i 910 ] Robertson: Cyclostomatous Bryozoa. -!ti:J 



three apertures in one ovicell, while according to the observations 

 of Hariner < '96) we should not expect to find more than one 

 oceciopore in the ocecium of this genus. In my study of the 

 specimens of L. radiate it has often been found exl remelj difficult 

 to decide among the numerous and variously shaped openings 

 mi the surface of a colony whether or not there may be more 

 than one oceciopore, and if not, which one is the oceciopore. In 

 most cases, however, it" examined very closely with a Zeiss 

 binocular, the true oceciopore could be detected, and other 

 apparent openings of the ovicell could be referred to thin places 

 in the root' of the ovicell, or to the apertures of zocecia. The 

 drawing (fig. Ill) represents a young colony, one in which no 

 doulit can lie entertained as to its possession of a single ooecial 

 aperture. This always occurs, as far as I can judge, near tin- 

 outer edge of the central area of the colony near the base of a 

 zocecium. I have never been convinced that what may have 



resembled an oceciopor icurring in the radii between the series 



of zocecia, or toward the outer edge of the colony, was really one. 



L. radiata is found rather abundantly on the sea weed near shore. It 

 occurs apparently only en the southern shores, having been obtained at 

 San Diego both on the fronds and the holdfasts of kelp, and dredged 

 in depths rallying from 17 to 32 fathoms. Obtained also at Avahm, Santa 

 Catalina Island. 



104. Lichenopora verrucaria (Fabricius) Hincks. 



PI. 25, fig. 50. 



tMadrepora verrucaria Linnaeus, 1758, ed. 10, p. "93. 



Madrepora verrucaria, Fabricius, L780, p. 430. 



Discoporella verrucaria, Smitt, 1866, p. 405, pi. X, figs. 6-8; pi. XI, 



figs. t-li. 

 Discoporella verrucaria, Busk. 1875, p, 31, pi. 28, figs. 2, 3. 

 Lichenopora verrucaria, Hineks, 1880, p. 476, pi. lxiv, figs. 4, 5. 



Zoarium subcircular, very convex, at times subclinical (pi. 25, 



fig. 50). Zocecia stout, slightly raised, disposed 1 v or less 



regularly in radiating lines, not connate; zooecial aperture 

 obliquely elliptical, the margin often prolonged into a single, or 

 double process. Oacium (oe.) an inflation of the surface of tin- 

 disk, occupying all of the central portion of the colony and 



