PACIFIC COAST OLIGOCH^TA. 



179 



REFEKENCE TO LETTERS ON PLATES. 



a. c. gl. anterior calcic gland. 



a./, anterior fold of uephridiuni. 



a. nephr. anterior nephridia. 



a. spd. anterior spermduct 



air. atrium. 



bd. body-wall. 



bl. blood ve.ssel or capillaries. 



bl. 8. blood sinus. 



br. bridge in nephridium. 



buc. buccal cavity. 



c. clusters of lunate cells. 



c. c. columnar cells. 



c. ep. ctulomic epithelium. 



c. gl. calciferous glands. 



cA. discharge chambers of glands. 



cklo. chloragogen cells. 



cil. ciliated epithelium. 



cl. c. clitellar cells. 



cl. clitellum. 



c. m. circular muscles. 



com. commissures. 



c. r. ciliated rosettes or sperm-funnels. 



c. t. connective tissue. 

 cu. cuticle. 



d. gl. dark staining glauds. 

 (/. ///•. dorsal pore. 



d. IK dorsal vessel. 



e. epithelial cells. 

 Cj/t. epithelium. 

 gl. glands. 



gl. c. uuicellar glands. 



gl. pr. glandular part of prostate. 



gizz. gizzard. 



h. heart. 



hij. hypodermis. 



i. s. gr. intersegmental groove. 



I. c. large cells. 



I. m. longitudinal muscles. 



m. muscles. 



m. air. muscular atrium, 



mes. mesenteric tissue 



m. pr. muscular prostate. 



n. nephridia. 



n. c. nerve cells. 



7ie. nerve ganglion. 



nee. neck of nephridium. 



neph. nephridium. 



tieph. p. uephropore. 



«•«. oesophagus. 



ov. ovary. 



ovd. oviduct. 



org. sense organ. 



/). e. gl. posterior calciferous diverticulum. 



p./. posterior fold, nephridium. 



phx. pharynx. 



p. neph. posterior nephridia. 



pr. prostate. 



p. spd. posterior spermduct. 



pr. sto. prostomium. 



ps. peuial setae. 

 prt. peritoneum. 



ne. secreted matter. 



». int. sacculated intestine. 



sep. gl. septal gland. 



Sep. septum. 



s. gl. suprapharyngeal glands. 



«. org b. sense organ cells in equatoreal zone. 



s. org. pr. sense organ cells in prostomium. 



spc. sperm-cells. 



spd. spermduct. 



spgn. spermatogonia. 



spr. spur of nephridium. 



s. ps. sac with penial sette. 



sp. s. sperm-sacs. 



s. ph. .igl. subpharyngeal glands. 



spth. spermatheca. 



spth. p. spermathecal pore. 



t. testes. 



I. in. transverse muscles. 



Irb. trabecula. 



Ih. spd. thicker part of spermduct. 



In. tubular intestine. 



tub p. tubercula jiubertatis. 



ly. typhlosole. 



u. c. unicellar glands. 



V. g. ventral ganglion. 



V. V. ventral vessel. 



V. sgl. ventral gland. 



w. "windings" of nephridial ducts. 



