BRYOZOA OF THE PHILIPPINE REGION 



151 



Occurrence. — 



D. 4807. Cape Tsiuka, Sea of Japan; 41° 36' 12" N.; 140° 



36' E.; Sagami Bay, 40 fathoms (Ortmann). 

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

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

 Plesiotypes.—C&t. No. 7954, U.S.N.M. 



j K L P 



Fig. 37. — Thalamoporella hamala Harrner, 1926, and other species 



A. Mandible, X85. B-D. Three opercula, X85, with hooklets in the last. 

 E. Hooklets, X50. F. Four hooklets, X85. G-N. Thalamoporella granulata 

 Levinscn, 1909. G. Hooklet, X85. H, I. Two opercula, X85. J, K, L. 

 Three opercula, X85, showing variations in thickness of proximal portion. 

 M, N. Two mandibles, X85. O. Thalamoporella linearis, new species. Oper- 

 culum, X85. P. Thalamoporella expansa Levinsen, 1909. Operculum, X85. 



THALAMOPORELLA HAMATA Harmer, 1926 



Plate 16, figs. 4, 5 



1926. Thalamoporella hamata IIakmek, Polyzoa "Siboga" Expedition, p. 301, 

 pi. 20, figs. 17-20. 



Description. — The zoarium encrusts bryozoa and shells. The 

 zooecia are distinct, elongated, adjacent through their mural rim, 

 elliptical; the mural rim is thin, salient, rounded; the cryptocyst is 

 sunken, flat, smooth; the opesiules are small, round. The apertura 

 is small, terminal, semielliptical; the peristome is thin and salient 

 and bears two large lateral tuberosities. The avicularium is inter- 

 zooecial, smaller than a zooecium, thin, lanceolate, with long beak, 

 very pointed and somewhat curved. 



