312 VniversHy of California Publications in Zoology. [Vol.4 



The subsp. B. pacifca eatalinensis has been obtained in one lo- 

 cality only, dredged on the west coast of the island of Santa Cata- 

 lina in 45 fathoms. 



Celleporidae Hincks. 



CelleporidcB (part) Johnston, 1847. 

 Escharidce (part) d'Orbigny, 1850-52. 

 Celleporidas, Hincks, 1880. 



Zoodcia calcareous, more or less vertical to the plane or axis 

 of the colony, irregularly heaped together, with a terminal ori- 

 fice. 



Cellepora (part) Fabricius. 



Cellepora Fabricius, 1780. 

 Millepora, Ellis and Solander, 1786. 

 Cellepora (part) Johnston, 1847. 

 Cellepora (part) Lamarck, 1856. 

 , Cellepora, Hincks, 1880. 



Zoarium incrnsting, often composed of many layers of zooecia, 

 or erect and ramose. Zooecia urceolate, erect, or suberect, heaped 

 together and irregularly disposed; orifice terminal with one or 

 more ascending rostra in connection with it, bearing avicularia. 



81. Cellepora incrassata Lamarck. 



PI. 24, fig. 87, 88. 



Cellepora incrassata Lamarck, 1856, ed. 2, vol. 2, p. 256. 

 Cellepora incrassata, Smitt, 1867, p. 33, figs. 212-216. 

 Cellepora incrassata, Hincks, 1877, vol. 19, p. 105. 

 Cellepora incrassata, Eobertson, 1900, vol. 2, p. 327. 



Zoarium sometimes forming coarse, rounded nodules incrnst- 

 ing seaweed, sometimes rising into thick palmate masses more or 

 less branching. Zoacia large, rotund, decumbent in young col- 

 onies becoming erect in older portions of the colony and piled one 

 on top of the other; front wall soon becoming heavily calcified 

 and punctured with large pores (pi. 24, fig. 87). Primary orifice, 

 pri. or., rounded on the upper margin with a well pronounced 

 sinus on the lower margin; secondary orifice (fig. 'SS, sec. or.) 

 orbicular; on each side an avicularium somewhat elevated, the two 



