46 DESCRIPTIVE CATALOGUE OF THE 



66. Genus ARACHNOPORA. Tenison- Woods. 

 The colony spreading like a small thin web over corals. 



228. Arachnopora argentea. Tenison-Woods. (95) 614, (131) 8. 

 Australia. 



XVI. FaniiUa STYLISTERID^E. 



Moseley. 



Alimentary zooids, with from four to twelve tentacles. Massive hydrosome 

 containing tubes which possess pseudosepta, formed by the regular position of 

 the tentacular zooids. Dactylozooids devoid of tentacles, Gonanzia con- 

 tained in ambulfe. 



67. Genus DISTICHOPORA. De Lamarck. 



Pores sporadic ; dactylopores of one kind only. Pores simple, in a triple 

 linear row at the lateral edges of the branches of the flabellum, rarely on its 

 faces. 



229. Distichopora violacea. Pallas. (95) 614, (113) (133) 61. 

 North coast of Axistralia. 



230. Distichopora rosea. Saville Kent. (69) 281, (95) 614, (133). 

 East coast of Australia. 



231. Distichopora coccinea. Gray. (95) 615, (130). 

 North coast of Australia. 



232. Distichopora gracilis. Dana. (27)151, (95) 615, (133). 

 North coast of Australia. 



233. Distichopora livida. Tenison-Woods. (95) 615, (133). 

 North coast of Australia. 



68. Genus STYLASTER. Gray. 



Pores occurring in regular cyclo-systenis. Both kinds of pores with styles. 

 Corallum increasing by regular alternate gemmation of the cyclo-systems from 

 one another. Gasterozooids with eight tentacles. 



234. Stylaster gracilis. Milne Edwards et Haime. (32) 98, (33) (95) 



615. 



Australia. 



235. Stylaster sanguinens. Valenciennes. (32) 96, (33) (95) 615. 

 Australia. New Zealand. 



236. Stylaster gemmascens. Milne Edwards et Haime. (33) 130, (95) 



615. 



Indian Ocean. 



