NO. 3 OSBURN : EASTERN PACIFIC BRYOZOA CYCLOSTOMATA 659 



appears to be congeneric ; described below as Bathysoecia hastingsae new 

 species. The status of Tiibulipora lobulata Hassall and T. lobulata 

 Hincks is also discussed under that species. 



Bathysoecia bassleri new species 

 Plate 69, figs, 4, 5, and 6 



Zoarium encrusting on shells, irregularly rounded or with short lobes ; 

 a narrow basal lamina; surface reticulated. The zooecial tubules are 

 completely connate to their tips, nearly vertical, so closely set that their 

 exposed ends occupy all of the frontal surface; more or less hexagonal, 

 separated by strong ridges and their apertures widely funnel-shaped over 

 most of the zoarium. The tubules arise from the basal lamina, at first 

 prone but immediately curving upward to become more or less erect. 

 They are completely connate from their origin and are so closely united 

 that no line of separation is visible. As they approach maturity the distal 

 exposed ends become partly closed by a funnel-shaped thickening which 

 leaves a large rounded aperture at the bottom of the funnel. Most of 

 the tubules remain in this condition, but in older areas some of them 

 develop short, cylindrical peristomes inside of the funnel and may pro- 

 ject slightly above it. The exposed ends of the zooecia, from ridge to 

 ridge, measure 0.20 to 0.35 mm across, the apertures 0.18 to 0.20 mm, 

 and the cylindrical peristomes of older zooecia 0.13 to 0.15 mm in 

 diameter. 



The ovicell is irregularly arcuate in form and so deeply submerged 

 between the high walls formed by the connate tubules that it has none 

 of the usual appearance of an ovicell. The frontal layer is thin in com- 

 parison with the wall of the tubules, and is perforated by minute pores 

 (the only pores visible on the whole zoarium). The ooeciostome is located 

 at the distal border in the middle of the arc, compressed and nearly as 

 high as the tubules, connate with a tubule or often between two tubules; 

 the ooeciostome slit-like, its long diameter paralled to the zoarial radius, 

 the pore 0.15 to 0.20 mm long by about 0.06 mm wide. 



The species is dedicated to Dr. Ray S. Bassler, whose extensive studies 

 of the Bryozoa have been of great service to the author. 



Type, U. S. Nat. Mus. no. 11050; paratype, AHF no. 116. 



Type Locality, Lenard Harbor, Alaska, a branch of Cold Bay, Alaska 

 Crab Investigation Sta. 60-40, 55°10'N, 163°30'W, at 25 fms, 4 colonies 

 on shells. Also from Hein Bank, near Friday Harbor, Puget Sound, 

 Washington, one colony, Dr. J. L. Mohr, collector. 



