100 ALLAX HANCOCK PACIFIC EXPEDITIONS VOL. 4 



PLATE 13 



Fig. 61. Sertiilaria anccps 



Colony showing branching. 



Fig. 62. Sertiilaria d is par 



a. Portion of stem, face view. 



b. Portion of stem, back view. 



c. Cjonangium. 



Fig. 63. Thuiaria simplex 



Portion of colony showing arrangement of h\ drothecae. 



Fig. 64. .Iglaophenia praecisa 



a. Two hydrothecae on a hydrocladium. 



b. The same further enlarged. 



Fig. 65. Antennella compacta 



a. Portion of colony showing hydrothecae. 



b. Gonangium. 



Fig. (i(). Antennularia alternata 



Portion of colony showing branching, h\dr<)thecae and 

 gonangia. 



Fig. 67. Antennularia irregularis 



Portion of colony sho^ving branching and h\drothecae. 



