336 Kecords of the Indian Museum. [Vol. X, 



The worms are 4 mm. in length, and of an opaque white colour ; 

 the anterior end is narrower than the posterior, and gently taper- 

 ing. The prostomium is rounded ; segments 35 ; no head-pore or 

 dorsal pores. The worms are of a sluggish habit. 



The setae are two per bundle regularly throughout the body in 

 both dorsal and ventral bundles. All are of the same type ; the 

 shaft is straight, tapering and bluntly or even moderately sharply 

 pointed distally, with a hook at the proximal end which is curved 

 in an arc of about 90° ; the setae are frequently broadest about 

 the middle of their length. In the posterior half of the body they 

 are about 53M long, and 3'5 — 4/^ broad ; anteriorly they are rather 

 smaller, 40-46/^ long- 



Coelomic corpuscles are very numerous, and float freely in the 

 body-cavity, in greater numbers towards the anterior end. They 

 are small flat discs, oval or pear-shaped, or not infrequently 

 spindle shaped. In diameter the more nearly circular ones mea- 

 sure lo/s while the length of the spindle-shaped corpuscles may 

 be 15/^. They show nuclei in stained preparations; and after 

 Heidenhain's iron-haematoxylin, a number of black granules of 

 relatively large size. In fresh specimens the corpuscles appear to 

 originate from occasional strands passing between alimentary tube 

 and body- wall, and from the septa in the anterior part of the 

 body ; this is confirmed in stained and sectioned preparations, in 

 which a number of cells with the characters of the corpuscles are 

 seen massed together on the anterior septa. 



The buccal cavity is tubular and extends through segments 

 i and ii. The pharynx, in segment iii, is distinguished by the thicken- 

 ing of its dorsal wall ; this is composed of a high epithelium very 

 definitely limited in extent both anteriorly and posteriorly, with 

 the nuclei of the cells situated near their bases. The ventral wall 

 of the pharynx is not thickened, its epithelium being almost 

 cubical. A lining of cuticle extends throughout the buccal cavity 

 and over the ventral wall of the pharynx ; but on the dorsal wall 

 it stops at the high pharyngeal epithelium, which is ciliated. 



The septal glands, as seen in the living animal, appear to be 

 in three pairs, in segments iv, v and vi, on the anterior faces of 

 septa f , I and f , causing the septa to bulge backwards. The 

 examination of longitudinal sections shows that between these 

 masses are others arranged in series with them ; so that the glands 

 on each side form a connected mass of five or six lobes arranged 

 longitudinally. The glands of opposite sides are also continuous 

 in each segment dorsally to the alimentary tube. 



Salivary glands ('' peptonephridia ") are present, as coiled 

 tubes, one on each side, opening into the oesophagus close behind 

 the pharynx and extending backwards through segments iv and v. 

 They are quite conspicuous structures, and though their lumen is 

 intracellular they have a maximum diameter of as much as i8/w. 

 The oesophagus continues narrow to segment xii, and the tube 

 widens slightly in xiii to form the intestine. 



