204 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 14 



PLATE 3 



Fig. 1. Desmacystis sandalia (Robertson), with ribbed gymnocyst and 

 median avicularian. 



Fig. 2. Cupuladria canariensis (Busk), zooecia and distal vibracular 

 chambers. 



Fig. 3. The same, dorsal side showing pores. 



Fig. 4. Electra crustulenta {V3\\a.i)^\a.T. arctica'&oTg. 



Fig. 5. The same, another variety. 



Fig. 6. Electro anomala new species, with remarkable decoration of 

 branched chitinous spines on the operculum. 



Fig. 7. Electra biscuta new species, complete development with 

 branched spines. 



Fig. 8. The same, young stage. 



Fig. 9. C ar base a car base a {^oX^inAev), 



Fig. 10. Terminoflustra membranaceo-truncata (Smitt), showing the 

 vicarious avicularium. 

 (Figs. 9 and 10 reduced Yz in comparison with other figures.) 



