PACIFIC COAST OMGOCHJ2TA. 



183 



REFERENCE TO LETTERS ON PLATES. 



a. c. fjl. anterior calcic gland. 



a. f. anterior fold of nephridium. 



a. nephr. anterior nephridia. 



a. spd. anterior spermdnct. 



atr. atrium. 



bil. body-wall. 



bl. blond vessel or capillaries. 



bl. s. blood sinus. 



br. bridge iu nephridinm. 



buc. buccal cavity. 



c. clusters of lunate cells. 



c. c. columnar cells. 



c. ep. ccelomio epithelium. 



c. gl. calciferous glands. 



eh. discbarge 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 sperm-funnels. 



c. t. connective tissue. 

 CM. 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. 



gizz. gizzard. 



h. heart. 



hy. hypodermis. 



i. s. yr. intersegmental groove. 



I. c. large cells. 



I. m. longitudinal muscles. 



VI. muscles. 



m. air. muscular atrium. 



mes. mesenteric tissue. 



m. pr. muscular prostate. 



n. nephridia. 



n. c. nerve cells. 



ne. nerve ganglion. 



UPC. neck of nephridium. 



neph. nephridium. 



neph . p. nephropore . 



tea. cesophagus. 



ov. ovary. 



ovd. oviduct. 



org. sense organ. 



p. c. gl. posterior "alciferous diverticulum. 



p./. posterior fold, nephridium. 



pAx. pharynx. 



p. neph. posterior nephridia. 



pr. prostate. 



p. spd. posterior siiermduct. 



pr. sto. prostomium. 



ps. penial set.i\ 



pri. peritoneum. 



se. secreted matter. 



s. i7il. sacculated intestine. 



Sep. gl. septal gland. 



8ep. septum. 



«. gl. suprapharyngeal glands. 



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



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



spc. sperm-cells. 



spd. spermduct. 



spgn. spermatogonia. 



spr. spur of nephridium. 



s. ps. sac with penial setaj. 



sp. s. sperm-sacs. 



s. ph. sgl. subpharyngeal glands. 



spih. spermatheca. 



spth. p. spermathecal pore. 



t. testes. 



I. m. transverse muscles. 



irb. trabecula. 



Ih. spd. thicker part of spermduct. 



Ut. tubular intestine. 



tub. p. tubercula pubertatis. 



ty. typhlosole. 



M. c. unicellular glands. 



V. g. Central ganglion. 



V. V. ventral vessel. 



V. sgl. ventral gland. 



w. " windings " of nephridial ducts. 



