REPORT ON PHILIPPINE HYDROIDA 217 



throughout. The margin is square with four low teeth and a four- 

 flapped operculum. 



Gonosome. — The gonangia are small, about one and one-half times 

 the length of the hydrothecae. They grow in clusters on the 

 branches, are ovate in form with four or five very irregular annular 

 corrugations, margin round and borne on a shallow hardly evident 

 collar. These gonangia are not so regular and symmetrical as is usual 

 in this genus, perhaps on account of crowding in the mesh-work of 

 the branches. 



Localities. — Dredging station 5310, China Sea, vicinity of Hong- 

 kong, 21° 33' N., 116° 13' E.; depth, 100 fathoms. Station 5311, 

 same locality, 21° 33' N., 116° 15' E.; depth. 88 fathoms. Station 

 5312, same locality, 21° 30' K, 116° 32' E. ; depth, 140 fathoms. 



Distribution. — The type locality is Hirudostrasse, Japan, 33° 30' 

 N., 129° 18' E. ; depth, 45 fathoms. The writer has not seen any 

 further report of distribution of this remarkable species. 



SERTULARELLA PHILIPPINENSIS Hargitt 



Sertularella pJiilippinensis Hargitt, Hydroids of the Philippine Islands, 

 1924, p. 496, pi. 6, fig. 22. 



The specimens described by Hargitt agree very well with those 

 collected by the Albatross. The following points not mentioned by 

 Hargitt may be noted : 



The main stem is unbranched for about half its length and is very 

 clearly annulated or corrugated proximally, the corrugations becom- 

 ing less numerous distally until they appear in distant pairs. In 

 the branched portion of the stem there are distant irregularly spaced 

 corrugations which tend to appear just above each branch. The 

 margin of the hydrothecae often bears a thickened rim, but is without 

 reduplication. The gonangia are much as described by Hargitt, but 

 the teeth are often not nearly so prominent as figured by him, 

 although there is an occasional one that would be represented very 

 well by his drawing. 



Localities. — Dredging station 5310, China Sea, vicinity of Hong- 

 kong, 21° 33' N., 116° 13' E.; depth, 100 fathoms. Station 5311, 

 same general locality, 21° 33' N., 116° 15' E.; depth, 88-100 fathoms. 



Hargitt's localities are not designated except by station numbers, 

 neither is there any indication of the depth from which specimens 

 were taken. 



IDIA PRISTIS Lamouroux 



ldia pristis Lamouroux, Histoire des Polypiers coralligenes Flexibles, 1816, 

 p. 199. 



This well-known species is abundantly represented in the collec- 

 tion under discussion and has been described by many authors since 

 19155—27 4 



