1923] NATURAL SCIENCES OF PHILADELPHIA 237 



arc on all except the first two or three segments, they are crochets 

 with rather strongly curved stem, prominent shoulder, constricted 

 neck, full head and crest, stout tapering beak and fully-formed 

 arched guard. On the first torus they have less expanded head and 

 crest, straighter and less tapered beak and weaker guard, which 

 arises close beneath the beak. They are also paler in color. 



A portion of tube is of fine silt and very fragile. 



Type specimen only, Station 4352, off Point Loma Lighthouse, 

 549-585 fathoms, green mud. 

 JMaldane sarsi Malmgren var. 



Numerous specimens of a small Maldane close to M. sarsi are 

 indistinguishable structurally from examples from Europe, Labra- 

 dor, Alaska and Japan but are constantly characterized by the 

 entire absence of dark-brown pigment specks which are usually 

 found on the anterior region of the typical form. This form is 

 abundant and widely distributed in the southern Californian 

 region on muddj^ bottoms and lives in thick walled mud tubes. 



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

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

 soft green mud; 4339, off Point Loma Lighthouse, 241-369 fathoms, 

 green mud; 4351, same locality, 423-488 fathoms, soft green mud; 

 4431, off Santa Rosa Island, 38-45 fathoms, green mud and coarse 

 gray sand; 4433, same locality, 243-265 fathoms, green mud 

 (upwards of 170); 4436, off San Miguel Island, 274-287 fathoms, 

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

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

 green mud; 4464, same locality, 36-51 fathoms, soft dark gray 

 mud; 4468, off Santa Cruz Lighthouse, 32-309 fathoms, fine sand; 

 4482, same locality, 43-44 fathoms, soft green mud; 4485, same 

 locality, 39-108 fathoms, soft green mud; 4510, off Point Pinos 

 Lighthouse, 91-156 fathoms, graj^ mud; 4513, same locality, 389- 

 456 fathoms, green mud; 4523, same locality, 75-108 fathoms, soft 

 dark mud; 4526, same locality, 204-239 fathoms, soft gray mud; 

 4528, same locality, 766-800 fathoms, soft gray mud. Besides 

 4433, this annelid is plentiful in the collections from stations 4431, 

 4452, 4457, 4464, 4485, 4510 and 4526. 

 Maldane (Asychis) disparidentata Mooro. 



A complete specimen is 178 mm. long and 7 mm. in diameter, of 

 twenty one segments (nineteen of which are setigerous and eighteen 

 uncinigerous) and no propygidial non-setigerous segment. While 



