274 SPOLTA ZEYLANICA. 



The prostatic pores, as mentioned above, are on segments XVI. 

 and XVIII. ; those of the same side are connected by an almost 

 straight longitudinal groove, and the two apertm^es and connecting 

 groove of each side have raised margins. Since the ridges bordering 

 the grooves on their inner side ajiproach each other closely in the 

 mid- ventral line, the appearance of the whole is that of a raised 

 square with rounded comers. 



The genital " papillse'' do not appear to be raised. Each is a 

 small inconspicuous circular area, mid-ventrally situated in the 

 course of furrows 7/8 and 8/9, with a smaller circular marking in its 

 centre. There was a similar very small area between and behind 

 the posterior prostatic apertures mid-ventrally in furrow 18/19. 



The setss had the normal relations for the species. The length 

 of the ordinary setse was 115-125, in shape they were of the 

 " Enchytrssus type," with a hooked proximal and almost straight, 

 tapering, and pointed distal end. 



The anterior portion of the animal was sectioned longitudinally ; 

 the woody material in the intestine and gizzards proved very 

 damaging to these parts of the sections, so that unfortunately the 

 spermathecse, in the region of the gizzards, were almost unrecog- 

 nizable. The follo^ving points may be briefly noted. 



Septum 7/8 was moderately thickened, septa 8/9-10/11 consider- 

 ably, 11/12 and 12/13 moderately ; allowing for the difference in 

 the numbering of the segments, this is practically the condition 

 given in the diagnosis of the species by Michaelsen (5). There was 

 a well-marked typhlosole. The first dorsal pore was in the furrow 4/5 

 (this would correspond to 5/6 in a normal specimen). 



The nephridia presented a curious appearance in sections. They 

 were mainly composed of circular aggregates, up to 22 [>' in diameter, 

 of small white spherical non-staining granules ; and it is presumably 

 to this material that the opaque white appearance of the nephridia 

 in the entire animal was due. Nuclei and strands of tissue were 

 present between the granular aggregations ; substituting these white 

 grains for oil, the appearance of a nephridium in section was not 

 unlike that of a group of fat cells. 



The seminal funnels, vesiculse seminales, male apertures, prostates, 

 gizzards, spermathecal apertures, and calciferous glands agreed in 

 structure and position (making the necessary allowance) with what 

 has been previously described for the species. 



References to Literature. 

 Beddard, F. E. — Preliminary Notice of South American Tubific- 



idse collected by Dr. Michaelsen, including the 



description of a branchiate form. Ann. Nat. 



Hist., XIII., 1894. 

 — — Naiden, Tubificiden und Terricolen. Ergebn. 



Hamburger Magalhaensischen Sammelreise 



I., No. 2, Hamburg, 1896. 



