306 University of California Publicatious in Zoology. [Vol.4 



75. Smittia reticulata (Maegillivra.y) Hincks. 



PI. 23, fig. 75, 76. 



Lepralia reticidata Macgillivray, 1842, vol. 9, p. 467. 

 Lepralia reticuJaia, Johnston, 1847, p. 317, pi. 4, fig. 10. 

 Lepralia reticulata, Busk, 1854, p. 66, pi. 90, fig. 1; pi. 93, figs. 1-2; 



pi. 102, fig. 1. 

 Smittia reticulata, Hineks, 1880, p. 346, pi. 48, fig. 1-5. 



Zoarinm incrusting. Zoopcia ovate-elongate, alternate, strong- 

 ly areolated round the margins, the calcareous lines separating 

 the areola? forming rib-like lines extending toward the center of 

 the front wall; front wall granular, somewhat thickened (pi. 23, 

 fig. 75). Primary orifice round, secondary orifice formed by a 

 thin, high peristome channelled in front inclosing a broad median 

 tooth ; on each side a smaller triangular tooth ; four long delicate 

 spines on the upper margin of the orifice, very conspicuous in the 

 young zoceeia (fig. 76) ; just beloAv the sinus and slightly elevated, 

 a small rounded aviculariuni. Ooecia globose, prominent, ad- 

 herent to the wall of the upper zooecium by a strongly calcified 

 rim; wall punctured by a number of pores. 



The rounded frontal avicularia relate this species to S. lands- 

 horovi; its other characters, the reticulated, granular wall, the 

 large ooecium, and the spines on the upper margin of the orifice 

 seem to relate it more closely wath the typical S. reticulata. 

 Hincks ( '80) says that S. landshorovi may have a highly calcified 

 state in which the frontal pores disappear and the marginal 

 pores become more prominent, in which case it resembles S. retic- 

 ulata in general appearance. The sculpturing of the w^all in our 

 specimens is not due, however, to age since young zooecia (fig. 76) 

 show it quite as distinctly as older ones. With age the middle 

 portion of the wall, which in youth is thin and hyaline, becomes 

 thicker and more opaque but non-punctate. 



Smittia reticulata was found at La Jolla inerusting a holdfast 

 of kelp, and was dredged in ten fathoms off Coronados Islands. 



Phylactella Hincks. 



PhylactcUa Hincks, 1879, vol. 3, p. 161. 

 Zoarium. inerusting. Zoa>cia with primary orifice more or 

 less semicircular, lower margin usually dentate, peristome much 

 elevated, rounded in front, entire. No avicularia. 



