640 Memoirs of the Indian Museum. [Vol. V, 



segments are very long. The thoracic glands open to the exterior by minutes pores 

 near the setae, the abdominal glands between the dorsal and ventral setae. In 

 Owenia there are 6 or 7 pairs of glands in the anterior segments, those of the third 

 thoracic segment being sometimes small or absent. In Myriochele heeri, according to 

 Hansen (1882, pp. 41, 42), there is a pair of glands in each of the long segments, and he 

 shows 14 such segments (torn, cit.' T. vi, fig. 6). Fauvel (1914, p. 264) says that in 

 M. heeri there is a pair of glands in each segment. Mcintosh (1885, p. 410) refers a 

 form dredged in 2975 fathoms, east of the Antilles, to the same species. The great 

 depth at which it was taken, the large size of the specimens, and the fact that both 

 extremities were missing when Mcintosh examined the material, make the identifica- 

 tion more than doubtful. Mcintosh quotes the statement of Dr. v. Willimoes- 

 Suhm, who examined the specimens when they were captured, that " there is a pair 

 of glands in each of the segments, from the second to the seventh." This agrees 

 more closely with the present form, in which they occur in segments 2-6. 



The Psammocollus australis of Grube (1867, p. 30) from St. Paul, appears to differ 

 from the present species, so far as one can tell from the rather imperfect description 

 and figures, in a few points, such as the size, position of the thoracic setae, shape of 

 the hooks, which have only a single hook at the tip, and the larger number of. capil- 

 lary setae per bundle. Glands were observed to accompany the first and three follow- 

 ing girdles of hooks, that is to say, in the four anterior abdominal segments. 



Habitat. — This species was found on 6 occasions, in the southern part of the 

 lake, between Kalidai I. and Rambha. Five occasions were during the salt-water 

 season and one during the freshwater period, but the specific gravity of the water 

 only varied between 1 005-1 01. The specimens were taken on a muddy bottom, in 

 a fine-meshed net attached to the trawl. 



Family CAPITEUJDAE. 



Heteromastus similis, sp. nov. 



(Plate XXIX-, figs. 23A-23H.) 



In addition to two very small specimens, one complete individual and a number 

 of fragments are available for study. The description is drawn up from the complete 

 individual (the type specimen). It is 55 mm. long, composed of 212 segments. Some 

 of the other fragments apparently belong to rather larger individuals, and as no trace 

 of sexual products was found, the mature individual is doubtless larger still. The 

 body is long and slender, swollen at the anterior end, and tapering very gradually to 

 the tail. In the preserved specimens the thoracic segments are pale buff colour, the 

 abdominal segments greyish brown with a tinge of purple. 



The head (fig. 23A) is small and pear-shaped, consisting of a wide basal part and 

 a much narrower tip. It usually projects freely, but may be partly contracted 

 beneath the anterior border of the peristomium. No eyes were observed. The basal 

 part of the proboscis is thin-walled, and is covered regularly with mammillate 

 papillae. The walls are full of clear oval réfringent bodies. The anterior five seg- 



