THORNELY HYDROIDA 149 



resemblance between this species and Thuiaria tubulifera, Marktanner-Turneretscher, 

 as described by Clarke. 1 



Locality : Kiu, low water. 



5. Sertularia rugosissima Thornely. 



Thornely. " Hydroida " in "Ceylon Pearl Oyster Fisheries," Pt. II., Suppl. 

 Kept. No. VIII., 1904, p. 118. 



Growing in quantities over a coralline. This species appears to be identical 

 with S. hupferi discovered by Broch. 2 



Locality : Dwarka. 



6. Sertularia tenuis Bale. 



Bale. Cat. Aust. Hydroid Zoophytes, 1884, p. 82. 

 Localities : Kiu ; off Beyt. 



7. Pasythea quadridentata Ellis & Sol. 



Bale. Cat. Aust. Hydroid Zoophytes, 1884, p. 112. 



There are usually four pairs of zooecia to an internode, but sometimes only 

 one or three pairs. 



Locality : Dwarka, 15-17 fathoms. 



8. Idia pristis Lamouroux. 



Bale. Cat. Aust. Hydroid Zoophytes, 1884, p. 113. 



Localities : West of Beyt Island, 3-4 fathoms ; off Dwarka, 15-17 fathoms ; 

 off Poshetra Head, 7 fathoms ; Adatra, 7 fathoms. 



A widely-distributed species recorded from Torres Strait, Brazil, and the Persian 

 Gulf. 



9. Thuiaria fenestrata Bale. 



Bale. Cat. Aust. Hydroid Zoophytes, 1884, p. 116. 



Good colonies growing on barnacles in seven fathoms of water. 



Localities : North of Poshetra, 3|-4 fathoms ; off Poshetra Head, 7 fathoms. 



10. Monostaechas fischeri Nutting (1905), variety simplex Billard. 



Billard. " Siboga Expedition," 1913, p. 16. 

 Localities : Rupan Bandar ; Kutchegad. 



1 1 . Plumularia badia Kirchenpauer. 



Kirchenpauer. Abh. ver. Hamb. VI. ; Bale. Cat. Aust. Hydroid Zoophytes, 

 1884, p. 128. 



Locality : Off Beyt. 



1 Mem. Mus. Comp, Zool. Harvard, Vol. XXXV. No. 1 ; VIII. "The Hydroids," 1907, p. 14. 



2 " Kenntnis der Meeresfauna West Africas," 1914, p. 35. 



