26o DISCOVERY REPORTS 



(ii) The almost absolute constancy of the number 3 for the setae in all bundles — 

 which (though given by Ude, for example, as the usual number) seems not ordinarily to 

 be so definitely fixed in E. buchholzi; Michaelsen (in examples of this species which may 

 constitute a distinct variety) found 3 in the preclitellar ventral bundles only, and else- 

 where always 2 ; Vejdovsky's original account (1879) gi^^^ 2, 3 or 4 per bundle, Southern 

 (1906) usually 3, often 2, rarely 4. 



(iii) The shape of the funnel in the worms here described appears to be quite 

 characteristic; I cannot recall that it has been described in any other Enchytraeid. 



(iv) One of the chief features of E. buchholzi, mentioned in all descriptions, is the 

 constitution of the large chloragogen cells, which are filled with large refractile oily 

 globules. In sections, of course, the oil drops would have been dissolved by the xylol 

 used in preparation, and would be represented by vacuoles ; such vacuoles I have never 

 seen in any of the several series of sections which I prepared, nor were any oil globules 

 visible in the cells in whole mounts in cedar oil, nor in teased specimens. On the other 

 hand, I have seen such vacuoles, answering exactly to Vejdovsky's description and figure 

 (Vejdovsky, 1879) of those of E. buchholzi, in E. colpiies {v. post), a species which, how- 

 ever, cannot be confused with E. buchholzi. 



As less important points may be mentioned : (v) the fact that in E. atistralis the dorsal 

 vessel originates within the clitellar segments, in E. buchholzi behind them; (vi) that the 

 extent of the glands round the spermathecal duct is greater in the present specimens than 

 in E. buchholzi; and (vii) that the salivary glands appear to differ considerably from 

 those of E. buchholzi as illustrated and described by Vejdovsky, though it is possibly 

 allowable to suspect some degree of schematization in this author's figure. 



Enchytraeus colpites, sp.n. (Figs. 12, 13). 



II. i. 27. Shore of Bay of Isles, South Georgia; from Ulva sp., between tide marks. Several 

 specimens; along with Marionina aestuum. 



Length 15-16 mm. ; diameter o-8 mm., or i mm. at the clitellum. Segments 37, 38, 39. 



Prostomium blunt, rounded. 



Setae lumbricilline in form (with double curve); some, however, almost or quite 

 straight at the distal end (enchytraeine). The ventral bundles contain (4) 5, 6 setae both 

 in front of and behind the cUtellum, the lateral (2, 3, 4) 5 (6) in front and (4) 5 (6, 7) 

 behind. 



The clitellum includes segments xii-xiii, and is absent ventrally. 



There are no rows of large gland cells with deeply staining contents in the epidermis, 

 but in each segment are to be seen two bands of small, scattered, deeply staining cells, 

 one in front of and one behind the setal zone. 



The coelomic corpuscles are spindle-shaped or oval, 25-36/^ in long measurement; 

 they have not all the same appearance, some being granular and others more homo- 

 geneous in constitution. 



The septal glands are large, and that of segment vi (in relation to septum 6/7) bulges 

 backwards extensively into segment vii, so as to reach the hinder end of the segment. 



