544 BULLETIN 100, UNITED STATES NATIONAL MUSEUM 



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. 



Fig. 221.— Family Tubuliporidae Johnston, 1838 



A, B. Idmonea australis MacGillivray, 1884. A transverse section at the base 

 of t a fascicle and a second between the fascicles, X25. C, D. Mesonea simplex, 

 new species. C. Longitudinal section X25 showing the great thickness of the 

 peripheral epitheca, the triparietal gemmation and the length of the vacuolar 

 tubes. D. Transverse section X25, between the fascicles. E, F. Pleuronea 

 striata, new species. E. Transverse section X 25. F. Longitudinal section X 25, 

 illustrating the long thin tergopores. 



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



27' 15" E.; 24 fathoms; co. S., Sh. 

 D. 5219. Mompog Island, between Marinduque and Luzon; 13° 

 21' N.; 122° 18' 45" E.; 530 fathoms; gn. M. 

 Geographic distribution. — Port Philipps Heads at 10-15 fathoms 

 (MacGillivray). 

 Plesiotypes. —Cat. Nos. 8379, 8380, U.S.N.M. 



