NO. 5 OSBURN : BRYOZOA 37 



Smittina smittiella, new species 

 VI ate 6, Figs. 1-2 



Smitt 1873:60 (Escharella landsborovii var. minuscula). 



For nearly forty years I have puzzled over what Smitt had in the 

 Pourtales collections which he referred to his northern variety minuscula, 

 which is now recognized to be a distinct species. 



In the present collection there are several colonies which fit the short 

 description given by Smitt and the width of the aperture also agrees with 

 his measurement. The ovicell is quite different from that of minuscula in 

 being broader and perforated at all stages of calcification. The minute 

 median suboral avicularium is different in that the mandible is very short- 

 spatulate (broader near the tip) and the salient rostrum is denticulate 

 or serrate, with 6 to 8 denticles across its projecting upper border. The 

 lyrula is broad, with lateral projections at the tip. Zooecial length 0.45 

 mm (0.40 to 0.55 mm) ; the aperture is 0.10 to 0.12 mm wide, and the 

 ooecium averages 0.24 mm in complete calcification. 



Neither of Smitt's figures (plate 10, figs. 201, 202) refer to the pres- 

 ent species, but to what he designated as "typical Escharella Lands- 

 borozni." Whether or not he was correct in this determination cannot be 

 decided yet, as no landsborovii have been recovered in all of the more 

 recent dredging in the West Indian region. 



Type.—AHY no. 7. 

 Type locality. — Station A18-39. Also Station At505, 8 miles SW of 

 San Nicolaas Bay, Aruba Island at 21 to 23 fms, and "Pelican" Sta. 

 136-5, south of Pensacola, Florida. 



Family Tubucellariidae Busk 1884 



The zoarium is erect and jointed, with radicles for attachment. The 

 tubular zooecia are arranged to form rounded internodes ; the peristome 

 is much produced and proximal to it is a small ascopore. The ovicell is 

 merely an enlargement of the peristomial tube. 



Genus TUBUGELLARIA d'Orbigny 

 Tubucellaria cereoides (Solander), 1786 



Osburn 1914: 203 and 1940: 440. Canu and Bassler 1928: 113. 



The rounded stems with chitinous joints are sparsely branched. The 

 zooecia are tubular and immersed, but the peristomes are more or less 

 erect, elongate and usually fluted ; the frontal is a tremocyst and a small 



