234 Memoirs of the Indian Museum. [Vol. VII, 



The gizzard is in front of septum 7/8, relatively large, globular, but not very firm. 

 There is a large calciferous gland on each side in xv, projecting backwards also into 

 xvi ; each is divided into an anterior and a posterior lobe, and on the whole is kidney- 

 shaped; the posterior ends approach each other, and are at a higher level in the seg- 

 ment than the anterior. The intestine begins in xvii or xviii. 



The last heart was in segment xiii twice, in xii once. 



The micronephridia are numerous and small. 



Testes and funnels are free in segments x and xi ; the funnels are of large size, 

 or at least the iridescent mass which adheres to them is. The seminal vesicles are in 

 segments ix and xii ; they are slightly lobulated ; both pairs may be of moderate size, 

 or those in ix may be much larger than the posterior pair. 



The prostates, in segments xvii and xix, are relatively large, and bulge apart the 

 septa of the containing segments. The glandular part is a rather thick and opaque 

 tube, closely coiled ; the duct is much thinner, shiny, passing inwards with a bend or 

 loop at its origin, or with a wavy course. 



Ovaries and funnels occupy the usual situation ; there were in one specimen 

 minute empty ovisacs in segment xiv. 



The spermathecal sac has a very stout duct which is not sharply marked off ; the 

 diverticulum is of considerable relative size, and has a very thick stalk ; it arises from 

 the spermathecal duct where the latter enters the body wall (fig. 36). So much can 

 be said of all three specimens ; but all three differ in details. The ampulla may be 

 irregular in shape, or simply ovoid ; the diverticulum may be almost as long as the 

 main sac, or considerably shorter; it may be quite simple, or it may be slightly lobed, 

 and on microscopical examination a few small seminal chambers may be distinguish- 

 able. 



The penial setae (fig. 37) are in length 1*5 mm., and 40/x thick in the middle; 

 the tip is slightly hooked, and rather hollowed or spoon-like on its concave side. The 

 ornamentation consists of a large number of close-set rings of fine spines, which extend 

 nearly half way along the shaft. 



The copulatory setae are *8 mm. long, and 26 ■< thick at their middle. They are 

 slightly bowed, and the tip is pointed ; the distal portion of the shaft is marked by a 

 number of scar-like depressions, with a general semicircular shape, and sharply defined, 

 elevated and notched proximal margin (fig. 38). 



Remarks :— In a number of details the present form remarkably resembles the 

 last. The penial and copulatory setae however are very characteristic. There is no 

 doubt however that this and the last are closely related species. 



Octochaetus montanus, sp. nov. 

 Plate X, figs. 39, 40. 



Panchgani. W. Ghats, 12 miles from Mahableshwar ; alt. 4,000 ft. 5-vii-1917. B. Prashad. 

 A single specimen. 



External Characters : — Length 60 mm. ; thickness 3*5 mm. Colour buff, non-pig- 

 mented, slightly blotchy in places. Segments 158. 



