344 ALLAN HAXCOCK PACIFIC EXPEDITIONS VOL. 7 



PLATE 52 

 (Photographs by Mr. Granville Ashcraft; all natural size.) 



Figure 20, Cistrnides {/oiilJii (Beaufort, \.C.) : tube in lateral view 

 and animal in dorsal view. 



Figure 21, Pcclinaiia californiensis (1130-40): unusually long tube, 

 in lateral view, with animal in dorsal view. 



Figure 22, Pectinaria californiensis nrivpor/nisis (Newport) : portion 

 of tube and animal. 



Figure 23, Cistenides hrevicoma (887-38): tube in lateral view and 

 animal in dorsal view. 



