370 BULLETIN 100, UNITED STATES NATIONAL MUSEUM 



RETEPORA GRANULATA MacGillivray, 1869 



Plate 48, figs. 6-8 



1869. Retepora granulata MacGillivray, Descriptions Australian Polyzoa, 



Transactions Royal Society Victoria, vol. 9, p. 15 (sep). 

 1878. Retepora granulata Hincks, On the genus Retepora, Annals and Magazine 



Natural History, ser. 5, vol. 1, p. 363, pi. 19, fig. 13. 

 1882. Retepora granulata MacGillivray, Descriptions New Polyzoa, Part 2 r 



Proceedings Royal Society Victoria, vol. 19, p. 4, pi. 2, fig. 7. 

 1885. Retepora granulata MacGillivray, Prodromus Zoology Victoria, Decade 



10, p. 29, pi. 94, fig. 11, (opercula) pi. 99, fig. 1-3. 



Biology. — MacGillivray did not indicate the depths at which' his 

 specimens were found. In the Philippines this is a species of great 

 depths. 



Occurrence. — 



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. 

 Port Philipp Head, Australia (MacGillivray). 

 Plesiotypes — Oat. Nos. 8158, 8159, U.S.N.M. 



Genus SCHIZELLOZOON Canu and Bassler, 1917 



SCHIZELLOZOON PHENICEUM Busk, 1852 



Plate 48, figs. 1-5 



1889. Retepora phenicea Jelly, Synonymic Catalogue of Marine Bryozoa, p. 218. 



1890. Retepora phenicea Kirkpatrick, Hydrozoa and Polyzoa of "the China Sea, 



Annals Magazine Natural History, ser. 6, vol. 5, p. 17. 

 1890. Retepora phenicea Kirkpatrick, Hydrozoa and Polyzoa from Torres 

 Straits, Proceedings Royal Dublin Society, vol. 6, p. 612. 



Measurements. — 



A , |k = 0.14mm. „ . (£0 = 0.40 mm. 



Apertura( k = ( , og mm Zooeca [ J$ _ 0M mm 



Structure. — The published figures are incomplete, for, according to 

 Hincks, 1878, MacGillivray, 1885, and Waters, 1887, the frontal 

 bears sometimes "large foramina." There is in fact from 3 to 5 

 areolar pores never symmetrically arranged and clearly visible in 

 tangential section. They are always hidden by the ectocyst. 



The frontal avicularium appears rarely on our specimens. It 

 appears sometimes with the aspect described by Hincks, 1878, that 

 is to say in "a depression on the front of the cell below the mouth 

 from which a pointed avicularium extends upwards to the lower 

 margin." 



There appears to be two kinds of opercula figured by MacGillivray, 

 1885. Busk, 1884, figured one and Waters, 1887, figured the other. 

 Those which we have prepared correspond to the figure of Waters, 

 1887; however, the muscular attachments are more distant from 

 the edge. 



