1902.] NATURAL SCIENCES OF PHILADELPHIA. 275 



together with biyozoaus, tunicates and hydroids are coufiued 

 chiefly to one side, it is probable that tiiey are fixed to the bottom, 

 resting on one of the flat surfaces. The material of which they 

 are composed diffei-s with the character of the bottom. Those from 

 Olridir Bay are uniformly formed of coarse grains of red, black, 

 yellow and colorless sand, with here and there a small lamellibranch 

 shell or a fragment of a larger one. The Granville Bay examples, 

 on the other hand, are composed of flattened pieces of black or 

 occasionally gray shale, with numerous large pieces or even entire 

 shells, bits of sea urchin tests, etc. Many of the bits of shell are 

 very thin and translucent (like Anoinia), permitting the form of 

 the worm to be distinctly seen. In many cases the fragments of 

 shale are as much as 15 mm. in diameter, and the pieces of shell 

 are still larger. 



Granville Bay, O. 39, 30-40 fath., and O. 40, 20-30 fath. ,- 

 (31ridir Bay, O. 49, 15-20 fath. 



Scalibregma inflatum var. corethura Mich. 



Whale Sound, O. 41, surface. 

 Flabelligera affinis Sars. 



Cape York, O. 34, 10 fath. • 

 Flabelligera infundibularum Johnsou. 



This species, recently described by H. P. Johnson from the Puget 

 Sound region, is represented by one specimen which differs slightly 

 from the Pacific coast examples. The capillary sette have a greater 

 number of cross nodes, the infundibular setse appear to be some- 

 what shorter, and the stalked sense organs have a different form, 

 which, however, is probably merely the result of a different state 

 of preservation. 



McCormick Bay, Dr. Sharp. 



Axiothea catenata Malmg. 



Barden Bay, O. 45, 10-40 fath. 

 Cistenides granulata (Liun.) Malmg. 



Godhavn Harbor, 0. 2, 8 fath., and O. 3, beach; Sarkak, O. 

 57, 9 fath. 

 Cistenides hyperborea Malmg. 



Banlen Bav, O. 45, 10-40 fath. 



