BRYOZOA OF THE PHILIPPINE REGION 



177 



Occurrence. — 



D. 5162. Tinagta Island; Tawi Tawi Group; 5° 10' N.; 119° 



47' 30" E.; 230 fathoms; S. brk., Sh.crs; 11.6° C. 

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

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

 Cotypes— Cat. Nos. 7981, 7982, U.S.N.M. 



Genus SYRINGOTREMA Harmer, 1926 



Zoarium free, cylindrical, unjointed, attached by chitinous rootlets. 

 Zooecia with lozenge-shaped or pentagonal areas, bounded by raised 

 walls. Cryptocyst convex and little depressed proximally, produced 

 round the distal border of the orifice, which is far removed from the 

 distal end of the area. Opesia and orifice almost co-extensive, sur- 



A-E. 



Fig. 51. — Genus Syringotrema Harmer, 1926 

 Syringotrema auriculatum Harmer, 1926. A. Operculum with its 



6clerite on the proximal side of which is another sclerite belonging to the margin 

 of the opesia. B. Zooecia and avicularium. C. Young zooecia. D. Mandible. 

 E. Ovicells and parts of zooecia. (All magnified and after Harmer, 1926.) 



rounded proximally and laterally by a cryptocyst-ridge within which 

 is a complete, nearly vertical, calcareous tube terminating in the 

 orifice. Avicularia vicarious. Ovicells with a distal hood, on the 

 proximal side of which are two lateral flaps or auricles. 

 Genotype. — S. auriculatum Harmer, 1926. Recent. 



Genus ATELESTOZOUM Harmer, 1926 



Zoarium free, the zooecia opening principally on two opposite 

 faces. Zooecia with a depressed horizontal cryptocyst, of consider- 

 able extent, its distal lobes prolonged round the border of the orifice 

 without completely uniting on its distal side. Vertical walls much 

 raised, their edges marking off large, angular areas which occupy the 



