660 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 14 



Bathysoecia hastingsae new species 



Plate 69, fig. 7 



Tubulipora (Tubularia by error) lobulata, Osburn, 1933:16. 

 ? Tubulipora lobulata, Whiteaves, 1874:215; 1901:111. 



The zoarium is irregularly fan-shaped or lobed, completely adnate on 

 stones and shells ; thick, especially so near the middle, and sloping down- 

 ward to a narrow basal lamina. The zooecial walls are heavily calcified, 

 the tubules thick and the only exposed areas (near the ancestrula) trans- 

 versely ribbed. There is no evidence of pores except slightly in the pri- 

 mary zooecial area. The peristomes are moderately high, erect, single, 

 especially near the primary area; farther out they may be single, or 

 connate in short lines or small groups. The erect portion appears to 

 consist partly of the upturned distal end of the tubule, as in B. bassleri, 

 new species, but the condition is not so striking; the remaining portion 

 is the peristome, which is considerably smaller than the base on which 

 it arises, diameter 0.16 mm; the peristome is present on most of the 

 tubules (wherein it differs from B. bassleri, in which most of the tubules 

 bear no peristomes). 



The ovicell is similar to that of the genotype but its surface is less 

 depressed, a flat, white, finely perforated layer; the chamber extends 

 downward to the basal lamina, as it does in B. bassleri. The form of the 

 ovicell is like that of bassleri, usually beginning with an arcuate portion 

 and extending into narrow lobes which ramify more or less between the 

 fascicles; in one case a fascicle has been completely surrounded. The 

 ooeciostome differs sharply from that of B. bassleri, as it is a short erect 

 cylindrical tube, not at all compressed, connate only at its base, and its 

 tip circular and noticeably flared, 0.12 mm across and the pore 0.07 mm 

 in diameter. 



Twenty years ago Dr. Anna B. Hastings, after examining a specimen 

 from Mount Desert, Maine, wrote me that "it is likely that it is T. 

 lobulata Hassall," (Osburn, 1933:16). Now, with very mature judg- 

 ment, Dr. Hastings has re-examined the whole problem and writes again 

 (March 8, 1952) in part as follows: 



"This time I say with confidence that three species are involved. 



1, T. lobulata Hincks (not Hassall). Excellently described by 

 Hincks. I need only to add that the ooeciostome is of similar diameter 

 to the zooecial tubes, but shorter, and is attached to the side of one of 

 them. It is widely open, directed upwards or a little obliquely with a 

 slight out-turned rim. 



