452 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 14 



The ovicell is about 0.20 mm wide, broader than long, smooth when 

 young, with an elongate frontal fissure and a small, pointed labellum; 

 later the ectooecium becomes very thick-walled except in the region of 

 the fissure. 



Type, AHF no. 98. 



Type locality, Hancock Station 66-33, Tagus Cove, Albemarle 

 Island, Galapagos, 0°16'17"S, 91°22'41"W, 10 to 20 fms. One colony. 



Genus LEPRALIELLA Levinsen, 1916 



"The zooecia are provided with a distinct, not beaded or faintly so, 

 vestibular arch, and with two well-developed hinge-teeth. Avicularia of 

 different size and position. The ooecia, the proximal portion of which 

 is not pedicel-shaped or shaft-like, have no pores and are not provided 

 with an inwards directed tongue" (Levinsen 1916:466). Genotype, 

 Cellepora ramulosa contigua Smitt, 1867. 



Lepraliella contigua (Smitt), 1867 

 Plate 53, figs. 3-4 



Cellepora ramulosa contigua Smitt, 1867:31. 

 Lepraliella contigua, Levinsen, 1916 :467. 



The zoarium is encrusting, porcellanous and shining. The zooecia 

 are of moderate size, 0.40 to 0.50 mm long by 0.30 to 0.35 mm wide, 

 distinct and ventricose when young, soon becoming very heavily cal- 

 cified ; the front is roughly granular or nodulous, with 2 or 3 pores 

 at a little distance from the margin (as in other members of the 

 Reteporidae). The primary aperture is semicircular, the proximal border 

 straight or slightly arcuate, about 0.15 mm wide by 0.10 mm long, the 

 vestibular arch smooth or rarely very faintly beaded ; the primary peri- 

 stome thin and low (higher on the proximal border) ; the 3 or 4 long 

 oral spines arise distal to the primary peristome. The thickening of the 

 frontal wall obscures all of the primary oral characters and the secondary 

 aperture varies in form. There is a moderately large suboral avicularium 

 at one side of the midline, its base often forming an irregular prominent 

 umbonate process, its mandible long-triangular, hooked at the tip, and 

 directed more or less laterally in front of the aperture. 



The ovicell is rounded and smooth and conspicuous when young, but 

 soon becomes much embedded ; the proximal part of the front is incom- 

 plete leaving a large and more or less elongate triangular orifice 

 ( ? frontal fissure). 



