LIVING BRACHIOPODA. 



377 



c. u. — coelomic cavity. 



ci. — cirrus or cirri. 



ci. m. — cirri muscles. 



c. 1. — coi-pora lutea. 



c. m. — cutaneous muscles. 



c. o. — central oblique muscle. 



c. r. — ciliary ridge. 



cru. — crura. 



c. s. — coelomic sinus. 



c. t. — connective tissue. 



c. w. — coelomic wall. 



D. — dorsal shell. 



di. — divaricator muscle. 



e. — eggs. 



e. e. — ectodermal epithelium. 



e. g. — external glands. 



en. — endothelial lining of pallium. 



e. o. — external oblique muscle. 



e. s. — encircling sinus, 

 f. — faeces. 



f. f . — folds of funnel. 



f. y. — fibrous yoke, 

 g- — gut. 



g. a. — gill ampullae, 

 g. b. — genital band. 



, g. b. s. — great brachial sinus, 

 g. en. — glandular enlargements, 

 g. f.— gill fold. 



g. g. — glandular growth on edge of ilio-parietal band, 

 gl. — gland cells. 

 gp. — gastro-parietal band. 



g. p. a. — -ganglion of posterior adductor muscles, 

 gp. m. — gastro-parietal muscle. 

 g. t. — glandular tip of spermary thread. 

 H. — " heart of Hancock." 

 i. — intestine. 



i. b. — inner band of pallial muscles. 

 in. — infra^oesophageal ganglion, 

 ip. — ilio-parietal band, 

 i. t. — inner tube. 

 1. — lateralis muscle, 

 la. — lacunae. 



1 . b. — lateral branch of anterior sinus. 

 1. i. — lumen of intestine. 

 1. p. — lateral parietal band. 

 1. p. s. — lateral pallial sinus. 

 1. s. — lateral septa, 

 m. — mouth. 



m. cl. — median cluster of setae. 

 m. f. — muscle fiber, 

 m. g. — median groove of pallium, 

 m. p. — main pallial sinus, 

 m. s. — median septum, 

 m. si. — median sinus. 

 m. t. — muscular tube, 

 n. — nerve. 



n. b. — nephridium body, 

 n. ba. — nephridial band. 



ne. — nephridium. 



nf . — nephrostome. 



n. o. — nephridial opening (external). 



n. p. — nephridial papillae. 



n. s. — natural size. 



n. t. — nephridial tube. 



o. a. — obliquus anterior muscle. 



o. b. • — outer band of pallial muscles. 



oc. — anterior occlusor muscle. 



oc. I. — occlusor externus muscle. 



oc. II. — occlusor internus muscle. 



oe. — oesophagus. 



o. e. — obliquus externus muscle. 



o. h. s. — outer horny sheath. 



0. i. — obliquus internus muscle. 



o. 1. s. — opening of lateral sinus. 



o. m. — obliquus medius muscle. 



o. p. — obliquus posterior muscle. 



o. p. s. — outer pallial sinus. 



o. s. — opening of main pallial sinus. 



ot. — otocyst. 



ov. — ovaries. 



pa. — parasite. 



p. b. — posterior band. 



p. b. I. — posterior branch of lateral sinus. 



p. c. — peduncular cavity. 



p. ca. — peduncular canal. 



p. ch. — pallial chamber. 



p. cl. — posterior cluster of setae. 



pe. — peduncle. 



ph. — pharynx. 



ph. g. — pharyngeal gland. 



ph. m. — pharyngeal muscles. 



p. m. — perivisceral membrane. 



p. n. — peduncle notch. 



p. o. — posterior occlusor muscle. 



pro. — protegulum. 



p. s. — peduncular septum. 



p. si. — peduncular sinus. 



r. — rectum. 



r. b. — retractor brachia muscle. 



re. — rectus muscle. 



ro. — rostrum. 



s. — sinus at base of cirri. 



s. b. — shell border. 



s. b. s. — small brachial sinus. 



se. — setae. 



s. f. — setigerous follicles. 



s. g. — stomachal glands. 



s. g. d. — stomachal gland duct. 



s. g. o. — stomachal gland opening. 



a. m. — setal muscles. 



sp. — spermatospore. 



spe. — spermaries. 



spi. — spiculae. 



spm. — spermatozoa. 



sp. t. — spermatic threads. 



s. s. — supporting substance. 



