560 BULLETIN 100, UNITED STATES NATIONAL MUSEUM 



1887. Lichenopora holdsworthii Waters, On Tertiary^Cyclostomatous Bryozoa 



from New Zealand, Quarterly Journal Geological Society London, vol. 

 48, p. 347. 



1888. Lichenopora holdsworthii Waters, On the ovicells of some Lichenopora. 



Linnean Society Journal, Zoology, vol. 20, p. 285, pi. 15, figs. 7,8 (ovicell). 

 1904. Lichenopora holdsworthii Waters, Resultats Voyage Belgica, Zoologie, 



Bryozoa, p. 97. 

 1915. Lichenopora novae zelandiae Harmer, Polyzoa of the Siboga Expedition, 



Mem. 28, Results Exploration Siboga, p. 155, pi. 211, figs. 6-11. 

 1918. Lichenopora holdsworthii Waters, Bryozoa of the Cape Verde Islands. 



Linnean Society's Journal, Zoology, vol. 34, p. 34. 



Affinities. — Waters, 1887, for the fossils from New Zealand gives 

 the dimensions of the tubes as 0.07 mm. and 0.08-0.09 mm. for 

 the cancelli; for a recent specimen from Australia he gives 0.07 mm. 

 for the cancelli. Our own measurements are much larger. 



Our specimen differs from the figure of Busk, 1875, in the closer 

 arrangement of the central cancelli. It resembles Figures 9 and 10 

 of Harmer, 1910, in the size of the marginal lamina and the aspect of 

 the central cancelli; it differs a great deal from the other figures. 

 Our determination is therefore somewhat doubtful. Moreover, the 

 divergence of interpretation between Harmer and Waters does not 

 permit a greater exactness. 



Occurrence. — D. 5574. Simaluc Island, north of Tawi Tawi; 5° 30' 

 45" N.J 120° 07' 57" E.; 340 fathoms. 



Geographic distribution. — Pacific: Australia in Torres Strait, Vic- 

 toria, New South Wales; South Africa, Tahiti. Indian Ocean: 

 Ceylon, Malasia from 9 to 73 M. (Harmer), Japan (Harmer). 



Plesioty pes. —Cat. No. 8388, U.S.N.M. 



LICHENOPORA QUINCUNCIALIS, new species 



Plate 89, figs. 1-4 



Description. — The zoarium is free, suborbicular, convex, bordered 

 by a narrow marginal lamina. The tubes are arranged in quincunx, 

 the more central being the larger; the peristome is thin, somewhat 

 salient, oval. The cancelli are small and irregular; they are crowded 

 between the peristomes and much scattered at the center. The 

 ovicell covers all the central cavity and it is covered by small cancelli; 

 the oeciostome is large and semicircular. 



Measurements. — Diameter of large colonies, 3.5 mm.; diameter of 

 large tubes, 0.16; diameter of large cancelli, 0.12; diameter of oecio- 

 stome, 0.24. 



Affinities. — This splendid species is absolutely deprived of visors. 

 It resembles Lichenopora jimhriata Busk, 1875, somewhat but it has 

 no pcristomial denticles and moreover its ovicell is more porous. 



Occurrence— D. 4807. Cape Tsiuka, Sea of Japan; 41° 36' 12" N.J 

 140° 36' E. (common). 



Cotypes— Cat. No. 8389, U.S.N.M. 



