566 BULLETIN 100, UNITED STATES NATIONAL MUSEUM 



Affinities. — All our ovicells were broken but the concave opening 

 left by them is absolutely that of Tretocycloecia. On the frontal the 

 tubes are little different from the mesopores; they appear arranged 

 in quincunx or in transverse lines. At the bottom of the ovicells 

 they are clearly distinguished from the mesopores. The arrangement 

 of the dorsal pores is rather variable as can be seen on our figures. 



This species differs from Frondipora palmata Busk, 1875, the dorsal 

 of which has never been figured, in the absence of pinnules on the 

 branches. The two species certainly belong to the same group. The 

 flabellate form of the base shows the relationship to the preceding 

 in which there are two nodes of ramification. All these zoarial forms 

 which it is impossible moreover to outline exactly appear to us to be 

 true biologic caprices and to have no generic value. 

 Occurrence. — 



D. 5137. Jolo Light, Jolo; 6° 04' 25" N.; 120° 58' 30" E.; 20 



fathoms; S. Sh. 

 D. 5147. Sulade Islands, Sulu Archipelago; 5° 41' 40" N.; 120° 



47' 10" E.; 21 fathoms; co. S., sh. 

 D. 5151. Sirun Island, Sulu Archipelago; 5° 24' 40" N.; 120° 27' 



15" E. ; 24 fathoms; co. S., Sh. 

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

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

 D. 5579. Sibutu Island, Darvel Bay, Borneo; 4° 54' 15" N.; 

 119° 09' 52" E.; 175 fathoms; fine S. Co.; 13° C. 

 Coty pes. —C fit. No. 8411, U.S.N. M. 



TRETOCYCLOECIA PELLICULATA Waters, 1879 



Plate 91, figs. 7-11 



1879. Heteropora pelliculata Waters, On the occurrence of recent Heteropora, 



Journal Royal Microscopical Society, vol. 2, pp. 390-393, pi. 15. 

 1879. Heteropora neozelancia Busk, On recent species of Heteropora, Journal 



Linncan Society, Zoology, vol. 14, pp. 724-726, pi. 15. 

 1882. Heteropora species Whiteaves, On a recent species of Heteropora from the 



Strait of Juan de Fuca, American Journal Sciences and Arts, ser. 3, vol. 24, pp. 



279-280 (according to Robertson). 

 1884. Heteropora pelliculata Waters, On fossil Cyclostomatous Bryozoa from 



Australia, Quarterly Journal Geological Society, vol. 40, p. 678, pi. 31, figs. 24 



and 28 (New Zealand). 

 1887. Heteropora pelliculata Waters, On Tertiary Cyclostomatous Bryozoa from 



New Zealand, Quarterly Journal Geological Society, vol. 43, p. 348 (Napier). 

 1890. Heteropora pelliculata Ortman, Die japanische Bryozoen-Fauna, Archiv. 



fur Naturgcschichte, vol. 50, p. 66. 

 1910. Heteropora pelliculata Robertson, The Cyclostomatous Bryozoa of the 



west coast of North America, University of California publications in Zoology, 



vol. 6, p. 258, pi. 25, fig. 51-55 (Alaska, Puget Sound, California). 

 1920. Heteropora pelliculata Canu and Bassler, North American Early Tertiary 



Bryozoa, Bull. 106, U. S. National Museum, p. 681, fig. 222 J. K. L. p. 676, fig. 



219, fig. E-P. 



