4-1. Pub. Ptiget Sound Biol. Sta. Vol. 2, No. 33 



Forficulate. Shears-like. 



Fossate. Having valvular pedicellariae with pits or fossae into which the 

 valves fit when wide open. 



Gonocidium. Pouch for protection of young in genus Pteraster. 



[mbricated. Overlapping like shingles. 



Interactinals. Spines between the adambulacrals and lower marginals. 



Monacanthid. Having 1 spine to a plate. 



Osculum. Opening in gonocidial membrane thru which water is expelled. 



Ossicles. Calcareous plates which make the skeleton of a starfish. 



Papillae. Columnar or hour-glass-shaped ossicles with isolated, circular 

 bases and bearing at summit a group of small divergent spines. 



Papulae. Thin projections thru the body wall used in respiration. 



Paxilliform. Like paxillae. 



Pedicellariae. Modified spines; pincer-like calcareous structures consist- 

 ing of 2 or more blades articulated to a plate in the dermis and capable 

 of a snapping movement. 



Peractinal. A row of spines next to the lower marginals. 



Phanerozonate. Having a perpendicular margin formed by the junction of 

 the 2 rows of marginal plates. 



Protopaxillae. Conical plates covered with rounded granules. 



Pseudopaxillae. Articulated plates with flattened, lobed base, and bearing 

 spinules on a central elevation. 



Reticulate. With lace-like meshes. 



Sub. x\lmost or somewhat. 



Sulcate. Furrowed. 



Synactinal. A row of spines next the adambulacrals. 



Tesselated. Mosaic-like. 



Triplacanthid. 3 spines to a plate. 



Truncate. As if cut off at tip. 



Unguiculate. With a claw ; as tipe of valves. 



