NO. 3 OSBURN : EASTERN PACIFIC RRYOZOA — CYCLOSTOMATA 665 



Borg, 1926:303 and 382, gives a complete description of the genotype, 

 F. ramosa, including the first information about the ovicell, which had 

 not previously been noticed, no doubt for the reason that it is but little 

 differentiated from the zooecial tubules. It is very elongate and slender, 

 slightly expanded on the side of a fascicle, the aperture terminal and 

 directed forward. 



Borg is quite justified in removing this genus from the Frondiporidae, 

 as the position and nature of the ovicells are very different. However 

 there is no justification for Borg's resurrection of d'Orbigny's "Family 

 Fascigeridae," since there appears to be no genus Fascigera, and the pro- 

 ancestrula and early development, which were hitherto unknown, are 

 similar to those of the Tubuliporidae. 



Fasciculipora pacifica new species 

 Plate 70, figs. 1, 2, 3, and 4 



The zoarium is fungiform from a narrow base, the largest colony in 

 my possession (somewhat broken) measures about 25 mm in height by 

 45 mm in the longest diameter, and the longest fascicles are 30 mm. 

 The base, broken away, is evidently small. The primary branches are 

 comparatively narrow at the base and gradually enlarge, either branch- 

 ing or becoming flabellate or folded into contorted fascicles which fre- 

 quently coalesce at their tips or are bridged by small flabellate horizontal 

 branches consisting of a few zoids. The surface of the adult colony 

 resembles the meandering contortions of the human cerebrum. 



The tubules are excessively elongate, 0.30 to sometimes 0.40 mm in 

 diameter, in cross-section compressed and hexagonal, on the surface of 

 the fascicles rounded and more or less indicated by separating grooves. 

 At the tops of the fascicles the tubes do not project, but on the sides the 

 occasional tubes which appear to be left behind in the elongation of the 

 branch usually show a definite short peristome which is more or less 

 erected and with a round aperture. The walls of the tubules are thickly 

 perforated by small pores, but on the bases of the older fascia these are 

 obscured by a secondary thickening which is more or less ribbed trans- 

 versely. 



The ovicells are little modified and resemble the ordinary tubules so 

 much that they are easily overlooked. As they emerge on the lateral 

 surface of a fascia they take their place among the normal tubules and 

 are only slightly larger. They continue upward on a level with the 

 tubules, becoming gradually wider until they are twice or three times 

 as wide and with a nearly flat frontal surface. The ooeciostome is a 



