536 Prof. Mcintosh's Notes from the 



Anteriorly the dorsal median process hears long papilla? 

 with globular or clavate tips, which give it a characteristic 

 fringe under a lens, and on each side is the long pale bristle- 

 tuft which proceeds forward and very slightly outward and 

 upward, the tips having a ventral curvature. They are 

 finely iridescent, gleaming with a greenish-blue sheen like 

 the long bristles of Mitraria. When mounted in Farrant's 

 solution they are brownish by transmitted light, have short 

 articulations at the base, but the greater part of the free 

 portion in each has long joints. They taper to a fine point, 

 show T a distinct curvature, and are somewhat stiff. They 

 form an even row or palisade in the tissues, with reserve 

 bristles developing at the base, and make a regular vertical 

 fan-like series internally. The ventral bristles are only a 

 little shorter, the regularly arranged fan being directed 

 slightly outward and forward, the lower bristles having a 

 ventral direction, and the tips curve inward. The angle 

 these bristles make with the body is variable, according to 

 the condition of the basal muscles on immersion in spirit. 

 The bristles of the second foot — which is fused with the first 

 in forming the lateral projection on each side anteriorly — are 

 much shorter and more slender than the first, indeed the 

 dorsal do not appear to be half the length, and the ventral 

 are still shorter. Their direction is also forward and slightly 

 outward and their structure is the same, viz., long, tapering, 

 jointed bristles. The bristles o£ the third foot leave the body 

 at a different angle — projecting more directly outward and 

 slightly forward. The dorsal series has the same structure, 

 but the ventral differ, for they are long, jointed, flattened, 

 nearly of equal diameter throughout, though really slightly 

 increasing from the base to the end of the shaft, which is a 

 little dilated and curved forward. The tip consists of a 

 gradually diminishing flattened process, ending in a well- 

 marked hook (PI. XII. a. fig. 1), the whole structure being 

 more conspicuous in situ than the slender tapering dorsal 

 bristles. 



The posterior hooks are short and knife-shaped with a 

 marked curve at the tip (PI. XII. a. fig. 2), and have oblique 

 striae throughout. 



Another species, which may provisionally be termed Slyla- 

 rioides sarsii, was dredged in the ' Porcupine ' Expedition of 

 1870 off Cape Sag-res in 45 fathoms, on July 28th, amidst 

 what was termed a southern fauna. It somewhat resembles 

 Stylarioides plumosa, but has a shorter auterior region, fewer 

 segments, more velvety surface, and stiffer dorsal bristles, the 



