PACIFIC COAST OLKjlH II.ETA. 



195 



REFERENCE TO LETTERS ON PLATES. 



a. c. ijl. anterior calcic glaud. 



a./, anterior fold of nephridium. 



a. nephr. auterior nephridia. 



a. spd. anterior spermduct 



atr. atrium. 



bd. body- wall. 



bl. blood vessel or capillaries. 



hi. s. blood sinus. 



hr. bridge iu nephridium. 



hue. buccal cavity. 



c. clusters of lunate cells. 



c. c. oolumuai' cells. 



c. ep. coelomic epithelium. 



c. gl. calciferous glands. 



ch. discharge chambers of glands. 



chlo. chloragogeu cells. 



cit. ciliated epithelium. 



cl. c. clitellar cells. 



cl. clitellum. 



c. m. circular muscles. 



com. commissures. 



c. r. ailiated rosettes or sperm-fuuuels. 



c. t. connective tissue. 

 <•!/. cuticle. 



d. gl. dark staining glands. 

 d. pr. dorsal pore. 



d. f. dorsal vessel. 



':. epithelial cells. 



epi. epithelium. 



gl. glands. 



gl. c. unicellar glands. 



gl. pr. glandular part of prostate. 



gizz. gizzard. 



h. heart. 



hi/, hypodermis. 



1. s. gr. intersegmental groove. 



I. c. large cells. 



I. m. longitudinal muscles. 



m. muscles. 



in. air. muscular atrium. 



mes. mesenteric tissue 



m. pr. muscular prostate. 



n. nephridia. 



n. c. nerve cells. 



ne. nerve ganglion. 



nee. neck of nephridium. 



neph. nephridium. 



7ieph. p. uephropore. 



ces. oesophagus. 



01". ovary. 



ovd. oviduct. 



org. sense organ. 



p. c. gt. posterior calciferous diverticulum. 



p.f. posterior fold, nephridium. 



phx. pharynx. 



p. neph. posterior nephridia. 



pr. prostate. 



p. upd. posterior spermduct. 



pr. sto. prostomium. 



ps. penial setic. 



prt. peritoneum. 



ne. secreted matter. 



». int. sacculated intestine. 



Sep. gl. septal gland. 



sep. septum. 



s. gl. suprapharyngeal glands. 



s. org h. 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 setae. 



sp. s. sperm-sacs. 



s. ph. sgl. subpharyngeal glands. 



spth. spermatheca. 



spth. p. spermatheeal pore. 



t. testes. 



(. m. transverse muscles. 



trb. trabecula. 



Ih. spd. thicker part of spermduct. 



III. tubular intestine. 



tub p. tubercula pubertatis. 



ty. typhlosole. 



«. c. unicellar glands. 



V. g. ventral ganglion. 



I'. V. ventral vessel. 



V. sgl. ventral gland. 



w. "windings" of nephridial ducts. 



