304 University of California Puhlications in Zoology. [Vol.4 



resembles the variety spatlndata Smitt (72), in the possession 

 of the large spatulate avicularia, but in the Floridan species these 

 avieiilaria occur on the zooecial wall, not in place of zooecia as in 

 S. californioisis. 



The constancy of the characters here enumerated in the diag- 

 nosis leads me to regard this as a species peculiar to this coast. 

 It is found at many localities on the southern California coast be- 

 tween tide marks and has been dredged from 13 to 50 fathoms. 



73. Smittia coUifera sp. nov. 



PI. 23, figs. 72, 73. 



Zoarium incrusting, at first forming a single layered after- 

 ward, a many-layered colony, whose zooecia become piled up and 

 irregularly arranged. Zooecia ovate, alternate, the front wall of 

 those on the growing edge of the colony, hyaline, margin outlined 

 by a row of large pores, a few large pores scattered over the front 

 wall (pi. 23, fig. 72) ; in older zooecia, marginal pores larger, sep- 

 arated by thick calcareous ribs, rb. Orifice orbicular, at an early 

 stage acquiring a distinct denticle, d., on the lower margin ; later, 

 by the growth of a peristome, per., a sinus is formed in front 

 within which the median denticle is always visible ; minute lat- 

 eral denticles also present; on the upper margin of the orifice 

 two long spines, below the orifice on each side a large, blunt, pro- 

 tuberance, hi. pro., frequently a third appearing' between these in 

 the median line. When a blunt protuberance does not develop 

 below the middle of the orifice, an avicularium usually found in 

 that situation, with pointed mandible directed upward. If a pro- 

 tuberance does appear, then the avicularium may appear lower 

 on the front Avail a little to one side or the other. Sometimes a 

 fourth or even a fifth blunt protuberance present on the front 

 wall and the avicularium may be lacking (fig. 73). Ooecia, oe., of 

 moderate size, broader than high and somewhat iiattened; front 

 wall possessing a few large pores, and adorned with several pro- 

 tuberances similar to those found on the front wall of the zooecia. 



The remarkable calcareous thickenings which are liberally dis- 

 tributed over the surface of the zooecia form a very characteristic 



