BRYOZOA OF THE PHILIPPINE REGION 171 



special mural rim to the cn 7 ptocyst and different from the cellular 

 mural rim, in the presence of small transverse avicularia facing proxi- 

 mally and in the occurrence of wide ovicellarian cells, grouped on the 

 enlarged portions of the segments. 



None of the published figures give a satisfactory ensemble but we 

 believe our photographs will permit easy and exact determination. 

 Harmer 1926, has well figured the relations between the interior of 

 the cells and their exterior decoration, the form of the ovicellarian 

 orifice and the mandible of the curious elliptical avicularia. 



Measurements. — 



. \ha = 0.075 mm. „ . \Lz = 0.36 mm. 



Aperture l7 Zooecia l7 __ 



Ua = 0.10 mm. U2 = 0.25 mm. 



Occurrence. — 



D. 5235. Nagubat Island, east coast Mindanao; 9° 43' N.; 125° 



48' 15" E.; 44 fathoms; sft. M. 



D. 5478. Tacbuc Point, Leyte; 10° 46' 24" N.; 125° 16' 30" E.; 



57 fathoms; Sh. 



D. 5580. Sibutu Island, Darvel Bay, Borneo; 4° 52' 45" N.; 



119° 06' 45" E.; 162 fathoms; br. S., co.; 13.2° C 



Plesiotype.— Cat. No. 7971, U.S.N.M. 



CELLARIA JAPONICA, new species 



Plate 20, fig. 9 



Description. — The zoarium is free, articulated; the segments are 

 long, cylindrical, formed of eight rows of cells. The zooecia are 

 distinct, separated by a slight furrow, hexagonal, a little elongated, 

 arranged in transverse rows. The mural rim is thick, smooth; the 

 cryptocyst is deep, lozengeshaped, smooth. The aperture is semi- 

 elliptical, transverse, bordered by a thick, salient peristome; the 

 proximal border is straight and bears two small lateral denticles. 

 The ovicell is endotoichal and opens by a small orbicular pore. 



Measurements. — 



A jk = 0.06mm. „ . \Lz = 0A0mm. 



Apertura , Zooeciai, _ on 



ila = 0.12 mm. l(2 = 0.30mra. 



Affinities. — The zooecia of articulation have a large orbicular 

 orifice. Often the cryptocyst is limited laterally by a special, mural 

 rim distinct from the exterior rim. 



This species much resembles Cellaria malvinensis Busk, 1852, but 

 we have not observed a single characteristic avicularium and we can 

 not make the identification. It resembles also Cellaria triangularis 

 Ortmann, 1892, but differs in the absence of avicularian zooecia. Our 

 specimens were dead. 



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

 140° 36' E. 



Cotypes.— Cat, No. 7972, U.S.N.M. 



