HAKMOTHOE ZBTLANDIOA. 331 



Body elongate and somewhat narrow, consisting of about thirty-five bristle-bearing 

 segments. The segments dorsally present no peculiarity, while inferiorly the depressed 

 median region proceeds from the buccal fold to the tail. The segmental papillae seem 

 hardly to project beyond the elevation. The body is of a pale or dull straw-colour, the 

 translucent scales showing only a few pale touches. Posteriorly the anus projects on a 

 median process. 



Proboscis. — The extruded organ presents nine papillee along each edge, and the teeth 

 are pale brown. 



Scales (Plate XXXII, fig. 15). — The species was formerly stated to have fourteen pairs 

 of scales, but a re-examination of the broken specimens points to the probability that fifteen 

 pairs are present. They cover the dorsum, are rather thin, translucent, and soft, and 

 seem to be smooth under a lens ; but under a high power short clavate papilla occur 

 sparsely along the outer and posterior border, and over the usual area externally. The 

 papillae along the outer and posterior border are not to be confounded with the 

 appearances found in the granular area of the epiderm. They are much more minute 

 than those of allied species. Only a microscopic papilla here and there on the 

 same border projects beyond the smooth outline. The first pair are small and round, 

 the size increasing posteriorly to the twelfth, when a diminution again occurs in those 

 behind. Only a few show a slightly reniform outline, the majority being more or less 

 ovoid. 



Feet. — The first foot shows bristles of the dorsal type. 



In the second foot the dorsal bristles are curved, and have well-marked spinous 

 rows. The ventral bristles, again, differ from the typical forms in the proportionally 

 longer and more finely spinous regions, and in the simple tip, which is but little hooked. 



The third foot has more or less become typical, except that the ventral bristles are 

 more slender. 



The typical foot (Plate XXX, fig. 2) presents dorsally a series of divergent, stout, 

 sharp-pointed, and brittle bristles, with well-marked transverse spinous rows. The 

 spinous region has a distinct curve. The smooth portion at the tip is of considerable 

 length, has a slight bend, and tapers gently to the point (Plate XXXVIII, fig. 20, and 

 front view, Plate XXXVIII, fig. 20 a). The ventral bristles (Plate XXXVIII, fig. 21) 

 have superiorly a short spinous part of five or six rows, and a smooth terminal region 

 which forms a well-marked hook. The secondary process is remarkably long, and passes 

 straight outward parallel with the former, and in the upper bristles reaches as far as the 

 terminal hook. 



In the terminal feet the dorsal bristles alter little, except that they become smaller 

 and the spinous rows more prominent. The ventral bristles, again, have shorter shafts 

 and much more slender and elongate spinous regions and simple tips. 



The bristles throughout are pale yellowish, and the dorsal are often loaded with 

 algoid and other parasitic growths. 



The dorsal cirri, like the tentacular cirri, taper from base to apex, which is filiform, 

 and reaches the extremity of the ventral bristles (in spirit). Their surface has sparsely 

 distributed short clavate cilia. The ventral cirri are tumid above the basal region, then 

 taper to the extremity, and have a few clavate cilia. 



