THORNELY— HYDROIDA 149 



resemblance between this species and Thuiaria tubuUfera, Marktanner-Turneretschei; 

 as described by Clarke.^ 



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.^ 



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 flscheri Nutting (1905), variety simplex BHlard. 

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



Localities :— Kupan Bandat ; Kutchegad. 



11. Plumularia badia Kirchenpauer. 



Kirchenpauer.— ^6A. ver. Hamb. VI. ; Bale.— Cat. Aust. Hydroid Zoophytes, 



1884, p. 128. 



Locality : — Off Beyt. 



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



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



