256 Records of the Indian Museum. [Vol. X, 



Bedd., from Ceylon (cf. Michaelsen, 7), the distribution of which 

 is circummundane in the tropics ; and to Beddard's species lacca- 

 dt'vensis, which occurs in both the Laccadive and Maldive Islands 

 (3)- 



Criodrilus lacuunit Hoffmstr. 



Shore at Satpara, Puri district, Orissa, from fisherman; 

 14-111-1914. Very numerous specimens, none showing external marks 

 of maturity. 



Length average 80, maximum 100 mm.; breadth 2 mm. 

 Colour an equable grey. Segments ca. 240. Prostomium zygolo- 

 bous. No dorsal pores. 



The body from about segment ix onwards is somewhat four- 

 cornered; in the posterior fourth of the body, the dorsal surface 

 is concave, thus presenting a shallow longitudinal groove. The 

 posterior end is sharply pointed. The anus is dorsal, and forms a 

 longitudinal slit with whitish margins, the posterior end of which 

 does not reach the pointed posterior end of the body. The num- 

 ber of segments over which the anus extends is difficult to count, 

 as they are small, and, at the end, not completely differentiated; 

 but about 6 or 7 can be recognized and counted, as well as a small 

 undifferentiated zone posteriorly. The segments after the first 

 three are triannulate, soon becoming four- and five-ringed by the 

 subdivision of one or more of the primary rings ; posteriorly the 

 segments are again three-ringed. 



The setal intervals vary somewhat ; the relations may roughly 

 be expressed thus : — aa = 2-2lab = be = 2-2 Jc^ = |— f a^. In the 

 anterior part of the body aa = i^ab. The setae are ornamented 

 towards the tip, but much less markedly than is shown by 

 Vejdovsky in his figure (11). 



The first septum is i ; thereafter the septa gradually increase 

 in thickness, being moderately thick at f , and so continuing to yf- 

 Behind this the thickness rapidly decreases again, and if and those 

 behind are of the usual attenuated type. 



A rudimentar}^ gizzard was present in segments xiii-xiv in one 

 specimen dissected; in the other it was questionable whether 

 there was anything which could be called a gizzard. 



The last heart is in segment xi. Nephridia begin in xii (xi 

 one side of one specimen). 



The testes are situated in x and xi ; one funnel was seen in x* 

 The four pairs of seminal vesicles depend, two anteriorly (i.e. for- 

 wards from the posterior wall of the segment) into ix and x, and 

 two posteriorly into xi and xii. Ovaries and ovarian funnels were 

 seen in xiii and small ovisacs depending backwards into xiv. 



Pontodrilus ephippiger, Rosa. 



In damp mud under stones at edge of Chilka Lake at Ganta- 

 sila, Ganjam district; 27-xii-i9i3; three specimens, two being 

 fully mature. 



