212 BULLETIN 100, UNITED STATES NATIONAL MUSEUM 



Gonosome. — Not known, but the branch structures referred to 

 above probably indicate that there is a coppinia mass similar to 

 that of Lictorella eervicornis Nutting. 13 



Locality. — Dredging station 5635, Pitt Passage at Gomomo Island. 

 1° 53' 30" S., 127° 39' E.; depth, 400 fathoms. 



Distribution. — The type was taken off Florida reef .from a depth 

 of 152 fathoms. This species is nearest Lictorella eervicornis Nut- 

 ting, from which it differs in the curvature of the hydrothecae and 

 their lateral position. It differs from Zygophylax curvitheca 

 Stechow in having the hydrothecae bent but not twisted and in the 

 much longer pedicels. 



ZYGOPHYLAX CURVITHECA Stechow 



Plate 41, fig. 3 



Zygophylax ciwvitheca Stechow, Neue Genera thecates Hydroiden und 

 Neue Species von Thecaten aus Japan. December 2. 1913, p. 139. 



This handsome species was originally described by Stechow, who 

 found it in a collection from Japan. His specimens did not show the 

 gonosome and it is fortunate that the Albatross material contains 

 specimens which show this feature in a very satisfactory manner. 

 The Philippine specimen is described as follows: 



Trophosome. — Colony fiabellate in form. 314 cm. in height, and 

 with a spread of 2 cm. Stem fascicled, branches simple and subalter- 

 riate. Branches are almost at right angles to the stem and not di- 

 vided into internodes. Hydrothecae, one on the main stem just above 

 the branch origins and another almost midway between adjacent 

 branches, sessile. Those on the branches are strictly alternate, almost 

 sessile, with basal chambers blending insensibly into the very short 

 pedicel, if such it may be called. Hydrothecae tubular, the distal 

 portions being bent toward the front of the stem and branches re- 

 sembling the figure given bj r Allman for his iAtfo'ea convallaria from 

 the Gulf Stream, 14 except that Allman 's species had distinct pedicels 

 more than half the length of the hydrothecae. The hydrothecal mar- 

 gins are often delicately rimmed. There is usually a nematophore 

 near the base of each hydrotheca and others scattered along the 

 branches and tubes of the fascicled stem. These are minute and 

 tubular in form on the stem, but on the branches with enlarged distal 

 ends, much like those in the Plumularidae. Many of the nemato- 

 phores are broken off and those on the stem are shorter and less 

 numerous than reported b}^ Stechow. 



Gonosome. — Gonangia aggregated into a coppinia mass, as con- 

 jectured by StechoAv, on the proximal part of the main stem. They 



" Hydroids of the Hawaiian Islands, 1905, pi. 10, fig. 8. 



14 Memoirs of the Museum of Comparative Zoology, vol. 5, No. 2, 1877, pi. 9. 



