1 9 14- J J- Stephenson : Oligochaeta from Northern India. 339 



Length 50 mm. ; breadth i\ mm. ; colour mottled grey , the 

 clitellum being whiter than the rest. Segments 8r. 



Prostomium epilobous \. 



The setae are widely paired : ab=^aa=^=^hc=^cd. 



Clitellum Jxiii— ^xvii=4^ (according to sections the clitellum 

 includes the whole of xiii=4^). 



Nephridial apertures easils' visible, especially conspicuous on 

 the clitellum ; in the lateral line of the body, just below the level 

 of setae c, intersegmental. 



No genital apertures visible. 



The internal anatomy was investigated by sections in a frontal 

 plane. Though the state of preservation was apparently, as noted 

 above, poor, the sections leave nothing to be desired from the 

 point of view of the general anatomy of the specimen. 



The first septum is .1 ; it and il are thin, while y — if are all 

 moderately thickened. 



The gizzard is rudimentary, and is represented only b}' a 

 thickening of the circular muscular coat of the oesophagus in 

 segment v; though this thickening may be called considerable, it 

 does not cause any swelling of the tube as a whole. 



Septal glands are present in segments v-viii ; in these seg- 

 ments the}^ are paired structures, those in viii being smaller than 

 the rest. In front of septum I the series of glands of each side 

 unites dorsally over the pharynx with that of the other side. 



Throughout segments ix-xiii the oesophagus is fairly broad, 

 and though not segmentally constricted seems here to have a 

 structure which represents the calcareous glands of other forms. 

 In the ventral portion of the tube the lumen is narrow, and the 

 walls consist of a scaffolding or framework of a spongy appearance, 

 carrying very numerous and large blood vessels ; dorsally the 

 lumen is wide, though the epithelium is thrown into conspicuous 

 folds. Had the animal been large enough for dissection, the 

 condition would probably have been capable of description in the 

 same wa^^ as for Eutyphoeus bishambari and E. waltoni (v. post). 



Hearts are present in segments x, xi and xii ; in front of this 

 the commissural vessels are quite small. 



The excretory system is meganephric ; each nephridium has a 

 large end-sac. 



Testes and funnels are free, in segments x and xi. The vesi- 

 culae seminales are paired, small, and situated in xi and xii. The 

 prostates are a single pair, of small size, extending over no more 

 than a segment, and opening behind on segment xvii at the 

 posterior border of the clitellum, close to seta b and on its outer 

 side. The vasa deferentia of each side run backwards close 

 together, and curve round the outer side of the prostatic duct, 

 becoming first posterior and then internal to the latter ; the two 

 ducts of the same side unite in the substance of the bod3'^-wall, 

 and finally, reaching the surface, open at the same level as the 

 prostatic ducts, but on the inner side of seta b. Owing to the sec- 

 tions being in the frontal plane, the setae of segment xvii are cut 



