■2()H SPOLTA ZEYLANICA. 



(the lines of the setse converge inwards somewhat at this region). 

 The other papilla is shghtly larger than the first ; it is situated on 

 segment XII., encroaching however on the neighbouring segments 

 (for about half the length of XIII. and one-third the length of XI.) ; 

 it has a very faint circular elevation at its centre ; transversely it 

 extends from a point between the setal lines a and h on one side to a 

 corresponding point on the other side. 



The setal rings are broken both dorsally and ventrally. Dorsally 

 zz^=2 yz in the anterior, = 4 yz in the posterior part of the body ; 

 ventrally aa = 3 ab in front of clitellum, = 4 ah nearly behind 

 clitellum. In front of the clitellum all the setse are arranged in 

 regular longitudinal lines, in 6 pairs on each side, or 24 setse per 

 segment ; ah < he ; cd = ah. In the hinder part of the specimen the 

 setse were frequently difficult of observation ; while a and b,y and z, 

 were throughout arranged in definite longitudinal lines, the more 

 laterally placed setse appeared to be more irregularly distributed ; 

 the number of setse per segment was, at least approximately, the 

 same (24) . The setse of segments II.-VII. were moderately enlarged . 



Internal Anatomy. Septa 8/9-10/1 1 are moderately thickened . 



The gizzard is in segment VI. There are no intestinal caeca (as far 

 back as segment XL). 



The nephridial system consists of micronephridia. 



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



The vesiculse seminales, in XI. and XII., are much lobulated, and 

 extend unbroken across the middle line dorsally. The prostates are 

 small and compact, the duct thin and straight. 



The spermathecse lie in segment IX., with their apertures in 

 furrow 8/9. The ampulla has an inverted pyriform shape ; the 

 duct is moderately thick, and nearly as long as the ampulla. The 

 diverticulum is very long, and extends inwards as far as the middle 

 line ; it is bent on itself at the junction of its inner and middle 

 thirds , the imier third thus lying alongside the rest ; the diverticulum 

 is of equal thickness throughout, being about as wide as the duct ; 

 its length, when straightened, is about three times that of ampulla 

 and duct together (fig. 10). 



Genital setse are present, in length 7 '25 mm., in breadth "022 mm. 

 The distal extremity is slightly broadened and flattened, and tapers 

 to a blunt point. The last -6- -7 mm. of its length is ornamented 

 with small triangular teeth, irregularly distributed all round the 

 circumference of the shaft. 



Megascolex quintits, sp. nov. 

 (Plate 11., Figs. 11 and 12.) 

 A single specimen. From the same locality as the last. 

 External Characters. — Length 2 1/2 inches : breadth 2 1/2 mm. 

 colour light gray ; segments 139. The specimen was contracted at 

 the clitellar region. 



