336 HAKMOTHOE HALIAETI. 



the horns of certain antelopes, such as Hippotragus oryx. One of the larger bristles is 

 represented in Plate XXXVIII, fig. 24. The ventral series again forms a dense tuft of 

 fine and by no means long bristles, commencing superiorly with a group of about three, 

 with elongate spinous regions, tapering to an acutely pointed simple tip. The adjacent 

 series has also long, slender, spinous regions, but the tips are bifid, the part which is 

 usually hooked having scarcely a trace of a curve, and the secondary process being 

 closely applied (Plate XXXVIII, fig. 25). The tips become shorter and stouter 

 inferiorly, and the secondary process more apparent. Though a slight curve is present 

 the tip is scarcely hooked (Plate XXXVIII, fig. 26, representing one of the stoutest 

 forms). The upper third of the spinous region is even narrower than the bifid part 

 behind the hook at the tip, a peculiarity seldom seen. Inferiorly the simple tips as well 

 as the bristles themselves become shorter. 



Posteriorly (in the last feet) both dorsal and ventral bristles become much more 

 slender as well as smaller. The dorsal, however, show even in the least developed the 

 well-marked spinous rows. The ventral bristles have long and finely tapered spinous 

 regions and simple tips. 



The dorsal bristles are often loaded with parasitic growths, one of the most 

 beautiful being a handsome stalked infusorian. 



The dorsal cirri stretch beyond the bristles, and have a similar structure to the 

 median tentacle. The ventral cirri are rather slender and elongate, with a filiform tip. 



Reproduction. — All that can be said about the reproduction of the species is that in 

 an example procured in early autumn (August) numerous ripe eggs occurred between 

 the feet and on the dorsum under the scales. Though the body was ruptured it is 

 probable these escaped, at least in some cases, naturally. A ripe form also was dredged 

 in the Minch in July. 



This species approaches Evarne, but a glance at the head and the arrangement of 

 the eyes at once differentiates it, while the structure of the scales and the characters of 

 the dorsal and ventral bristles still further emphasise the distinctions. The Polynoe 

 spinifera of Ehlers is a closely allied form, but the anterior pair of eyes, if the figure is to 

 be trusted, quite differ, since they are visible from the dorsum. The details of the bristles 

 are not given. In the same way, while admitting the relationship between the species 

 and Evarne as above mentioned, I do not think with my esteemed colleague, Prof. 

 Marion, for the reasons indicated, that it should be placed in that genus. It is true that 

 in the French naturalist's figure the anterior pair of eyes are dorsal, but such was not 

 the case in the examples observed here. The character of the spinous rows of the 

 dorsal bristles differs from that of either Evarne impar or E. Johnstoni. 



6. Harmothoe Haliaeti, Mcintosh, 1876. 



Specific Characters. — No complete example has yet been found. The dorsal bristles 

 are rather long, slender, and slightly curved, with conspicuous rows of spines, and a very 

 short, bare portion at the tip. The ventral bristles have slightly hooked tips, and the 

 secondary process is either straight or bends outward a little at the tip. The ventral 



