CALIFORNIA EUDRILIDjE. 61 



8"!. Oiif of the sperm brills more highly magnified. Of these never more thdu one oconpies the same chamber. 



SOA. A somewhat diagramatic view of the anterior somite, composed from several sectious, in order to show the lo- 

 cation of the organs, their relative size, etc. cl. clitellum. I>r. brain, c. lower commissure of ventral ganglion. 

 phx. pharynx. sLql. salivary glands, re. oesophagus. ;/:. gizzard. (./. tubular intestine, s. /'. sacculated 

 intestine, iiph. cross section of the anterior nephridia in somites ii, iii, iv. The other nephridia are not 

 shown. sph. spermatheca>. xpa. sperm-sacs. /. .sy-s. lobed sperm-sacs in xii. ov. ovary, ovil. oviduct, 

 c. /■. ciliated rosettes, up. d. spermduct; the couuection with the ciliated rosettes not shown. 5 male 

 pore. pr. prostate, p. s. sacs with peuial setae opeuiug in the same pore, but more ventrally than the pros- 

 tate, e. the place where the spermduct enters the prostate. 



8013. The body opened from above and the interior organs exposed to view. K partially diagraniatic view. The 

 dotted lines indicate the organs covered by others, and which could not be seen except by removal of overly- 

 ing organs. Letters indicate as in the preceding (igure. 



87A. Diagramatic longitudinal section of gizzard. 



87B. Diagramatic transverse section of gizzard, to show its compressed shape. 



88. A part of the epithelium and muscular layer of the gizzard seen in longitudinal section, r/,. epidermis, i pi . 



epithelium. /. wi. longitudinal muscles. 



89. A transverse section of the gizzard. (Letters as in fig. 88.) 



!)0. A transverse section of the alimentary canal adjoining the gizzard posteriorly, t. m. transvei-se muscles. 



/. m. longitudinal muscles, ep. epithelium cells, chi/. supposed chylus chambers. <:. r. chloragogic cells. 



f//. glands. M. bloodvessels. 

 ill. The same in longitudinal section. (Letters as in fig. 90.) 



92. Surface view of the same, showing the arrangement of the chylus chambers. (Camera drawing.) 

 93A. Section of a part of the dorsal vessel in somite xvi. m. mnscnlar layer, ht. blood clot. c. r. chloragogic 



cells. 

 93B. Section through the alimentary canal in somite xiv. 

 94A. One of the testes. 

 94B. Right testis in cross section. 

 94C. Left testis in the same somite xi in cross section. 



95. Ovary. 



96. Section of the body in somite x, through testes. 



97. Section of the body in somite x through the sperm funnels, very close to the septum. 



98. Section through somite xi. 



99. Section through somite xii. .«/w. x. sperm sac in x. xpn. xi. sperm sac in xi. xps. xii. sperm sac in xii. 



7)1. longitudinal muscles connecting various organs with the body-wall. ('. intestine. (/. v. dorsal vessel. 

 V. V. ventral vessel, h. hearts. (. testes, i'. gl. ventral ganglion, s. septum. 



100. Part of the sperm-sac. coc. parasitic ooccidifp. 



101. One of the sperm-sacs separated. 



I0'2. Oviduct a and h, front view. <•. side view of an abnormal oviduct with two, instead of one, upper lips. ii.l. 



upper lip. .«. septum, m. muscular band. 

 IO.')A. Cross section of the body-wall through the male-pore, showing sections of prostate and penial seta>. pr. gl. 



sectious of glandular part of prostate, pr. m. muscular part of prostate. /). s. penial setiP and their sacs. 



V. vascular layer of the body-wall. I. m. longitudinal layer of muscles, t. m. transverse layer of muscles. 



c. (jl. glandular layer of clitellum. h. hypodermis. g. ganglion, v. p. ventral part of the worm, 

 103B. Detail of former, nuclei in the muscular part of the prostate. 

 104. One of the ciliated funnels freed from the attached sperm-sacs. 



I0.">. Diagramatic section through prostate, showing relative size of spermducts where they join the prostate. 

 RMi. Diagramatic representation of the j^rostate, showing its natural position when the body-wall is spread out. 



pr. glandular prostate, spil. spermduct. p. .i. penis-sacs. m. pr. muscular prostate. c. /. vascular 



layer, i'. ventral side. 



107. Detail of the above, to show junction of spermduct and prostate. 



108. Cross section of prostate, hi. v. blood vessels, o. gl. outer glands or prostate proper. /. gl. inner glanil 



or atrium. 



109. Detail of the former, showing the way the outer glands open into the atrium between the inner cell layer. 



110. 111, 112, 113. Successive sections through prostate and spermduct, illustrating the junction of the two. In 



the first figure the spermducts have not yet entered the muscular part of the prostate. In the three follow- 

 ing figures this junction is progressing, and finally almost accomplished. /. m. I. inner epithelium of the 

 muscular part of the prostate, pr. glandular prostate. .'<p(l. spermduct. hi. v. blood vssels. m. I. 

 muscular layer of the spermduct. In 110 the spermduct has beeu sectioned twice, as it is here convoluted. 

 114. Cross section through the body-wall in somite xix. i'. I. vascular layer. I. m. longitudinal layer of muscles. 

 ^ m. transverse muscles, h. hypodermis. 



