BRYOZOA OF THE PHILIPPINE REGION 69 



desia grandicella, new species, and Acanthodesia savarti Savigny- 

 Audouin, 1826. Our specimens were living. 



Occurrence. — From bottom of a ship at Cavite, Philippines. 



Holotype.— Cat. No. 7846, U.S.N. M. 



ACANTHODESIA QUADRATA, new species 



Plate 1, figs. 6-8 



Description. — The zoarium is free and formed of small, quadrangular 

 rods. The zooecia are distinct, large, elongated, subrectangular; the 

 mural rim is thin, finely crenulated; the cryptocyst is large, smooth, 

 shallow. The opesium is bordered, large, somewhat oval, with a 

 proximal denticle very salient and oblique. 



Measurements. — 



Opesiumj^ = °- 5 °-°- 56 mm - Zooecia P* = ;™~°- 74 mnt 



lZo = 0.16mm. lZz = 0.44 mm. 



Variations. — The four faces of the colony are not always identical; 



two of them are often narrower and here the zooecial width is only 



0.24 mm but the length can attain to 0.80 mm. 



Affinities. — The differences from Acanthodesia virgata are often 



difficult to see when the specimens are not well preserved, but the 



present species differs in its very thin mural rim, in its zooecial length 



never inferior to 0.70 mm., in its bordered opesium, and in its large 



cryptocyst almost as long as that of the opesium. Our specimens 



were dead. 



Occurrence. — 



D. 5230. Limasaua Island between Bohol and Leyte; 10° 01' 



50" N.; 124° 42' 30" E.; 118 fathoms; gy.S.; 14.3° C. 



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.J 125° 16' 30" 



E.; 57 fathoms; Sh. 



Cotypes.— Cat. Nos. 7847, 7848, U.S.N. M. 



ACANTHODESIA VIRGATA, new species 



Plate 2, figs. 2-5 



Description. — The zoarium is formed of small bifurcated rods, 

 quadrangular or more often cylindrical and formed of 6 longitudinal 

 rows of zooecia. The zooecia are distinct, separated by a furrow, 

 subrectangular, elongated; the mural rim is wide and finely crenu- 

 lated transversely. The cryptocyst is small, concave, and bears a 

 salient denticle more or less enlarged at its extremity. The opesium 

 is elliptical or oval. 



Measurements. — 



n • JAo = 0.40 mm. 7 nn ■ JZz = 0.54-0.60 mm. 



Opesium , Zooccia-L 



tZo = 0.16mm. Xlz -0.30 mm. 



2182—29 G 



