12 ALLAN HANCOCK ATLANTIC EXPEDITION REPORT 



The first of these records extend the range westward from the Dutch 

 West Indies, the previous farthest west in this latitude. 



Genus THUIARIA 

 Thuiaria crisioides (Lamouroux) 



Dynamena crisioides Lamouroux, Descr. Polyp. Flex., 1824, p. 613. 

 Thuiaria crisioides Fraser, Atlantic Hyd., 1944, p. 296. 



Distribution. — Caledonia Bay, shore; 2 miles off Bahia Honda, 9 

 fathoms. 



These locations are not far from the records in the Dutch West Indies 

 but they do help to connect those up with the numerous records in the 

 Eastern Pacific. 



Family Plumularidae 

 Genus ANTENNELLA 



Antennella gracilis Allman 



Antennella gracilis Allman, Gulf Stream Hyd., 1877, p. 38. 



Fraser, Atlantic Hyd., 1944, p. 315. 



Distribution. — 8 miles southwest of San Nicolaas Bay, Aruba Island, 

 23-24 fathoms. 



This location is somewhat to the westward of the nearest record, of? 

 Barbados, and hence forms a link in the route to the various locations in 

 the Eastern Pacific. 



Genus ANTENNOPSIS 

 Antennopsis sinuosa, new species 

 Plate 3, Fig. 6 

 Trophoso?ne. — Colony, 8 cm, with a sinuous, strongly fascicled, main 

 stem, several fascicled, primary branches, varying much in length, and 

 numerous secondary branches, simple, unless in the proximal portion. As 

 the primaiy branches come off the sinuosities of the main stem sometimes 

 there is an appearance of dichotomy; a smaller second branch may be 

 given off at the angle. The ultimate branches are divided into regular 

 internodes by nodes which are not always very distinct. The hydro- 

 cladia are commonly regularly alternate, but in some places, besides the 

 regular series, other hydrocladia are scattered irregularly, occasionally 

 making a verticil of 4, but more often with no definite position in relation 

 to the others. Each hydrocladium is supported by a cauline process of 

 medium length, in the case of the regular hydrocladia, near the distal 

 node. In the hydrocladia, thecate and shorter athecate internodes alter- 



