NO. 5 OSBURN : BRYOZOA 31 



Genus LAGERNA JulHen 1888 

 Lacerna horsti (Osburn), 1927 



Osburn 1927:127 (Schizopodrella) ; 1940:426. Marcus 1937:87 

 (Schizopodrella); 1938:39; 1939: 139. 



Known from the type locality at Curagao Island and from of? 

 Guanica Harbor, Porto Rico. Marcus records it from Santos Bay, Brazil. 



Distribution.— ?>\iat[ons A14-39, A42-39, At512 and At529. These 

 stations place the locations at Cape la Vela, Colombia; Margarita Island 

 and the Gulf of Venezuela at 17 to 23 fms. 



Genus CYCLOPERIELLA Canu and Bassler 1920 



Gycloperiella rosacea, new species 



Plate 5, Figs. 1-3 



Zoarium erect, branching irregularly, tubular (possibly encrusting an 

 alga or sponge), or encrusting on shells; a second layer of zooecia some- 

 times superposed. The color is a beautiful roseate pink. 



The zooecia are rather large (0.55 to 0.78 mm long by 0.40 to 

 0.52 mm wide), a little inflated and separated by deep grooves when 

 young, but becoming nearly flat with complete calcification. The frontal 

 is a thick, heavy tremocyst, with numerous large pores. The peristome is 

 low, thin when young, but becoming very broad with age. The primary 

 aperture is slightly longer than broad (about 0.18 by 0.16 mm), the 

 proximal border slightly less curved than the distal ; with a pair of short, 

 strong condyles. The operculum is well chitinized, brownish in color, 

 with a heavy dark brown sclerite encircling on the proximal border, 

 enlarged at the condyles and extending forward nearly straight on each 

 side at some distance within the lateral border, then fading out somewhat 

 to meet within the distal border. 



Avicularia are rather rare, but occasionally there is a small one with 

 an acute triangular mandible, directed forward or toward the peristome, 

 at the side of the aperture. Spines wanting. 



The ovicell is large and not immersed, thick walled. In the fertile 

 zooecium the peristome rises prominently on the sides, leaving a proximal 

 sinus, and uniting with the proximal edges of the ooecium to encircle the 

 aperture ( Fig. 2) . 



This genus is known only from the genotype, C. rubra Canu and 

 Bassler (1923 : 137) from the Miocene and Pliocene of the Southeastern 

 States and Jamaica. The present species is remarkably like C. rubra in 



