282 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 14 



Harmeria scutulata (Busk), 1855 



Lepralia scutulata Busk, 1855 :255. 

 Harmeria scutulata, Levinsen, 1916:447. 



Zoarium encrusting, usually on larger algae, the colonies always 

 small. Zooecia closely set, but distinct with deep separating grooves ; ven- 

 tricose, the front smooth proximally, except for fine growth lines, and with 

 a shield-shaped or oval area proximal to the aperture which is definitely 

 punctate. There are two sizes of the zooecia. 



The ancestrula is membraniporoid with a complete membranous area ; 

 the first daughter zooecia are large, similar in size to the ancestrula, and 

 these are followed suddenly by much smaller zooecia which bear a 

 short, umbonate median process and a broad collar around the side of 

 the aperture. 



Recorded from various localities north of Europe, in Greenland 

 waters as far north as Etah, Hudson Strait, and as far west as Dolphin 

 and Union Strait (Osburn 1923 :9d) and Victoria Island, North-West 

 Territory, Canada (Hutchins 1940:33). The following additional record 

 suggests that it is circumpolar. 



Punuk Island, Bering Sea. From a shell in the Los Angeles Museum, 

 collector unknown, one colony. 



Genus HINCKSIPORA new genus 



Zoarium encrusting. The frontal is a heavy pleurocyst with a single 

 row of areolar pores and covered by a thick ectocyst. The ovicell is 

 endozooecial, opening below the closed position of the operculum and 

 extending into the proximal end of the succeeding zooecium. The oper- 

 culum is simple, heavily chitinized, attached without cardelles and straight 

 across its proximal border where it is broadly attached to the compensa- 

 tion sac, occlusar muscles attached a little inside from the border. The 

 primary aperture is straight or nearly so on the proximal border and 

 without a sinus ; the suboral spinule, often wanting, is not a lyrula ; the 

 primary peristome is wanting and the oral rim is formed by the thick 

 frontal wall. No spines, no cardelles, no avicularia ; multiporous septulae 

 present in the lateral and distal walls. Genotype, Mucronella spinulifera 

 Hincks, 1889. 



The species which forms the genotype has been passed around from 

 one genus to another, Lepralia, Discopora, Porellina, Mucronella and 

 Monoporella, but for obvious reasons it cannot be assigned to any of 

 these as they are now understood. The nature of the ovicell excludes 

 It from all of them. The operculum is simple and so firmly attached to 



