270 SPOLIA ZEYLANICA, 



the ampulla Avas bent on itself, and the diverticulum was about 2/5 

 as long as the ampulla ; on the right side the ampulla was smaller 

 and straight, and the diverticulum was almost as long as the 

 ampulla . 



Megascolex sextus, sp. nov. 

 (Plate II., Figs. 13 and 14.) 

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



External Chakacters. — Length 4 inches ; breadth 2 mm. ; 

 colour brown dorsally, with transverse segmentally repeated whitish 

 markings along the lines of the setae, light gray ventrally, the 

 anterior end darker. Segments 114. 



Prostomium epilobous 2/3 limited posteriorly however by a faint 

 transverse marking between the hinder ends of the longitudinal 

 grooves. The first segment is cleft in the middle line ventrally. 



The first dorsal pore is situated in segment V., near the interseg- 

 mental furrow 5/6 ; and all the dorsal pores in the anterior part of 

 the body are in front of the furrows. 



The clitellum extends from 1/2 XIV.-XVI. = 2 1/2 ; the body is 

 slightly swollen here, but otherwise there is no notable change in the 

 character of the skin ; the setae are quite obvious on all the clitellar 

 segments. 



The 7nale apertures are on papillae on segment XVIII. , 1/4 of the 

 circumference apart from each other ; no setae occur in the interval 

 I^etween the apertures. 



The spermathecal apertures are in the furrows 6/7 and 7/8, and are 

 nearly half the circumference apart. 



There are two pairs of genital papillse. One pair, in furrow 17/18, 

 are small whitish elevations , slightly internal to the line of the male 

 apertures. The others, in fm-row 9/10, are a pair of conspicuous? 

 oval papillae, their long axis transversely placed, Avith eye -like 

 markings m the centre ; they are situated internal to the line of 

 the spermathecal apertures, a little more than 1/5 of the circum- 

 ference apart. 



The setsa are disposed in rings, which dorsally are almost closed ; 

 ventrally aa = 2 ah posteriorly, or in front of the clitellum often = 

 2,1 12 ah. The setae are at approximately the same distance apart at 

 all parts of the chain. Number of setae: ca. 36/V. , ca. 40 /IX.. 

 36/XV., 50/XIX., and posteriorly 50. 



Internal Anatomy. — Septa 9/10-13/14 are shghtly thickened. 



The gizzard is in segment VII. The intestine begins in XIV. 

 The last heart is in XIII. The excretory system consists of micro- 

 nephridia. 



The testes and seminal funnels are in segments X. and XI. , enclosed 

 in testicular sacs Avhich are connected dorsally over the oesophagus 

 in each segment. The funnels are large, brilliantly glancing, and 

 iridescent. 



