686 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 14 



In addition it should be stated that, similar to Crisia, there are jointed 

 rhizoids or radicles consisting of tubular kenozooecia ; the primary disc 

 is separated from the primary zoid by a joint; the primary zoid arises 

 from the top of the primary disc and not from its side ; the lower inter- 

 nodes of the colony and its branches are uniserial or biserial; and the 

 rhizoids, which are exactly like those of Crisia, often give rise to 

 branches. For these reasons I agree with Borg (1926:475-6) in placing 

 Crisulipora in the family Crisiidae. 



On the other hand, the ovicell usually resembles that of the Diaperoe- 

 ciidae where Canu and Bassler (1920:749) have placed the genus. The 

 gonozoids are more or less embedded between the autozoids and some- 

 times they are expanded and surround a few peristomes. In narrower 

 branches, however, they are simple, as those of Crisia, the only difference 

 being that they are more embedded between the neighboring tubules. 



Crisulipora occidentalis Robertson, 1910 

 Plate 72, fig. 6 



Crisulipora occidentalis Robertson, 1910:254. 

 Crisulipora occidentalis, Okada, 1917:342. 

 Crisulipora occidentalis, Marcus, 1937:21. 



The zoaria form large, stiff, often tangled masses, to a height of 30 

 mm, attached by jointed radicles; additional zoaria are often produced 

 from creeping radicles. Internodes long, separated by chitinous joints, 

 the terminal ones gently curved backward, the more proximal ones 

 shorter and straight. In the proximal internodes the zooecia number 

 from 1 to 3 or 5, but terminal ones may have 40 or more. The zooecia 

 are not symmetrically arranged as they are in Crisia, but are irregularly 

 distributed. Cross sections of fertile internodes may show as few as 4 

 or 5 zooecia, or as many as 8 to 10 at the widest part. Branching is like 

 that of Crisia, with a more or less exserted basis rami. 



The zooecial tubes are slender and elongate, the frontal surface 

 rounded in cross-section and the separating grooves quite distinct. The 

 peristomes are moderately long, gently curved forward, a little narrower 

 than the tubules, the aperture round and about 0.12 mm in diameter; 

 in the basal internodes the tubules often show a rather regular alternate 

 arrangement. 



The ovicells are elongate, narrowly wedge-shaped proximally and 

 widening gradually upward, with much variation in size and form ; and 



