60 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 4 



axil of the process; on the process, there is one low one-chambered 

 nematophore and one two-chambered, on the proximal hydrocladial 

 internode; one below the hydrotheca and a pair immediately above it; 

 other internodes usually have two proximal nematophores. 



Gonosome. — Not observed. 



Distribution. — South of Clarion Island, 55 fathoms. 



Genus GLADOCARPUS 



Cladocarpus tortus, new species 

 Plate 14, Fig. 69 



Trophosome. — Stem simple, unbranched, 30 mm. high. A twist in 

 the stem just proximal to the first hydrocladium shows three distinct 

 nodes; otherwise there are no nodes indicated on the stem. Hydrocladia 

 regularly alternate, but not quite in the same plane, the longest 6 mm., 

 each arising from a distinct process of the stem; divided into regular 

 internodes, each of which is almost entirely occupied by a hydrotheca. 

 Hydrotheca much deeper than wide, the margin with a median, small, 

 sharp tooth, lateral to which there are four shallow, rounded teeth, the 

 last one sometimes indented. The supracalycine nematophores do not 

 reach beyond the margin of the hydrotheca; the mesial nematophore 

 projects outward, partly adherent to the hydrotheca, jointed near the 

 base. A septal ridge is present at the base of the supracaljxine nemato- 

 phore, one at the base of the hydrotheca and three between them, but 

 all of them are faint and short. There are two broad nematophores m 

 the axil of the hydrocladial process, one on its face and one a short 

 distance below this in the main stem. On the portion of the stem proxi- 

 mal to the first hydrocladium, there is a row of nematophores, rather 

 close together distally, but more and more distant toward the base. 



Gonosome. — Not obsei'ved. 



Distribution. — South of La Plata Island, 45-55 fathoms. 



Genus DIPLOGHEILUS 

 Diplocheilus allmani Torrey 



Diplocheilus allmani Torrey, Hyd. of San Diego, 1904, p. 36. 



Fraser, West Coast Hyd., 1911, p. 81. 



Distribution. — Santa Maria Bay, low tide; off Thurloe Point, 8-10 

 fathoms; South Bay, Cerros Island, 10-15 fathoms. 



