262 1'nivi rsity of California Publications in Zoology. I Vol. 6 



inflation of the surface, beginning on the eancelli {cen. run.) of 

 the central portion and extending into the various depressed 

 portions between the connate series of zooecia. Oosciostome 

 situated to one side of the center. Oceciopon {oep.) circular or 

 compressed, smaller than the aperture of a zooecium. 



This species is reported by d'Orbigny from Lower California, 

 and by Conrad from San Diego and San Pedro, California. 

 Neither of these writers gives more than a meagre description of 

 the species, and this identification is based on the description 

 and plate of Busk ( '75) who reports it from the neighborhood of 

 San Diego and San Pedro, the region in which our specimens 

 were obtained. L. californica might, perhaps, be identified on 

 its habit of growth, since it is the only Licht nopora known from 

 this coast which possesses zoceeia in connatt radiating series. 



L. californica has been obtained in rather small quantity growing on 

 eel grass dredged near Ballast Point, San Diego Bay, in from 5 to 8 

 fathoms. 



103. Lichenopora radiata (Audouin) Hincks. 



PI. 24, fig. 46, 47. 



Meldbesia radiata Audouin, lSL'ii. t. 1. p. 235, pi. 6, fig. 3. 

 / n ir, n, <i nnii, 1 1, i. d'Orbigny, 1851, p. 971. 

 Viscoporella radiata, Busk, 1 s7o. p. 32, pi. 34. fig. 3. 

 Lichenopora radiata, Hincks. 1880, p. 47(i. pi. (is, figs. 9, 10. 



Zoarium circular, adnate, forming conspicuous white patches 



on kelp, varying in size from six to eight millimeters in diameter 

 (pi. 24, fig. 47). Zoceeia radiating from the center in single 

 connate rows. In older colonies the radiating rows of zooecia 

 alternately longer and shorter; raised slightly at the distal end, 

 the upper margin of each zooecium frequently terminating in a 

 sing!.', or bifid process. Cancelli numerous, (fig. 4b can.) 

 Ocecium (oe.) large, occupying the central space as well as the 



sp: s between the rows of zooecia. Oceciostome (oest.) circular, 



about the size of a zooecial aperture; oceciopon {oep.) large. 

 circular, sometimes somewhat compressed, but always larger in 

 diameter than a zoreeial aperture. 



According to Hincks ( '80) L. radiata may have as many as 



