49 



(Challenger Annel. PI. VII, fig. 7). The long golden-brown dorsal bristles pierce the grey dorsal 

 feit as in Aphrodite aculeata, but the iridescent lateral bristles of this species are absent; the 

 dorsal bristles are directed backward, but they do not quite reach to the median dorsal line. 

 In the posterior half of the ventral side (PI. XI, fig. 2) the intersegmental grooves have a 

 sinuous course, as also appears to occur in Aphroditella obtecta (Florida-Anneliden, PI. VI, 

 fig. 2). The ventral bristles are shorter than the dorsal ones; their distal part is faintly S-like 

 curved and densely pilose over a short region at some distance from the hook, much resem- 

 bling the ventral bristles of the Florida-species (PI. XI, fig. 3). They are arranged in three 

 groups of different length : two dorsal ones that are the longest; a median group of three, that 

 measure three-quart of the length of the dorsal ones and an inferior group of four, that are 

 shorter than the median ones. The ventral cirrus, tapering distally, extends beyond the extre- 

 mity of the neuropodium. The head is rounded, nearly as long as broad. Two black eyes 

 are situated on the lateral side of the anterior part of the head and therefore have a position 

 quite different from that in the other species ; the anterior of them are the largest (PI. XI, 

 fig. i). The facial tubercle is large, pear-shaped, tuberculate. The tentacle is slender, cylindri- 

 cal, nearly as long as the head. The palps are not very long; bent backward they extend to 

 the sixth segment. Of the tentacular cirri the dorsal one measures two thirds of the length 

 of the palps ; the ventral one is a third shorter than the dorsal one. 



2. Aphroditella liviosa Horst. PI. XI, figs. 4 — 7. 



Horst, Zool. Mededeel. R. Museum Nat. Historie, Leiden, vol. II, 1916, p. 68. 



Stat. 17S. 2^40' Lat. S., 128° 37.5 Long. E. North off Ceram. Depth 835 M. i specimen. 



The body is oval, long 27 mm., broad 18 mm.; it consists of about 30 segments. 



The whole dorsum is covered with mud, containing foraminifera-shells, annelid-tubes etc, 

 hiding all the parts of the animal except the ventral bristles and the palps. The ventral side, 

 attenuated posteriorly, is den.sely covered with small papillae. The ventral bristles (PI. XI, 

 figs 5 and 6) have their distal part faintly S-Hke curved, terminating in an acute tip and pro- 

 vided along the underside with a villous beard ; as usually they are arranged in three rows. 

 The dorsal bristles are represented by a fascicle of fine, smooth, faintly curved setae, that lie 

 totally embedded in the dorsal feit and terminate in a vitreous, hook-shaped tip, directed 

 towards the median dorsal line (PI. XI, fig. 7). The ventral cirrus is nearly as long as the 

 neuropodium, with an oval dilated tip. The head (PI. XI, fig. 4) is oval with its broadest part 

 directed anteriorl)- ; it possesses two rather large, globular eye-peduncles, without pigment. The 

 tentacle is short and very slender, not quite as long as the head ; a narrow, keel-shaped, 

 facial tubercle, covered with papillae and somewhat longer than the head, lies enclosed between 

 the base of the palps. The palps are rather long, slender and tapering distally, beset with 

 spinous papillae. Of the tentacular cirri the dorsal one measures two thirds of the length 

 of the palps ; the ventral one is shorter. This specimen could not be identified with any one 

 of the species already described; it somewhat resembles Aphrod. obtecta Ehl., from the coast 

 of Florida. 



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