264 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 4 



node, besides the supracalycine nematophores, there are usually 2 mesial 

 nematophores proximal to the hydrotheca, but none distal to it; on the 

 other, longer internodes, there are 3 nematophores proximal to the hydro- 

 theca. When the long internode is divided into 2 internodes, there are 2 

 nematophores on the athecate internode, and 1 on the thecate, proximal to 

 the hydrotheca. The number of nematophores on the cauline internodes 

 varies, most commonly there are 3 nematophores on the one side between 

 2 hydrocladia in succession. 



Gonosome. — Not observed. 



Distribution. — Station 1162-40, 11 miles south of Seal Beach, Calif., 

 82-95 fathoms; Carmel Bay, Calif., 10-40 fathoms; Ranger Bank, west 

 of Cedros Island, 78-83 fathoms ; San Jaime Bank, of? Cape San Lucas, 

 120 fathoms. 



Antennularla gracilis, new species 

 Plate 33, Fig. 32 



Trophosome. — The colony is small, both short, 2.5 cm, and slender; 

 the stem is divided into internodes that are not all of the same length; in 

 some cases, there are 2 hydrocladia to the internode, and in others, there 

 are 3, but the hydrocladia are in quite regular alternation, in the same 

 plane. The hydrocladial process is relatively long. The hydrocladium is 

 divided into internodes by noticeably oblique nodes, all of which are 

 thecate; the proximal one shorter than the others. Sometimes the long 

 internode is divided into internodes, the proximal, athecate, with 1 ne- 

 matophore, and the distal, thecate, also with 1 nematophore. There are 

 no internodal septa visible. The hydrotheca is placed some distance from 

 the distal node. The supracalycine nematophores are relatively long; there 

 is 1 mesial nematophore on the first internode and 2 on each of the others, 

 all proximal to the hydrotheca. On the hydrocladial process, there is a 

 proximal pseudonematophore, centrally placed, a normal nematophore 

 in the axil and 1 distal to the pseudonematophore. There is usually but 1 

 cauline nematophore between 2 hydrocladia on the same side, nearer the 

 proximal hydrocladium, but sometimes there is also 1 near the distal 

 hydrocladium. 



Gonosome. — Not observed. 



Distribution. — Station 1263-41, 1^^ miles north of Cedros Island, 

 45-55 fathoms ; J^ mile south of west end of Anacapa Island, 26 fathoms. 



