coelomate Groups, 

 Chaetognatha, Hemichordata, Pogonophora , Phoronida. 

 Ectoprocta, Brachiopoda, Sipunculida, the Coelomate 

 Bilateria. Vol. 5, McGraw-Hill Book Co.. Inc.. New 

 York. 783 p. 



196 



