Gaily Marine Lahuralonj^ Si. Audreios. ] ] 7 



secretion. The anterior region is alj.sent. The anal funnel 

 rises abruptly i'roiu a l}road ring at the base find presents a 

 series of long eirri seven in number, alternating with two or 

 three shorter ones, the lai'gest and broadest (so that it is 

 .strap-shaped) being mid-ventral. Another peculiarity is the 

 presence to the lelt ot the segment next the tunnel of a short, 

 lateral and j)roportionally thick cirrus, whilst on the right 

 are two shorter processes, one opposite the former and 

 another a little behind it somewhat longer. The latter 

 separated during the examination. 



Another fragmentary form liad no lateral cirri in front of 

 the funnel, which had a shorter strap-shaped mid-ventral 

 cirrus and about the same number of longer cirri alternating 

 with the shorter. 



So far as could be observed, the bristles (PL II. fig. 2) 

 agreed with those of P. pratermissa in being smooth. The 

 hooks, though smaller, are similar to those of the common 

 s^jccies, with a high crown of six teeth above the great fang 

 and a gular tuft of bristles close beneath. 



Two fragments, viz. a funnel and a segment of a form — 

 apparently a Euclymtne (A) — or forms unknown, were 

 dredged in the ' Porcupine ' Expedition of 1869 in 370 fathoms 

 in muddy sand oft" Ireland. The funnel, which may belong 

 to a (liferent form from the other fragment, has thirty-four 

 cirri, that opposite the vertical ridge being about douljle the 

 length of the others. All are conical flattened cirri. The 

 rim is only slightly wider than the base, and no constriction 

 occurs in the middle. The basal rim from which the funnel 

 arises is sloped, and a single unarmed segment is attached to 

 it. The sepai-ate segment has bristles and hooks. The 

 latter (PI. II. fig. 3j have moderately long curved shafts, 

 increasing in diameter from the base to the shoulder, then 

 narrowing at the neck, which increases in breadth distally, 

 and with a somewhat high crown which has six teeth behind 

 the great ifang. The latter makes less than a right angle 

 with the neck, and a curved gap (concavity) with a slight 

 eminence exists between it and the origin of tlie gular bristles, 

 much less, however, than in the hook of Isocirrus D. 



The bristles are strong and straight, with tapered tips and 

 narrow wings. Beyond the wings in some is a flattened 

 region, ending in the delicately tapered tip. The more 

 slender forms do not show traces of wings. 



Heterodymene ? AB. 



A beautifully formed anal funnel, with only a fragment 



