420 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 14 



to see. The peristome is thin, a little elevated all around the aperture, 

 more so on the proximal border where two longer points enclose a 

 rounded secondary sinus. Three to five oral spines are present in young 

 stages but soon disappear. 



Small rounded or elliptical avicularia occur in various positions on 

 the front and occasionally on one or both sides of the peristome opposite 

 the notch, the mandible directed upward on the side of the peristome. 

 On one colony there is a single long-pointed frontal avicularium, the 

 mandible directed laterally. 



The ovicell is small, about 0.18 mm wide including the secondary 

 border, low and bordered by the pleurocyst of the succeeding zooecium, 

 leaving a rounded frontal area which is finely and regularly porous; 

 the peristome is connected with the sides of the ovicell and in complete 

 calcification forms a low collar around the orifice. 



Dedicated to the late Dr. C. McLean Fraser of the University of 

 British Columbia. 



Type, AHF no. 89. 



Type locality, Station 136-34, Sulphur Bay, Clarion Island, west 

 of Mexico, 18°20'05"N, 114°44'40"W, 32 fathoms. Taken also at 

 Station 23-33, off La Plata Island, Ecuador, 10 fathoms; 155-34, 

 Tagus Cove, Albemarle Island, Galapagos, 50 to 60 fathoms, and 

 224, Benito Islands, off Lower California. As the colonies are very 

 small and inconspicuous, it may be much more common than the above 

 records indicate. 



Parasmittina tubulata new species 

 Plate 49, figs. 1-4 



Zoarium encrusting, loosely attached, the surface very rough because 

 of the erect tubular peristomes. Zooecia irregularly ovate or quadrate, 

 distinct, large but varying much in size (length 0.70 to 1.00 mm, width 

 0.40 to 0.60 mm). The front is slightly ventricose, smooth or with 

 small granules ; the thin pleurocyst is perforated by a series of small 

 areolar pores and often by a few additional ones. The primary aperture 

 is rounded, 0.16 to 1.18 mm wide, with a moderately long and narrow 

 lyrula (one-fourth as wide as the aperture). Spines wanting. The 

 peristome is extraordinarily high (as much as 0.50 mm), completely 

 surrounding the aperture and with a conspicuous U-shaped or slit-like 

 secondary sinus in the proximal tip; in younger stages the border is 

 smooth, but in complete calcification the rim of the peristome expands 

 slightly and its distal border bears 3 or 4 stout pointed processes; in 



