PACIKIC COAST or.UiOOH/KTA. 



183 



KKFEKKNCE TO LETTEKS ON PLATES. 



a. c. ijl. anterior caU-ic gland. 



a.f. anterior fold of uephridium. 



a. nephr. anterior uephridia. 



a. upd. anterior spermduct. 



atr. atrium. 



bd. body-wall. 



U. blood vessel or capillaries. 



6^ s. blood sinus. 



br. bridge in nephridiiini. 



buc. buccal cavity. 



c. clusters of lunate cells. 



c. c. columnar cells. 



e. ep. coelomic epithelium. 



c. gl. calciferous glands. 



ch. discharge chambers of glands. 



chlo. chloragogen cells. 



cil. ciliated epithelium. 



cl. c. clitellar cells. 



cl. clitellum. 



c. m. circular muscles. 



com. commissures. 



c. r. ciliated rosettes or sperui-funuels. 



c. I. connective tissiie. 

 cu. cuticle. 



d. gl. dark staining glands. 

 d.pr. dorsal pore. 



d. V. dorsal vessel. 



e. epithelial cells. 

 ept. epithelium. 

 gl. glands. 



gl. c. unicellar glands. 



gl. pr. glandular part of prostate. 



ghz. gizzard. 



k. heart. 



hy. hypodermis. 



i. s. gr. intersegmental groove. 



I. c. large cells. 



I. m. longitudinal muscles. 

 m. muscles. 



m. air. muscular atiium. 

 ■mes. mesenteric tissue. 

 m. pr. muscular prostate. 



II. nephridia. 



n. c. nerve cells. 

 ne. nerve ganglion. 



71IC. neck of uephridium. 



neph. uephridium. 



neph. p. uephropore. 



(es. oesophagus. 



ov. ovary. 



ovd. oviduct. 



org. sense organ. 



l>. c. gl. posterior -alciferous diverticulum. 



p.f. posterior fold, uephridinni. 



phx. pharynx. 



p. neph. posterior uephridia. 



pr. prostate. 



p. spd. posterior spermduct. 



pr. slo. prostomium. 



pa. penial seta>. 



prl. peritoneum. 



se. secreted matter. 



«. int. sacculated intestine. 



seji. gl. septal gland. 



8ep. septum. 



». gl. suprapharyngeal glands. 



s. org. h. sense organ cells in equatoreal zone. 



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



spc. sperm-cells. 



spd. spermduct. 



spgn. spermatogonia. 



spr. spur of uephridium. 



s. ps. sac with penial setae. 



sp. s. sperm-sacs. 



s. ph. sgl. subpharyngeal glands. 



spth. spermatheca. 



splh. p. spermathecal pore. 



I. testes. 



(. m. transverse muscles. 



Irh. trabecula. 



Ih. spd. thicker part of spermduct. 



ill. tubular intestine. 



tub. p. tubercula pubertatis. 



iy. typhlosole. 



M. (,•. unicellular glands. 



V. g. ventral ganglion. 



V. V. ventral vessel. 



V. Kgl. ventral gland. 



to. " windings " of nephridial ducts. 



