102 BULLETIN 100, UNITED STATES NATIONAL MUSEUM 



Norman, 1903, it appears incorrect to us to classify this group here 

 as Harmer has in 1926. 



Occurrence.— D. 5179. Romblon Light, Romblon; 12° 38' 15" N.; 

 122° 12' 30" E.; 37 fathoms; hard S.; 24.2° C. 



Geographic distribution. — Pacific: Nukatofa, Tongatuba (20 

 fathoms). 



Plesiotype. —Cat. No. 7876, U.S.N.M. 



CALLOPORA TENUIROSTRIS Hincks, 1880 



Plate 3, fig. 6 



1878. Membranipora flemingii Waters, Bryozoa of the Bay of Naples, Annals 



and Magazine Natural History, ser. 5, vol. 3, p. 122, pi. 13, fig. 2. 

 1880. Membranipora tenuirostris Hincks, Contributions History Marine Poly- 



zoa, Annals and Magazine Natural History, ser. 5, vol. 6, p. 70 (sep. 2), 



pi. 9, fig. 3. 

 1882. Membranipora lenuirostris Hincks, Polyzoa Queen Charlotte Islands, 



Annals and Magazine Natural History, ser. 5, vol. 10, p. 255. 

 1885. Membranipora tenuirostris Waters, Journal Royal Microscopical Society, 



ser. 2, vol. 5, p. 5, pi. 15, fig. 41. 

 1887. Membranipora tenuirostris Hincks, Polyzoa of the Adriatic, Annals and 



Magazine Natural History, ser. 5, vol. 19, p. 314. 

 1889. Membranipora tenuirostris Jellt, A Synonymic Catalogue of Marine 



Bryozoa, p. 167. 

 1891. Membranipora tenuirostris Waters, North Italian Bryozoa, Quarterly 



Journal Geological Society, London, vol. 47, pi. 11. 

 1898. Membranipora tenuirostris Waters, Observations on Membraniporidae, 



Linnean Society's Journal, Zoology, vol. 26, pp. 668, 685, pi. 47, fig. 7 



(operculum) . 

 1907. Crassimarginatella tenuirostris Norman, On the Polyzoa of Madeira, 



Linnean Society's Journal, Zoology, vol. 30, p. 288. 

 1918. Membranipora tenuirostris Waters, Bryozoa from the Cape Verde Islands, 



Linnean Society's Journal, Zoology, vol. 34, p. 9 (bibliography). 

 1928. Callopora tenuirostris Canu and Bassler, Fossil and Recent Bryozoa of 



the Gulf of Mexico Region, Proc. U. S. National Museum, vol. 72, 



art. 14, p. 31, pi. 3, fig. 4 (biologic distribution). 



Our specimen from locality D. 5137 was dead; it encrusted a nulli- 

 pore. The distal canal of the avicularium is slightly spatulate. 

 This is the only difference from the known specimens. Perhaps 

 later it will be necessary to create a new variety. Another specimen 

 shows that this form of avicularium is not constant. 

 Occurrence. — 



D. 5137. Jolo Light, Jolo; 6° 04' 25" N.J 120° 58' 30" E.; 



20 fathoms; S. Sh. 

 D. 5151. Sirun Island, Sulu Archipelago, Tawi Tawi Group; 

 5° 24' 40" N.; 120° 27' 15" E.; 24 fathoms; co. S., 

 Sh. 

 D. 5577. Mount Dromedario, Tawi Tawi; 5° 20' 36" N.; 

 119° 58' 51" E.; 240 fathoms; crs. S.; 12.4° C. 



