THORNELY— MARINE POLYZOA OF THE INDIAN OCEAN 139 



SYSTEMATIC LIST. 



Cheilostomata. 



1. jEtea recta, Hincks, Ann. Mag. Nat. Hist., ser. 3, ix, 1862, p. 25. 

 Cargados, 28 fath. ; Amirante, 35 fath. 



2. Synnotum aviculare (Pieper). 



Gemellaria avicularis Pieper, Jahresbericht Westfalischen Provincialvereins, ix ; 

 Hincks, Ann. Mag. Nat. Hist., sei'. 5, xvii, p. 257. 



Amirante, 29 fath. 



3. Catenaria lafontii (Aud. and Sav.), Descrip. de I'Egypte, Hist. Nat., i, p. 242. 

 Cargados. 



4. Catenaria otophora, Kirkpatrick, Ann. Mag. Nat. Hist., ser. 6, v, 1890, p. 17. 

 Salomon . 



5. Vitaticella crystallina (Wyville Thomson). 



Catenicella crystallina, Wyv. Th., Dub. Nat. Hist. Rev., April 1858, p. 7 ; MacG., 

 Prod. Zool. Vict. Dec. iii, p. 25. 

 One small broken piece only. 

 Amirante, 23 fath. 



6. Vitaticella buskii (Wyville Thomson). 



Catenicella buskii, Wyv. Th., Dub. Nat. Hist. Rev., p. 140, April 1858; MacG., 

 Prod. Zool. Vict. Dec. iii, p. 24. 



There is only one fragment of this delicate species. The vittse reach the full length 

 of the zoecium, the two lateral processes, bearing avicularia, are small and of even height, 

 the surface is finely punctured in front and the orifice has a slightly projecting rounded 

 lower lip. Ooecia are absent. 



Amirante, 23 fath. 



7. Scrupocellaria scrwpea. Busk, var. dongolensis, Waters, Journ. Linn. Soc. 

 London, Zool., xxxi, 1909, p. 134. 



Amirante, 34 fath. 



8. Scrupocella7'ia pilosa, Busk, Report Challenger Exp., x, pt. xxx, p. 24. 



The scutum of these specimens is not so fully developed as in Biisk's figure, PI. XI, 

 fig. 7, but is of the same form with the lamina more developed above than below the 

 peduncle. One of the five or six spines, usually the outermost, is thicker than the rest, 

 the flagellum of the vibraculum is of considerable length, the lateral avicularia are small, 

 radical fibres are toothed and spring from the side of the vibraculum. 



Cargados, 28 fath. ; Saya de Malha, 125 fath. ; fragmentary pieces only. 



9. Scrupocellaria ohtecta, Haswell, Proc. Linn. Soc. New South Wales, v, pt. i, 

 p. 37. 



18—2 



