292 University of California Publications in Zoology. [Vol. 4 



ular with pores scattered irregularly over it (pi. 20, fig. 49) ; 

 often a row of pores on each side near the margin. Orifice arched 

 above, with a wide shallow sinus on the lower margin ; lateral den- 

 ticles well developed; peristome thin, slightly elevated. On one 

 side of each zooecium, a little below^ the orifice, an elevated avicul- 

 arium with much elongated and acutely pointed mandible directed 

 dow^nward. Ooecium small, slightly higher than wide, surface 

 granular, punctate, oral arch shallow. 



This species is described and reported by Hincks from Queen 

 Charlotte Islands. It is fairly abundant in the California fauna, 

 being obtained at several points near San Pedro and Catalina 

 Islands. 



62. Schizoporella oligopus sp. nov. 



PI. 20, figs. 50, 51, 52. 



Zoarium having a delicate, hyaline appearance and forming a 

 single layered incrustation attached to the substratum by means 

 of numerous calcareous prolongations resembling tube feet (pi. 

 20, fig. 50, tu. ft.), extending from the under side. Zooecia ovate, 

 or of irregular shape, having a definite thickened margin inside of 

 which is a row of large pores (fig. 51) ; front wall convex, rising 

 into a distinct umbo, nm., below the orifice, and thickly covered 

 with papilla? instead of the usual punctures. Orifice rounded 

 above, with a shallow sinus on the lower margin. To one side of 

 the orifice, an avicularium on a high mound, the lower edge of 

 which has a row of large pores similar to those inside the zocecial 

 margin ; its surface covered with minute papilla similar to those 

 on the zoa?cial wall ; mandible directed outward, the outer edge 

 of the mound rising in a point and curving over the tip of the 

 mandible; avicularium not present on every zooecium. Oopcium 

 (fig. 52, oe.) large, a thin calcareous rim on the oral margin; the 

 margin by which it unites with the zooecium above crenate ; cren- 

 ations thickly covered with papilla^ ; convex surface of ocecium 

 thickly punctured, but showing minute papilhi3 between the punc- 

 tures. The under surface (fig. 50) of each zooecium slightly con- 

 vex, smooth, giving off a number of tubular prolongations arising 

 either on the margin of a zooecium or from any portion of the 



