322 UniversHij of California FubJicatio))s in Zoology. [Vol.4 



ABBREVIATIONS USED IN THE PLATES. 



u. — apex. 



ah. — aboral. 



add. mus. — adductor muscle. 



ang. — angle. 



ant. — anterior. 



ant. or. — anterior orifice. 



ap. — aperture. 



ap. t. — apical tuft. 



ar. — area. 



are. — areolations. 



as. or. — asymmetrical orifice. 



a V. — avicularium. 



av. m. — avicularian mound. 



bl. pro. — blunt process. 



bh sp. — blunt spine. 



br. sp.- — branched spine. 



cal. ar. — calcareous area. 



cat. lam. — calcareous lamina. 



cal. wa. — calcareous wall. 



clii. r. — chitinous rim. 



cl. m. — cell mass. 



d. — denticle. 



d. av. — dorsal avicularium. 



dis. w. — distal wall. 



ep. pro.- — epithelial process. 



fd. mem. — folded membrane. 



fen. — fenestra. 



fi. — fiber. 



fl. sp. — flaring spine. 



fl.r. sp. — flexible sjiine. 



for. — foramen. 



fr. sp. — frontal spine. 



gr. r. — growing rim. 



gra. ar. — granular area. 



in. op. — inner operculum. 



int. — intestinal tract. 



im. zoe. — innnature zocecia. 



A-.— keel. 



lat. mem. — lateral membrane. 



lat. pro. — lateral process. 



lat. sp. — lateral spine. 



m. — mouth. 



man. — mandible. 



mam. — mamidary process. 



mar. — margin. 



mus. att. — muscular attachment. 



mu. pro. — mucronate process. 



mti. — nnicro. 



111-. — neck. 



o. — oral. 



o. rb. — oral rib. 



oe. — oa?ciuni. 



op. — operculum. 



or. — orifice. 



ou. op. — outer operculum. 



p. — pore. 



p. pi. — porous plate. 



p. or. — posterior orifice. 



pd. — polypide. 



per. — peristome. 



pi. — plate. 



post. — posterior. 



pri. or. — primary orifice. 



Ijro. — process. 



pro. m. — protoplasmic mass. 



pyr. — pyriform body. 



rb. — rib. 



re. d. — retractile disk. 



re. pd. — retracted polypide. 



s. — sinus. 



se. — seta. 



sec. or. — secondary orifice. 



sh. — shell. 



sp.: — spine. 



sp. av.- — spatulate avicularium. 



sp. pro. — spinous process. 



stm. — stomach. 



St. c. — stiff cilia. 



St. sp. — stiff spine. 



sue. — sucker. 



t. pro. — tubular process. 



t. sp. — tall spine. 



th. r. — thickened rim. 



trab . — trabecula. 



tri. por. — triangular portion. 



tri. spa. — triangular space. 



tv. ft. — tube feet. 



tv. pro. — tubular process. 



um. — umbo. 



um. pro. — und)onate process. 



V. ch. — vibracular chamber. 



y. soe. — young zocecium. 



roe. — zocecium. 



