166 Prof. Mcintosh's Xotes from the 



unusually long. The bristles are proportionally longer than 

 in C. setosa, and their bases have a deep brown tinge. 



Besides the foregoing, two fragmentary examples ( x ) 

 apparently agreeing with C. setosa occur, but as only the 

 anterior region is present in each, there is doubt. The 

 snout in one is acutely conical, whereas in the other it is 

 retracted into a blunt cone, and reddish-brown pigment 

 marks the origin of each capillary bristle-bundle, both 

 dorsally and ventrally. 



Ch(stozone carpenteri *. 



The anterior region of a form presenting characteristic 

 features was dredged in the ' Porcupine ' Expedition of 

 1870 in Bono Bay, on the coast of Algiers, in 25 fathoms. 

 It also appeared off Cape Guardia, oflf Cape Finisterre, 

 in the same Expedition. It is a somewhat larger and 

 more rounded form and does not show the dorsal and 

 A'entral grooves of C. setosa. The snout (PL VI. fig. 5) is 

 somewhat longer than in the common form and in one has 

 a dark speck on each side at the posterior border of the 

 prostomium, and these specks are best seen on the ventral 

 surface, or from the front ; the mouth opens on the ventral 

 surface, a short distance behind them. The body has the 

 usual fusiform shape, its largest diameter being about the 

 anterior third. The bristles, which stretch from each side 

 with an upward and backward curve, are proportionally 

 longer than in C. setosa. They commence as considerable 

 tufts in the first foot, the slightly yellow shaft being con- 

 stricted about the level of the skin, and then the tip flattens 

 out more in the shorter and less in the long forms, and 

 finally tapers to a long hair-like curved extremity. The 

 broader blades (PI. VI. fig. 5 a) readily split in this region 

 so as to make a brush-like appearance, the direction being 

 downward and backward. The most characteristic feature, 

 however, is the appearance about the tenth foot of crotchets 

 in the dorsal and then in the ventral division (PL VI. 

 fig. 5 Z>). In this foot (tenth) the bristles have attained 

 great length, the dorsal being considerably longer than the 

 ventral, the slight constriction below the long flattened blade 

 being noteworthy, as well as the length of the attenuate tip. 

 Those injured shoAV the brush-like fractures already alluded 

 to. The shorter forms have stouter shafts, and by a little 

 modification the crotchets (PL VI. fig. 5 c), which are still 



* Ntamed after the late Dr. "\V. B. Carpenter. 



