258 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 4 



at the base of the leaves. There is 1 hydrotheca between the corbula anJ 

 the stem. 



Distribution. — Station 1008-39, off San Benito Islands, 51-52 fath- 

 oms; 1 mile north of west end of Anacapa Island, 45-46 fathoms; 10^ 

 miles west of Point Dume, Calif., 47-48 fathoms; 1 mile east of Santa 

 Barbara Island, 20-40 fathoms; off San Benito Islands, 51-52 fathoms; 

 5y2 miles south of San Benito Islands, 71-72 and 66-81 fathoms. 



Aglaophenia late-septata, new species 

 Plate 32, Fig. 28 



Trophosome. — Colony relatively small, 3.5 cm, is rigid and prim; as 

 the hydrocladia are quite uniform in length, 4 mm, except for a small 

 portion proximally and distally, where a rapid tapering takes place; al- 

 though the stem is stiff, it is not very short; the nodes are not distinct. 

 The hydrocladia are given off in regular alternation; they are fronto- 

 laterally placed, but as they turn outward almost at once, the angle be- 

 tween those on the two sides is a large one. The hydrocladial internodes 

 are short, the nodes quite well marked ; two septa are indicated. The 

 hydrotheca projects outward towards the margin; it is relatively stout; 

 the intrathecal septum reaches all the way across the hydrotheca; it is 

 straight and is especially thick; it is placed low in the hydrotheca. The 

 margin is irregular; in some cases, there is evidence of 11 teeth present, 

 but in general the irregularities are scarcely prominent enough to be 

 called teeth ; the median tooth is slightly more prominent in most cases, 

 and is sharper than any of the others. The supracalycine nematophore is 

 large, pear-shaped, reaching above the margin of the hydrotheca; the 

 mesial nematophore is not as long as the face of the hydrotheca, the free 

 portion projecting well outward. The 3 cauline nematophores on each 

 internode are large and tend to be triangular rather than tubular. 



Gonosome. — The corbula is cylindrical, more than 3 mm in length, 

 with 11 or 12 pairs of leaves. There is no definite spur at the base of the 

 leaf. There are 2 hydrothecae between the corbula and the stem. 



Distribution. — Station 1121-40, off San Nicolas Island, Calif., 40-48 

 fathoms; 3^ miles east of South Point, Santa Rosa Island, 35-38 fath- 

 oms; ^ mile south of Gull Island, Santa Cruz Island, 34-41 fathoms; 

 Y2 mile east of Abalone Point, Laguna Beach, 44-46 fathoms; off San 

 Nicolas Island, 28-31 fathoms; 11 miles NW of buoy, Cortes Bank, 45- 

 46 fathoms ; 9^ miles NW of buoy, Cortes Bank, 50 fathoms ; 4J^ miles 

 WNW of buoy, Cortes Bank, 90-110 fathoms; Tanner Bank, 25-28 and 

 37-40 fathoms. 



