BRYOZOA OF THE PHILIPPINE REGION 365 



RETEPOBA (RETEPORELLA) CLYPEATA, new species 



Plate 46, figs. 7-10 



Description. — The zoarium is free, dendroid, dichotomous; the 

 branches are rather long, compressed with 3 to 4 longitudinal rows 

 of zooecia. The zooecia are distinct separated by a salient thread, 

 somewhat elongated, broad in the form of a shield; the frontal is 

 smooth and little convex. The peristome is salient principally on 

 the sides; it is incomplete on the young zooecia only; it is indented 

 in. front by a short, rounded pseudorimule; it bears laterally two large 

 spines. The ovicell is very small, deeply immersed; it bears a median 

 fissure and its orifice is protected by a small tongue. The dorsal 

 bears vibices arranged on each side of a median sinuous thread; 

 they separate the zoarial surface into two longitudinal series of 

 irregular polygons. 



Measurements. — 



n „ • fZz = 0.45 mm. _ . 



Zooecia Peristome (diameter) =0.30 mm. 



U2 = 0.25-0.30 mm. v ' 



Affinities. — This species differs from Reteporella spinosissima in its 

 peristome not projecting into a tube, and in its axial and not rectilinear 

 vibices. It differs from Reteporella tenuitelifera new species, in the 

 absence of avicularia. 



Biology. — Our specimens were dead and worn . This species accommo- 

 dates itself to rather varied depths of water. Its geographic distribu- 

 tion is also rather extended. 

 Occurrence. — 



D. 5137. Jolo Light, Jolo; 6° 04' 25" N.; 120° 58 r 30" E.; 20 



fathoms; S. Sh. 

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



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

 D. 5179. Romblon Light, Romblon; 12° 38' 15" N.; 122° 12' 



30" E.; 37 fathoms; hard sand; 24.2° C. 

 D. 5212. Panalangan Point, east of Masbate Island; 12° 04' 15" 



N.; 124° 04' 36" E.; 108 fathoms; gy. S., M. 

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

 57 fathoms; Sh. 

 Cotypes— Cat. No. 8147, U.S.N.M. 



RETEPORA (RETEPORELLA) LONGICOLLIS, new species 



Plate 46, figs. 11-18 



Description. — The zoarium is free, dendroid, dichotomous; the 

 fronds are short, broad, alternate, much compressed. The dorsal 

 is ornamented with oblique vibices rather regularly arranged on 

 each side of a median sinuous line; the irregular lozenge shaped areas 

 outlined by them are ornamented with 2 or 3 large hollow tuberosi- 



