1923] NATUIL\L SCIENCES OF PHILADELPHIA 217 



or whole of broken sponge spicules which are placed tranvcrscly 

 to the axis of the tube. 



This species unites Pectinaria and Cistenides. 



Stations 4307, off Point Loma Lighthouse, 169-490 fathoms, 

 fine sand and green mud; 4322, off Point La Jolla, 110-199 fathoms, 

 soft green mud; 4326, same locality, 243-280 fathoms, soft green 

 mud; 4452, ofT Point Pinos Lighthouse 49-50 fathoms, green mud, 

 fine sand; 4453, same locality, 49-51 fathoms, dark green mud; 

 4457, same locality, 40-46 fathoms, dark green mud; 4464, same 

 locality, 36-51 fathoms, soft dark gray mud; 4467, off Santa Cruz 

 Lighthouse, 51-54 fathoms, soft dark-green mud; 4475, off Point 

 Pinos Lighthouse, 58-142 fathoms, soft green mud; 4485, off 

 Santa Cruz Lighthouse, 39-108 fathoms, soft green mud and sand; 

 4522, off Point Pinos Lighthouse, 130-149 fathoms, gray sand 

 and shells; 4523; same locality, 75-108 fathoms, soft dark mud; 

 4525, same locality, 222 fathoms, soft gray mud; 4526, same locality, 

 204-239 fathoms, soft gray mud; 4549, same locality, 56-57 fathoms, 

 coarse sand and shells; 4550, same locality, 50-77 fathoms, green 

 mud and rocks, 4552, same locality, 66-73 fathoms green mud 

 and rocks; 4553, same locality, 65-74 fathoms, rocks; 4557, same 

 locality, 53-54 fathoms, rocks. 



CAPITELLIDAE 

 Notomastus sp? 



Four fragments each consisting of twelve thoracic and from two 

 to eleven abdominal segments and measuring in diameter from 

 1.5 to 3.5 mm. 



Stations 4382, off S. Coronado Island, 642-666 fathoms, green 

 mud; 4415, off Santa Barbara Island, 302-638 fathoms, green mud; 

 4454, off Point Pinos Lighthouse, 65-71 fathoms, green mud; 

 4549; off Point Pinos Lighthouse, 56-57 fathoms, coarse sand and 

 shells. 



SCALIBREGMIDAE 



Scalibregma inflatum Katlike. 



A single specimen lacking the cautlal end and exceeding 3 mm. 

 in diameter appears to be quite typical in all respects. Para]iodial 

 cirri are rather shorter than usual, both cephalic and caudal para- 

 podia have dark jngment spots and the furcate setae are very short. 



Station 4548, off Point Pinos Lighthouse, 46-54 fathoms, coarse 

 sand and shells. 



