236 PROCEEDINGS OF THE NATIONAL MUSEUM vol. los 



Cellaria wandeli Calvet 



Plate 7,A,B 

 Cellaria wandeli Calvet, 1909, p. 23, pi. 2, figs. 3-6. 



Taxonomy: This species fits most uncomfortably in this genus, 

 yet there seems to be no other place to rightly put it, at the moment. 

 Its avicularia are similar to those of the genus Cellaria but its orifice 

 and operculum are a bit distorted and do not quite fit the generic 

 description, being longer than wide and somewhat more like those of 

 Mawsonia. 



Colony: The material consists of seven tiny, ivory colored frag- 

 ments, not one of them more than 7 mm. long. They are calcareous, 

 cylindrical, slender, ranging in diameter from 0.648 to 0.885 mm. 

 (average 0.754 mm.). Areolation appears to be mostly rhomboid. 

 Zoids are 4-6-sided. The number of zoids in a transverse series 

 around the imaginary longitudinal axis of the stalk appears to be 

 five. In Calvet's original description of this species there was no 

 mention of the number of zoids in a series nor were any measurements 

 given. Calvet's excellent illustrations (1909, pi. 2, fig. 3) were of a 

 young colony whereas the figures shown here are of older individuals. 



Zooecia: The zooecia are longer than wide. Their length ranges 

 from 0.734 to 0.850 mm. (average 0.785 mm.) ; their width from 0.302 

 to 0.389 mm, (average 0.347 mm.). The few fragments of the 

 present collection contained zoids which were mostly rhombic. The 

 zooecial corners are quite pointed. The walls fuse together externally 

 to form a thin, knife-like edge which is a bit jagged or rough. The 

 walls are slightly crinlded or marked with faint vertical grooves. The 

 Myalls are salient, tall, flared like the sides of a pan from the flattened 

 depressed frontal surface. The zooecial frontal is flattened except 

 for the orifice which is salient. Cryptocyst ridges and chitinous 

 parentheses rods were absent from these specimens. 



Zooecial orifice: The zooecial orifices are longer than wide, 

 measuring 0.130 to 0.151 mm. (average 0.138 mm.) in length and 

 0.086 to 0.115 mm. (average 0.102 mm.) in width. They are wider 

 proximaUy than distally. The distal end is curved convexly. The 

 two lateral sides pinch in slightly in their midsection, then diverge 

 proximally. The lower lip is narrow, spoutlilve, salient. On each 

 side of it is a deep sinus. Back of the sinuses, within the orifice, are 

 two condyles for the articulation of the operculum. The cryptocyst 

 just beneath the proximal lip is depressed. The operculum was not 

 seen. 



OviCELLs: The ovicells are not raised above the margin of the 

 zooecia. Only one ovicell has a well curved, crescentic opening (all 

 the other ovicell openings are rounded), whether incomplete or eroded 



