PACIFIC COAST OLIGOCHiETA. 



103 



EEFEKENCE TO LETTEKS ON PLATES. 



a. c. ijl. aiiteriur calcic glaini. 



a. f. auterior fold of iiophriilinm. 



a. nephr. anterior nc'[iliriilia. 



a. spd. anterior spermduct. 



air. atrium. 



bd. body-wall. 



hi. blood vessel or capillaries. 



bl. s. blood siuus. 



br. bridge iu nephridiiim. 



buc. buccal cavity. 



c. clusters of luuate cells. 



c. c. columuar cells. 



c. ep. coelomic epithelium. 



c. gl. calciferous "lands. 



ch. discharge chambers of glands. 



chlo. chloragogeu cells. 



cil. ciliated epithelium. 



cl. c. clitellar cells. 



cl. clitellum. 



c. m. circular muscles. 



com. commissures. 



c. r. ciliated rosettes or si^erm-funuels. 



c. t. connective tissue. 

 cu. cuticle. 



d. gl. dark staining glands. 

 d. pr. dorsal pore. 



d. V. dorsal vessel. 



e. epithelial cells. 

 ept. epithelium. 

 gl. glands. 



gl. c. lanicellar glands. 



gl. pr. glandular part of prostate. 



gizz. gizzard. 



h. heart. 



hy. hypodermis. 



/. s. gr. intersegmental groove. 



I. c. large cells. 



I. m. longitudinal muscles. 



m. muscles. 



m. atr. muscular atrium. 



mes. mesenteric tissue. 



m. pr. muscular prostate. 



n. nephridia. 



n. c. nerve cells. 



ne. nerve ganglion. 



nee. neck of nephridium. 



neph. nephridium. 



neph. p. nephropore. 



res. oesophagus. 



ov. ovary. 



ovd. oviduct. 



org. sense organ. 



p. c. gl. posterior calciferous divorticulum. 



/)./. posterior fold, nephridium. 



phx. pharynx. 



p. ne/ih. posterior nephridia. 



/);-. prostate. 



/). spd. posterior spermduct. 



pr. sto. prostomium. 



ps. penial setie. 



prl. peritoneum. 



se. secreted matter. 



s. int. sacculated intestine. 



Sep. gl. septal gland. 



Sep. septum. 



s. gl. suprapharyugeal glands. 



s. org. b, sense organ cells iu equatoreal zone. 



s. ory. pr. sense organ cells iu prostomium. 



spc. sperm-cells. 



spd. spermduct. 



spgn. spermatogonia. 



spr. spur of nephridium. 



s. ps. sac with peuial setie. 



sp. s. sperm-sacs. 



s. ph. sgl. subpharyugeal glands. 



spth. spermatheca. 



spth. p. spermatheoal pore. 



I. testes. 



t. m. transverse muscles. 



Irb. trabecula. 



th. spd. thicker part of spermduct. 



Iu. tubular intestine. 



tub. p. tubercula pubertatis. 



ty. typhlosole. 



u. c. unicellular glands. 



V. g. ventral ganglion. 



V. V. ventral vessel. 



V. sgl. ventral gland. 



w. " windings " of nephridial ducts. 



