POLYCH^TA. 255 



* 



basal portions, such as occurs in the next species. The body is incomplete behind, 

 upwards of fifty segments being preserved ; total width of anterior region 6 millims. 

 The specimen is well preserved. 



Panthalis nigroinaculata, Grube Plate I., figs. 28 to 32. 

 (Grube, 'Ann. Semp.,' 1878, p. 50.) 



Locality : Station II., North of Negombo, 9 fathoms. One specimen. 



Antennae arising from the frontal margin of the prostomium ; the tentaculum impar 

 of about the same length, from the occipital margin. Only one pair of eyes observed 

 on the slightly protuberant lateral borders. Palps short and stout, the anterior half 

 densely fimbriate. Dorsal cirri short, ventral cirri subarticulate at tip. Each foot 

 (after the first few pairs) is provided with a silk-producing gland which is apt to 

 remain iu the body after the extraction of the parapodium, the silken strands being 

 drawn through the orifice of the notopodium. 



The anterior elytra are inversely imbricate, inserted upon the elytrophores near 

 the posterior border ; the third elytra touch in the middle line behind the head 

 (Plate I., figs. 28 to 31). The elytra were observed on segments II., IV., V., VII. 

 and all subsequent odd segments up to XXXI., after which the body was quite 

 flaccid and collapsed, full of the gold-coloured glistening silken coils and firmly 

 attached to the tube at the posterior end. 



The anterior portion of the tube was mostly free from the body of the worm, 

 thougb slightly connected therewith by loose silken strands. The elytra are sub- 

 translucent, colourless. The extruded proboscis carries a crown of marginal papillae, 

 eleven above, thirteen below ; the median dorsal papilla is barely larger than the 

 others. The setae differ from those of P. melanonotus considerably. The dorsal 

 group of setae in the ventral ramus consists of small spinulose setae, the spinules 

 arranged in three remote whorls, below which the seta is slightly dilated ; next a few 

 fringed setae ; then the strong aristate setae in two groups above and below the 

 acicula ; finally the ventral group of spinose setae (Plate I., fig. 32). There are no 

 penicillate setae. 



Length of anterior portion, including the proboscis, 13 millims. ; width about 

 3 millims. Length of the posterior flaccid portion about 13 millims. 



Family : SIGALIONID.E. 

 Psammolyce zeylanica, n. sp. Plates I. and II., figs. 33 to 43. 



Locality : Ceylon Seas. One specimen, incomplete. 



A fragment comprising about thirty setigerous segments, length 17 millims., body 

 width 5 millims., 8 millims. over the setae. The dorsum is completely encrusted with 

 fine particles, chiefly calcareous debris, leaving the setae exposed at the sides. The 

 elytra are thin, transparent and triangular, the base of the triangle directed forwards. 

 The basal area is clear, but the hinder area bears a luxurious growth of club-shaped 



