EXPLANATION OF PLATE VI. 
Figs. I, 3 and 4 drawn with Zeiss’s Abbe’s drawing apparatus. 
Fig. 1.—Enchytraeus barkudensis ; longitudinal section of anterior end, showing ever- 
ted pharynx; x 116. 
buc. cav., floor of buccal cavity everted; c. g., cerebral ganglion; m. ph., 
muscular strands attached to pharyngeal ‘sucker’; oes., oesophagus; Ph., 
pharyngeal ‘sucker’; p7., prostomium; sal., salivary gland; v. n. c., com- 
mencement of ventral nerve cord. 
2.—The same; two nephridia, from an entire specimen in cedar oil; a., from 
segment ix; b., from a postgenital segment. 
3.—Fridericia carmichaeli, section of anterior end a little to one side of median 
Inne > S 30166), 
buc. cav., folded epithelium in floor of buccal cavity; c. g., cerebral gang- 
lion; d. v., dorsal vessel (or one of the two branches into which its anterior 
end divides) ; m., muscular band passing obliquely downwards from dorsal 
aspect of pharynx to ventral body-wall; oes., oesophagus ; bh., the cup- 
shaped pharynx; pr., prostomium; sal., salivary gland; s. o. g., suboeso- 
phageal ganglion. 
4.—The same; horizontal section through dorsal portion of segments vi—xi, 
showing aggregations of coelomic corpuscles with setae and fragments of 
setae imbedded. The setae catch the eye much more strikingly in the 
actual specimen, where they are bright and refractile. The small clear 
circles, e.g. in segment vill, are setae cut transversely; the nuclei of the 
corpuscles are shown either black or with dotted interior. Constituents of 
body-wall not separately shown; x 140. 
d. v., dorsal vessel; sept. gl., septal gland of segment vi; set., mass of coelo- 
mic corpuscles with setae and setal fragments,—similar masses are seen in 
viii and ix; sp., sperm morulae and spermatozoa; 10/II, septum IO/II; vi 
—xi, the corresponding segments. 
5.—The same; penial bulb in transverse section; x 210. 
b., penial bulb; p., penial lumen; sér., strands of muscular or connective 
tissue attaching bulb and penial tube to lateral body-wall; v. d., termina- 
tion of vas deferens; « , male aperture. 
