542 BULLETIN 100, UNITED STATES NATIONAL MUSEUM 



TUBULIPORA (?) RADICATA, new species 



Plate 83, figs. 3, 4 



Description. — The zoarium is free, horizontal, supported by 

 colonnettes or rooting columns. The tubes are large, distinct, quite 

 convex, arched longitudinally; the peristomie is long and very salient; 

 the peristome is thin and oval. The tubes are sometimes united in 

 small fascicles of 2 to 4 cells. 



Measurements. — Diameter of peristome, 0.24; zooecial diameter at 

 base of peristomie, 0.36; distance of peristomes 0.80; and diameter 

 of zoarium, 1.40. 



Affinities. — The fascicles are rare; there is one with four tubes on 

 one of the specimens, unfortunately too difficult to photograph. 



This is a very vigorous species which is easy to distinguish from the 

 irregular specimens of Diaperoecia radicata Kirkpatrick, 1888, by the 

 great length of its peristomies. We have not found the ovicell. 

 Occurrence. — 



D. 5137. Jolo Light, Jolo; 6° 4' 25" N.; 120° 58' 30" E.; 20 



fathoms; S. Sh. 

 D. 5141. Jolo Light, Jolo; 6° N.; 120° 58' E.; 29 fathoms; 



co. S. 

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

 119° 9' 52" E.; 175 fathoms; fine, S. co.; 13° C. 

 Cotypes.— Cat. No. 8376, U.S.N.M. 



TUBULIPORA VARIANS, new species 



Plate 84, figs. 7-12 



Description. — The zoarium is generally free, it creeps over shells or 

 on the debris of marine algae. The tubes are distinct, very convex; 

 the peristomie is oblique, salient, the peristomes are orbicular, very 

 convex, perforated by 3 or 4 tubes; the oeciostome is small, tubular, 

 salient, adjacent to a tube and opens in the same plane as the other 

 tubes. 



Measurements. — Diameter of peristome, 0.18-0.20 mm.; zoarial 

 dimensions, variable. 



Affinities. — Under the name of Tubulipora varians we group a 

 number of colonies quite variable in form which we have discovered 

 in the same locality, all having the same zoarial dimensions and the 

 same ovicell. Perhaps the specimens shown in Figures 8 and 11 in 

 which the peristomies are a little longer belong to a different species 

 or variety. The dorsal or basal lamella is flat; it is very easily 

 detached from its substratum. 



In its exterior aspect and its micrometric dimensions this species 

 is very close to Diaperoecia rosea, but it differs in its flat dorsal (and 

 not convex), lack of dorsal striations, and in its oeciostome, which is 



