140 ALLAN HAXCOCK PACIFIC EXPEDITIOXS VOL. 4 



Tentacular organs quite large, commonly one to each pedicel, a short 

 distance below the origin of the following pedicel. None was observed 

 on the stolon. 



Gonosome. — Gonangia appear almost sessile, attached to the hydro- 

 phore pedicels, to the internodes or to the stolon; obovate, with eight 

 or nine strongly crested, transverse rugosities. 



PScandia expansa, new species 

 Plate 20, Fig. 8 



Trophosome. — Zooids growing singly from a creeping stolon. The 

 hydrotheca does not vary much in size, just short of 1.0 mm. in length 

 and 0.3 mm. in diameter, but the length of the pedicel varies from the 

 same length as the hydrotheca to about one fourth of its length. The 

 pedicel has a definite annulation at the base, and in most cases this is 

 the only one; occasionally, there are one or two others near the middle. 

 The surface of the hydrotheca is gently corrugated on the outside, but 

 on the inside the ridges come to a sharp edge that is very evident on 

 looking in from the margin. The margin is entire but flares distinctly. 



Gonoso?ne. — Not obsei-ved. 



As there was no gonosome present it is not possible to tell whether 

 this is Scandia or Hebella. The definite diaphragm ensures it a place 

 in the Hebellidae. 



Genus EUGRYPTOLARIA, new genus 



Trophosonie. — Stem and much of the branches consist of a central 

 tube, giving rise to hydrothecae that are partly adnate, surrounded by a 

 series of more slender peripheral tubes, not bearing hydrothecae, but 

 bearing numerous nematophores. 



Gonosome. — Unknown. 



Eucryptolaria pinnata, new species 

 Plate 20, Fig. 9 



Trophosome. — Colonies up to 4 cm. in length, consisting of a central 

 axis, with numerous short branches, pinnately arranged but subopposite 

 in position. In the basal portion of the stem the hydrothecae come off 

 in two rows, nearly in the same plane and there are several peripheral 



