502 Di". L. Cognetti de Martiis on the 



veisely striped ampulla, which is somewhat broader distally 

 than at the rounded proximal end, and of an abruptly- 

 separated duct, about a third as long and as broad as the 

 ampulla. Into the proximal end of this duct opens a small 

 diverticulum, which contains some (4-5) oval seminal 

 chambeis. The diverticulum is enclosed in the duct-wall, 

 but projects above its surface (PI. XIII. fig. 10). 



Hah. Coorloon {Mr. Shungara Narayana^ 23. vi. 1910). 



Tiie diverticulum of the s[)ermathecoe enclosed in the duct- 

 wall is an important feature of this new species, which also 

 appears in Megascolex cceruleus, R. Tempi. *, and M. hender- 

 soni, Mich, t, but M. ratus is distinguished from these two 

 species by well-detined characters, viz., papilbe, number and 

 shape of the sperm-sacs, &c. 



Fam. Glossoscolecidae. 

 Subfam. MicROCH^TiNjs. 

 GlypUdrilus annandalei, Mich. (PI. XIII. figs. 11 & 12.) 

 Glyphidrilun annandalei, Michaelsen, (13) p. 101. 



Nine mature or nearly mature specimens, six of them com- 

 plete and three incomplete young specimens. 



External characters. — The longest, but not fully mature, 

 specimen measures 165 mm. in length, and 2-5-3 mm. in 

 greatest (at the x. segment and clitellum %) or 1 mm. in 

 smallest thickness (at the posterior end). This specimen is 

 composed of 205 segments, but the tail is wanting. Other 

 mature or nearly mature specimens: length 90-128 mm., 

 greatest thickness 3*5-4 mm., smallest thickness 1-1"5 mm. ; 

 number of segments 125 (for a length of 90 mm.) to 322 (for 

 a lengtli of 128 mm.). 



The shape of the body is very similar to that of Criodriliis 

 and Alma. The anterior region is conical and provided at 

 the end with a broad and short prostomium. 



In some specimens there is a small transverse furrow on 

 the dorsal surface of the prostomium, which determines the 

 head prolobous. 



Segments i.-iii. are short, iv.-xii. are the longest of all, 

 and appear more or less distinctly triannulated. 



In the mature specimens the body is somewhat depressed 

 between the xxv. and xxxv. segments, and tiiis depression 

 extends often to all the clitellar region. 



* See Michaelsen, (7) p. 232, ubi liter. 



t See Michaelsen, (11) p. 162, and (12) p. 184, pi. xiii. fig. 23. 



\ The fin-like lateral plates are not included. 



