3« 



The examples ranged from i^ to 5 inches and in life the 

 latter probably reached 7 or 8 inches. 



The dull bluish iridescent head is shield-shaped, with the 

 broad end posterior. Two eyes occur on each side posteriorly, 

 the anterior being wider apart. A small cuticular lens is in the 

 middle of each. The tentacles are stout and subulate. The 

 palpi are massive organs with bulbous terminal processes. The 

 dull brownish tentacular cirri are of moderate length, and the 

 dorsal of the second pair is longest as in ordinary Nereids. 



The bodv is slightly tapered in front, then dilates to its widest 

 region and again diminishes gradually to the tail which ends in 

 two cirri of moderate length below the anus. The dorsum in 

 the preparations has a dull bluish iridescence, which Schmarda 

 states (presumably in life) is greenish blue, and the ventral sur- 

 face is yellowish brown. The sides are flanked by the feet with 

 their amber-coloured bristles. 



The proboscis (Plate I, figs. 6 and 7) in the majority of the 

 examples is extruded, having distally a pair of powerful maxilla? 

 which, in the old examples, have their teeth abraded, but in the 

 younger forms show four or five distinct teeth in each. Dorsally 

 (Plate I. fig. 6) a group of paragnathi lies a little behind each 

 maxilla, and they are arranged in short lines, the longest being 

 posterior. In the median line between these is a single larger 

 tooth. On the ventral aspect of the maxilla? on each side is a 

 group of paragnathi similar in si/,e to the dorsal, but arranged 

 m four oblique posterior rows, and an irregular anterior series 

 (Plate I. fig. 7). A little posterior to these in the middle line is 

 another group consisting of three curved rows and one or two 

 points in front. A double belt of larger paragnathi occurs 

 ventrally at the base of the proboscis (in extension), ending at 

 each side in a single row, while dorsally the arrangement is 

 continued by a transversely elongated and bluntly conical tooth 

 on each side, and a single isolated tooth in the centre. The 

 organ is symmetrically cut by lines into various areas so that it 

 has a '' quilted " aspect. 



The first foot is typical of the Nereids, having a somewhat 

 blunt and subulate dorsal cirrus, an ovate superior lobe, a trun- 

 cated setigerous region with two black spines beneath, a smaller 

 ovate ventral lobe extending beyond the former, and a lanceolate 

 ventral cirrus. The setigerous region is supported by a single 

 black spine which in lateral view separates the dark amber- 

 coloured bristles into two groups. The upper consists of about 

 three with long but stout tapering tips having spmous edges and 

 two with the shorter falcate tip. The inferior group conforms 

 to the latter type. 



In its progress backward a tendency to a lamellar expansion 

 of the base of the dorsal cirrus appears. Thus at the 20th foot 



