266 SPOLIA ZEYLAlsriCA. 



Numbers of small separate micronephridia are present. 



The male funnels are free, in segments X. and XI. The vesiculse 

 seminales, in XI. and XII., are lobulated masses surrounding the 

 alimentary canal. The prostates are of moderate size, simple 

 rounded masses, not lobulated, with stout white ducts ; the whole 

 resembling a mushroom. No penial setse observed. 



The spermathecse are one pair, opening between VIII. and IX. ; 

 spindle-shaped, with a short thick duct, and a finger-shaped diverti- 

 culum as long as the ampulla, attached to the duct at the base of the 

 ampulla. 



Megascolex bifoveatus, sp. nov. 



(Plate II., Fig. 9.) 



Two specimens. From the same locality as the last. 



External Characters. — The specimen examined was incomplete 

 at its hinder end ; in length it measured 1 2/3 inch ; breadth, max. 

 3 mm., but narrower in front of the clitellum ; the anterior end 

 (first few segments) tapering. Colour fight gray, with a pinkish 

 tinge on dorsal surface anteriorly. Segments > 85 (after dissecting the 

 incomplete specimen I unfortunately, on subsequently meetmg with 

 a complete specimen, omitted to count the segments of the latter). 



Prostomium epilobous 3/5-3/4. 



First dorsal pore in intersegmental furrow 5/6. 



Clitellum embracing segments XIV.-XVI. = 3 ; setse present as 

 regular rings on clitellar segments. 



Male apertures on segment XVIII. as small pits, surrounded by 

 small oval areas which however are not elevated. The apertures are 

 1/7 of the circumference apart, approximately in the fine of seta d ; 

 but no setse are present in the interval between the apertures. 



Female aperture indistinct, apparently mid- ventral on segment 

 XIV. 



Spermathecal apertures in furrows 7/8 and 8/9. 



Genital marks are present as a pair of conspicuous oval pits, with 

 the long axis transversely placed in furrow 19/20, the centre of each 

 situated slightly internal to the line of the male apertures. 



The setge form a ring in each segment, which is almost closed both 

 dorsally and ventrally. Dorsally the interval is irregular ; zz=: 2yz 

 approximately. Ventrally aa = 2 ab regularly. The setse on the 

 ventral side are placed somewhat closer together, in the anterior 

 part of the body at least, than on the dorsal side. Number of setse 

 39/V., 40/IX., ca. 41/XIX., 42/XXVIII. 



Internal Anatomy. — The first distinguishable septum is 5/6 ; 

 6/7-8/9 are somewhat thickened, 9/10-13/14 considerably so, 14/15 

 and 15/16 moderately. 



The gizzard, situated in segment VII., is not large nor very hard. 

 There are no calciferous glands. The intestine begins in XV. 



The last heart is in segment XIII. 



Very numerous small micronephridia are present in each segment. 



